302 Hinkle Chapter 21: Respiratory Care Modalities PrepU

The nurse is caring for a client being weaned from a mechanical ventilator. Which findings would require the weaning process to be terminated?

blood pressure increases 20 mmHg from baseline In collaboration with the primary provider, the nurse would terminate the weaning process if adverse reactions occur, including a *heart rate increase of 20 beats/min, systolic blood pressure increase of 20 mm Hg, a decrease in oxygen saturation to less than 90%, respiratory rate less than 8 or greater than 20 breaths/min, ventricular dysrhythmias, fatigue, panic, cyanosis, erratic or labored breathing, and paradoxical chest movement*. A vital capacity of 10 to 15 mL/kg, maximum inspiratory pressure (MIP) at least -20 cm H2O, tidal volume of 7 to -9 mL/kg, minute ventilation of 6 L/min, and a rapid/shallow breathing index below 100 breaths/min/L; PaO2 greater than 60 mm Hg with FiO2 less than 40% are criteria that indicate a client is ready to be weaned from the ventilator. A normal vital capacity is 10 to 15 mL/kg.

Which type of oxygen therapy includes the administration of oxygen at pressure greater than atmospheric pressure?

hyperbaric Hyperbaric oxygen therapy is the administration of oxygen at pressures greater than atmospheric pressure. As a result, the amount of oxygen dissolved in plasma is increased, which increases oxygen levels in the tissues. Low-flow systems contribute partially to the inspired gas the client breathes, which means that the client breathes some room air along with the oxygen. High-flow systems are indicated for clients who require a constant and precise amount of oxygen. During transtracheal oxygenation, clients achieve adequate oxygenation at lower rates, making this method less expensive and more efficient.

A home health nurse is visiting a home care client with advanced lung cancer. Upon assessing the client, the nurse discovers wheezing, bradycardia, and a respiratory rate of 10 breaths/minute. These signs are associated with which condition?

hypoxia As the respiratory center in the brain becomes depressed, hypoxia occurs, producing wheezing, bradycardia, and a decreased respiratory rate. Delirium is a state of mental confusion characterized by disorientation to time and place. Hyperventilation (respiratory rate greater than that metabolically necessary for gas exchange) is marked by an increased respiratory rate or tidal volume, or both. Semiconsciousness is a state of impaired consciousness characterized by limited motor and verbal responses and decreased orientation.

The nurse is assisting a client with postural drainage. Which of the following demonstrates correct implementation of this technique?

instruct the client to remain in each position of the postural drainage sequence for 10-15 minutes Postural drainage is usually performed two to four times daily, before meals (to prevent nausea, vomiting, and aspiration) and at bedtime. Prescribed bronchodilators, water, or saline may be nebulized and inhaled before postural drainage to dilate the bronchioles, reduce bronchospasm, decrease the thickness of mucus and sputum, and combat edema of the bronchial walls. The nurse instructs the client to remain in each position for 10 to 15 minutes and to breathe in slowly through the nose and out slowly through pursed lips to help keep the airways open so that secretions can drain while in each position. If the sputum is foul-smelling, it is important to perform postural drainage in a room away from other patients or family members. (Deodorizers may be used to counteract the odor. Because aerosol sprays can cause bronchospasm and irritation, they should be used sparingly and with caution.)

A client with myasthenia gravis is receiving continuous mechanical ventilation. When the high-pressure alarm on the ventilator sounds, what should the nurse do?

suction the client's artificial airway A high-pressure alarm on a continuous mechanical ventilator indicates an obstruction in the flow of gas from the machine to the client. The nurse should suction the client's artificial airway to remove respiratory secretions that could be causing the obstruction. The sounding of a ventilator alarm has no relationship to the apical pulse. Increasing the oxygen percentage and ventilating with a handheld mechanical ventilator wouldn't correct the airflow blockage.

A patient with COPD requires oxygen administration. What method of delivery does the nurse know would be best for this patient?

venturi mask The Venturi mask is the most reliable and accurate method for delivering precise concentrations of oxygen way that allows a constant flow of room air blended with a fixed flow of oxygen. It is used primarily for patients with COPD because it can accurately provide appropriate levels of supplemental oxygen, thus avoiding the risk of suppressing the hypoxic drive.

A client is being mechanically ventilated in the ICU. The ventilator alarms begin to sound. The nurse should complete which action first?

troubleshoot to identify the malfunction The nurse should first immediately attempt to identify and correct the problem; if the problem cannot be identified and/or corrected, the client must be manually ventilated with an Ambu bag. The respiratory therapist may be notified, but this is not the first action by the nurse. The nurse should not reposition the endotracheal tube as a first response to an alarm.

When performing endotracheal suctioning, the nurse applies suctioning while withdrawing and gently rotating the catheter 360 degrees for how long?

10-15 seconds In general, the nurse should apply suction no longer than 10 to 15 seconds. Applying suction for 20-25 or 30-35 seconds is hazardous and may result in the development of hypoxia, which can lead to dysrhythmias and, ultimately, cardiac arrest. Applying suction for 0-5 seconds would provide too little time for effective suctioning of secretions.

A client is postoperative and prescribed an incentive spirometer (IS). The nurse instructs the client to:

expect coughing when using the spirometer properly When using an incentive spirometer, the client should be sitting or in the semi-Fowler's position. The client is to inhale, hold the breath for about 3 seconds, and then exhale slowly. Coughing occurs with the use of the incentive spirometer and is encouraged. The client should use the spirometer 10 times every hour while awake.

The nurse is caring for a client with an endotracheal tube (ET). Which nursing intervention is contraindicated?

routinely deflating the cuff Routine cuff deflation is not recommended because of the increased risk for aspiration and hypoxia. The cuff is deflated before the ET is removed. Cuff pressures should be checked every 6 to 8 hours. Humidified oxygen should always be introduced through the tube.

A nurse observes constant bubbling in the water-seal chamber of a closed chest drainage system. What should the nurse conclude?

the system has an air leak Constant bubbling in the water-seal chamber indicates an air leak and requires immediate intervention. The client with a pneumothorax will have intermittent bubbling in the water-seal chamber. Clients without a pneumothorax should have no evidence of bubbling in the chamber. If the tube is obstructed, the fluid would stop fluctuating in the water-seal chamber.

Which type of ventilator has a preset volume of air to be delivered with each inspiration?

volume-controlled With volume-controlled ventilation, the volume of air to be delivered with each inspiration is preset. Negative-pressure ventilators exert a negative pressure on the external chest. Time-cycled ventilators terminate or control inspiration after a preset time. When the pressure-cycled ventilator cycles on, it delivers a flow of air (inspiration) until it reaches a preset pressure, and then cycles off, and expiration occurs passively.

The nurse hears the patient's ventilator alarm sound and attempts to find the cause. What is the priority action of the nurse when the cause of the alarm is not able to be determined?

disconnect the patient from the ventilator and manually ventilate the patient with a manual resuscitation bag until the problem is resolved If the cause of an alarm cannot be determined, the nurse should disconnect the patient from the ventilator and manually ventilate the patient, because leaving the patient on the mechanical ventilator may be dangerous.

A client with a respiratory condition is receiving oxygen therapy. While assessing the client's PaO2, the nurse knows that the therapy has been effective based on which of the following readings?

84 mmHg In general, clients with respiratory conditions are given oxygen therapy only to increase the arterial oxygen pressure (PaO2) back to the client's normal baseline, which may vary from *60 to 95 mm Hg*.

For a client with an endotracheal (ET) tube, which nursing action is the most important?

auscultation of the lungs for bilateral breath sounds For the client with an ET tube, the most important nursing action is auscultating the lungs regularly for bilateral breath sounds to ensure proper tube placement and effective oxygen delivery. Although turning the client from side to side every 2 hours, monitoring serial blood gas values every 4 hours, and providing frequent oral hygiene are appropriate actions for this client, they're secondary to ensuring adequate oxygenation.

The nurse is caring for a client in the ICU who is receiving mechanical ventilation. Which nursing measure is implemented in an effort to reduce the client's risk of developing ventilator-associated pneumonia (VAP)?

cleaning the client's mouth with chlorhexadine daily The five key elements of the VAP bundle include *elevation of the head of the bed (30 to 45 degrees [semi-Fowler's position)], daily "sedation vacations," and assessment of readiness to extubate; peptic ulcer disease prophylaxis (with histamine-2 receptor antagonists); deep venous thrombosis prophylaxis; and daily oral care with chlorhexidine (0.12% oral rinses)*. The client should be turned and repositioned every 2 hours to prevent complications of immobility and atelectasis and to optimize lung expansion.

The nurse is admitting a patient with COPD. The decrease of what substance in the blood gas analysis would indicate to the nurse that the patient is experiencing hypoxemia?

PaO2 Hypoxemic hypoxia, or hypoxemia, is a decreased oxygen level in the blood (PaO2) resulting in decreased oxygen diffusion into the tissues.

Which statements would be considered appropriate interventions for a client with an endotracheal tube? Select all that apply.

The cuff is deflated before the tube is removed. Cuff pressures should be checked every 6 to 8 hours. Humidified oxygen should always be introduced through the tube. The cuff is deflated before the endotracheal tube is removed. Cuff pressures should be checked every 6 to 8 hours. And must be maintained at 15- 2 mm Hg to prevent excess pressure , High cuff pressure leads to tracheal bleeding and other complications. Humidified oxygen should always be introduced through the tube. Routine cuff deflation is not recommended because of the increased risk for aspiration and hypoxia. It is recommended to provide oral hygiene and suction the oropharynx whenever necessary, the cough , glottic, pharyngeal ,and laryngeal reflexes are suppressed and the nurse needs to keep all airways clear for the client.

Hyperbaric oxygen therapy increases the blood's capacity to carry and deliver oxygen to compromised tissues. This therapy may be used for a client with:

a compromised skin graft A client with a compromised skin graft could benefit from hyperbaric oxygen therapy because increasing oxygenation at the wound site promotes wound healing. Hyperbaric oxygen therapy isn't indicated for malignant tumors, pneumonia, or hyperthermia.

A client has a sucking stab wound to the chest. Which action should the nurse take first?

apply a dressing over the wound and tape it on three sides The nurse should immediately apply a dressing over the stab wound and tape it on three sides to allow air to escape and to prevent tension pneumothorax (which is more life-threatening than an open chest wound). Only after covering and taping the wound should the nurse draw blood for laboratory tests, assist with chest tube insertion, and start an I.V. line.

The nurse received a client from the post-anesthesia care unit (PACU) who has a chest tube to a closed drainage system. Report from the PACU nurse included drainage in the chest tube at 80 mL of bloody fluid. Fifteen minutes after transfer from the PACU, the chest tube indicates drainage as pictured. The client is reporting pain at "8" on a scale of 0 to 10. The first action of the nurse is to:

assess the pulse and blood pressure The client has bled 120 mL of bloody drainage in the chest drainage system within 15 minutes. It is most important for the nurse to assess for signs and symptoms of hemorrhage, which may be indicated by a rapid pulse and decreasing blood pressure. The nurse may then lay the client in a flat position and notify the physician.

Which ventilator mode provides full ventilatory support by delivering a present tidal volume and respiratory rate?

assist control Assist-control ventilation provides full ventilator support by delivering a preset tidal volume and respiratory rate. IMV provides a combination of mechanically assisted breaths and spontaneous breaths. SIMV delivers a preset tidal volume and number of breaths per minute. Between ventilator-delivered breaths, the patient can breathe spontaneously with no assistance from the ventilator for those extra breaths. Pressure support ventilation assists SIMV by applying a pressure plateau to the airway throughout the client-triggered inspiration to decrease resistance within the tracheal tube and ventilator tubing.

A new ICU nurse is observed by her preceptor entering a patient's room to suction the tracheostomy after performing the task 15 minutes before. What should the preceptor educate the new nurse to do to ensure that the patient needs to be suctioned?

auscultate the lung for adventitious sounds When a tracheostomy or endotracheal tube is in place, it is usually necessary to suction the patient's secretions because of the decreased effectiveness of the cough mechanism. Tracheal suctioning is performed when adventitious breath sounds are detected or whenever secretions are obviously present. Unnecessary suctioning can initiate bronchospasm and cause mechanical trauma to the tracheal mucosa.

What assessment method would the nurse use to determine the areas of the lungs that need draining?

auscultation The nurse should assess breath sounds before doing postural drainage to determine the areas that need draining. Inspection, chest X-rays, and ABG levels are all assessment parameters that give good information about respiratory function but aren't necessary to determine lung areas requiring postural drainage.

An adult client with cystic fibrosis is admitted to an acute care facility with an acute respiratory infection. The ordered respiratory treatment includes chest physiotherapy. When should the nurse perform this procedure? Select all that apply.

before meals bedtime The nurse should perform chest physiotherapy at bedtime to reduce secretions in the client's lungs during the night. It is important to perform chest physiotherapy before meals to prevent nausea, vomiting, and aspiration. Percussion and vibration, components of chest physiotherapy, may worsen bronchospasms; therefore, the procedure is contraindicated in clients with bronchospasms. Secretions that have mobilized (especially when suction equipment isn't available) are a contraindication for postural drainage, another component of chest physiotherapy.

The nurse is caring for a client following a thoracotomy. Which finding requires immediate intervention by the nurse?

chest tube drainage, 190 ml/hr The nurse should monitor and document the amount and character of drainage *every 2 hours*. The nurse must notify the primary provider if drainage is *≥150 mL/hr*. The other findings are normal following a thoracotomy and no intervention would be required.

The nurse assesses a patient with a heart rate of 42 and a blood pressure of 70/46. What type of hypoxia does the nurse determine this patient is displaying?

circulatory hypoxia Given this patient's vital signs, he appears to be in shock. Circulatory hypoxia is hypoxia resulting from inadequate capillary circulation. It may be caused by decreased cardiac output, local vascular obstruction, low-flow states such as shock, or cardiac arrest. Although tissue partial pressure of oxygen (PO2) is reduced, arterial oxygen (PaO2) remains normal. Circulatory hypoxia is corrected by identifying and treating the underlying cause.

A client is diagnosed with mild obstructive sleep apnea after having a sleep study performed. What treatment modality will be the most effective for this client?

continuous positive airway pressure (CPAP) CPAP provides positive pressure to the airways throughout the respiratory cycle. Although it can be used as an adjunct to mechanical ventilation with a cuffed endotracheal tube or tracheostomy tube to open the alveoli, it is also used with a leak-proof mask to keep alveoli open, thereby preventing respiratory failure. CPAP is the most effective treatment for obstructive sleep apnea because the positive pressure acts as a splint, keeping the upper airway and trachea open during sleep. CPAP is used for clients who can breathe independently. BiPAP is most often used for clients who require ventilatory assistance at night, such as those with severe COPD or sleep apnea.

A nurse is planning care for a client after a tracheostomy. One of the client's goals is to overcome verbal communication impairment. Which intervention should the nurse include in the care plan?

encourage the client's communication attempts by allowing him time to select or write words The nurse should allow ample time for the client to respond and shouldn't speak for him. She should use as many aids as possible to assist the client with communicating and encourage the client when he attempts to communicate. When the client is ready, the nurse can use a tracheostomy plug to facilitate speech. Making an effort to read the client's lips and answering questions for the client are inappropriate.

The nurse is educating a patient with COPD about the technique for performing pursed-lip breathing. What does the nurse inform the patient is the importance of using this technique?

it prolongs exhalation The goal of pursed-lip breathing is to prolong exhalation and increase airway pressure during expiration, thus reducing the amount of trapped air and the amount of airway resistance.

For a client who has a chest tube connected to a closed water-seal drainage system, the nurse should include which action in the care plan?

managing and documenting the drainage in the collection chamber The nurse should regularly measure and document the amount of chest tube drainage to detect abnormal drainage patterns, such as may occur with a hemorrhage (if excessive) or a blockage (if decreased). Continuous bubbling in the water-seal chamber indicates a leak in the closed chest drainage system, which must be corrected. The nurse should keep the collection chamber below chest level to allow fluids to drain into it. The nurse shouldn't strip chest tubes because doing so may traumatize the tissue or dislodge the tube.

A client with chronic obstructive pulmonary disease (COPD) is intubated and placed on continuous mechanical ventilation. Which equipment is most important for the nurse to keep at this client's bedside?

manual resuscitation bag The client with COPD depends on mechanical ventilation for adequate tissue oxygenation. The nurse must keep a manual resuscitation bag at the bedside to ventilate and oxygenate the client in case the mechanical ventilator malfunctions. Because the client doesn't have chest tubes or a tracheostomy, keeping a water-seal chest drainage set-up or a tracheostomy cleaning kit at the bedside isn't necessary. Although the nurse may keep an oxygen analyzer (pulse oximeter) on hand to evaluate the effectiveness of ventilation, this equipment is less important than the manual resuscitation bag.

A client abruptly sits up in bed, reports having difficulty breathing and has an arterial oxygen saturation of 88%. Which oxygen delivery method would give the greatest level of inspired oxygen?

nonrebreather mask A nonrebreather mask can deliver levels of the fraction of inspired oxygen (FIO2) as high as 100%. Other modes — simple mask, face tent, and nasal cannula — deliver lower levels of FIO2.

Which oxygen administration device has the advantage of providing a high oxygen concentration?

nonrebreathing mask Nonrebreathing masks provide high oxygen concentrations but usually fit poorly. A Venturi mask provides low levels of supplemental oxygen. A catheter is an inexpensive device that provides a variable fraction of inspired oxygen and may cause gastric distention. A face tent provides a fairly accurate fraction of inspired oxygen but is bulky and uncomfortable. It would not be the device of choice to provide a high oxygen concentration.

A client has been receiving 100% oxygen therapy by way of a nonrebreather mask for several days. Now the client complains of tingling in the fingers and shortness of breath, is extremely restless, and describes a pain beneath the breastbone. What should the nurse suspect?

oxygen toxicity Oxygen toxicity may occur when too high a concentration of oxygen (greater than 50%) is administered for an extended period (longer than 48 hours) (Urden, Stacy, & Lough, 2014). Signs and symptoms of oxygen toxicity include substernal discomfort, paresthesias, dyspnea, restlessness, fatigue, malaise, progressive respiratory difficulty, refractory hypoxemia, alveolar atelectasis, and alveolar infiltrates evident on chest x-rays.

A client is receiving supplemental oxygen. When determining the effectiveness of oxygen therapy, which arterial blood gas value is most important?

partial pressure of arterial oxygen (paO2) The most significant and direct indicator of the *effectiveness of oxygen therapy is the PaO2 value*. Based on the PaO2 value, the nurse may adjust the type of oxygen delivery (cannula, Venturi mask, or mechanical ventilator), flow rate, and oxygen percentage. The other options reflect the client's ventilation status, not oxygenation. The pH, HCO3-, and PaCO2

A nurse is caring for a client with a chest tube. If the chest drainage system is accidentally disconnected, what should the nurse plan to do?

place the end of the chest tube in a container of sterile saline If a chest drainage system is disconnected, the nurse may place the end of the chest tube in a container of sterile saline or water to prevent air from entering the chest tube, thereby preventing negative respiratory pressure. The nurse should apply an occlusive dressing if the chest tube is pulled out — not if the system is disconnected. The nurse shouldn't clamp the chest tube because clamping increases the risk of tension pneumothorax. The nurse should tape the chest tube securely to prevent it from being disconnected, rather than taping it after it has been disconnected.

A nurse is caring for a client who was intubated because of respiratory failure. The client is now receiving mechanical ventilation with a preset tidal volume and number of breaths each minute. The client has the ability to breathe spontaneously between the ventilator breaths with no ventilator assistance. The nurse should document the ventilator setting as:

synchronized intermittent mandatoruy ventilation (SIMV) In SIMV mode, the ventilator delivers a preset number of breaths at a preset tidal volume. The client can breathe on his own in between the breaths delivered by the ventilator. In PSV, a pressure plateau is added to the ventilator to prevent the airway pressure from falling beneath a preset level. In AC ventilation, the ventilator delivers a preset number of breaths at a preset tidal volume and any breaths that the client takes on his own are assisted by the ventilator so they reach the preset tidal volume. In CPAP, the ventilator provides only positive airway pressure; it doesn't provide any breaths to the client.

The nurse suctions a patient through the endotracheal tube for 20 seconds and observes dysrhythmias on the monitor. What does the nurse determine is occurring with the patient?

the patient is hypoxic from suctioning Apply suction while withdrawing and gently rotating the catheter 360 degrees (no longer than 10-15 seconds). Prolonged suctioning may result in hypoxia and dysrhythmias, leading to cardiac arrest.

A client in acute respiratory distress is brought to the emergency department. After endotracheal (ET) intubation and initiation of mechanical ventilation, the client is transferred to the intensive care unit. Before suctioning the ET tube, the nurse hyperventilates and hyperoxygenates the client. What is the rationale for these interventions?

they help prevent cardiac dysrhythmias ET suctioning removes oxygen, lowering the partial pressure of arterial oxygen; this, in turn, may induce a cardiac arrhythmia. Hyperventilating and hyperoxygenating the client before and during (or after) suctioning helps prevent this complication. Subcutaneous emphysema occurs when air from the pleural cavity leaks into subcutaneous tissue; it isn't a complication associated with suctioning. Hyperventilation and hyperoxygenation can't prevent a pneumothorax because this condition itself indicates air in the pleural space. Pulmonary edema is associated with cardiac dysfunction, not ET suctioning.

Which is the most reliable and accurate method for delivering precise concentrations of oxygen through noninvasive means?

venturi mask The Venturi mask is the most reliable and accurate method for delivering a precise concentration of oxygen through noninvasive means. The mask is constructed in a way that allows a constant flow of room air blended with a fixed flow of oxygen. Nasal cannula, T-piece, and partial-rebreathing masks are not the most reliable and accurate methods of oxygen administration.

The nurse is preparing to perform chest physiotherapy (CPT) on a client. Which statement by the client tells the nurse that the procedure is contraindicated.

"I just finished my lunch, I am ready for my CPT now" When performing CPT, the nurse ensures that the client is comfortable, is not wearing restrictive clothing, and has not just eaten. The nurse gives medication for pain, as prescribed, before percussion and vibration, splints any incision, and provides pillows for support, as needed. A goal of CPT is for the client to be able to mobilize secretions; the client who has an unproductive cough is a candidate for CPT.

The nurse is preparing to assist the health care provider to remove a client's chest tube. Which instruction will the nurse correctly give to the client?

"When the tube is being removed, take a deep breath, exhale, and bear down" When assisting in removal of a chest tube, instruct the client to perform a gentle Valsalva maneuver or to breathe quietly. The chest tube is then clamped and quickly removed. Simultaneously, a small bandage is applied and made airtight with petrolatum gauze covered by a 4 × 4-inch gauze pad and thoroughly covered and sealed with nonporous tape. The other options are incorrect instructions for the client.

A nurse is teaching a client about using an incentive spirometer. Which statement by the nurse is correct?

"before you do the exercise, I will give you pain medication if you need it" The nurse should assess the client's pain level before the client does incentive spirometry exercises and administer pain medication as needed. Doing so helps the client take deeper breaths and help prevents atelectasis. The client should breathe in slowly and steadily, and hold his breath for 3 seconds after inhalation. The client should start doing incentive spirometry immediately after surgery and aim to do 10 incentive spirometry breaths every hour.

The nurse has instructed a client on how to perform pursed-lip breathing. The nurse recognizes the purpose of this type of breathing is to accomplish which result?

Improve oxygen transport; induce a slow, deep breathing pattern; and assist the client to control breathing Pursed-lip breathing, which improves oxygen transport, helps induce a slow, deep breathing pattern and assists the client to control breathing, even during periods of stress. This type of breathing helps prevent airway collapse secondary to loss of lung elasticity in emphysema.

The nurse is teaching a postoperative client who had a coronary artery bypass graft about using the incentive spirometer. The nurse instructs the client to perform the exercise in the following order:

Sit in an upright position. Place the mouthpiece of the spirometer in the mouth. Breathe air in through the mouth. Hold breath for about 3 seconds. Exhale air slowly through the mouth. The nurse instructs the client, when using the incentive spirometer, the proper use of it. First, the client is to sit in an upright position. The client is then to place the mouthpiece of the spirometer in the client's mouth. Next, the client breathes air in through the mouth. This causes the incentive spirometer to be activated. The client holds his breath for about 3 seconds. Then, the client exhales slowly through the mouth.

A client is prescribed postural drainage because secretions are accumulating in the upper lobes of the lungs. The nurse instructs the client to:

Take prescribed albuterol (Ventolin) before performing postural drainage. When a client is to perform postural drainage, the nurse should instruct the client to use the prescribed bronchodilator (e.g., albuterol) first. This will open airways and promote drainage. The client is to perform postural drainage before meals, not after. This will aid in preventing nausea, vomiting, and aspiration. For secretions accumulated in the upper lobes, the client will sit up or even lean forward while sitting. Head on a pillow is not a sufficient increase in height. The client is also to lay in each position for 10 to 15 minutes.

A client who must begin oxygen therapy asks the nurse why this treatment is necessary? What would the nurse identify as the goals of oxygen therapy? Select all that apply.

To provide adequate transport of oxygen in the blood To decrease the work of breathing To reduce stress on the myocardium Oxygen therapy is designed to provide adequate transport of oxygen in the blood while decreasing the work of breathing and reducing stress on the myocardium. Incentive spirometry is a respiratory modality that provides visual feedback to encourage the client to inhale slowly and deeply to maximize lung inflation and prevent or reduce atelectasis. A mini-nebulizer is used to help clear secretions.

A client is on a positive-pressure ventilator with a synchronized intermittent mandatory ventilation (SIMV) setting. The ventilator is set for 8 breaths per minute. The client is taking 6 breaths per minute independently. The nurse

continues assessing the client's respiratory status frequently The SIMV setting on a ventilator allows the client to breathe spontaneously with no assistance from the ventilator for those extra breaths. Data in the stem suggest that the ventilator is working correctly. The nurse would continue making frequent respiratory assessments of the client. There are not sufficient data to suggest the client could be removed from the ventilator. There is no reason to increase the ventilator's setting to 14 breaths per minute or to contact respiratory therapy to report the machine is not working properly.

A patient is being educated in the use of incentive spirometry prior to having a surgical procedure. What should the nurse be sure to include in the education?

encourage the patient to take approximately at least 10 breaths per hour, while awake The patient should be instructed to perform the procedure approximately 10 times in succession, repeating the 10 breaths with the spirometer each hour during waking hours. The patient should assume a semi-Fowler's position or an upright position before initiating therapy, not be supine. Coughing during and after each session is encouraged, not discouraged. The patient should Splint the incision when coughing postoperatively. The patient should still use the spirometer when in pain.

A client suffers acute respiratory distress syndrome as a consequence of shock. The client's condition deteriorates rapidly, and endotracheal (ET) intubation and mechanical ventilation are initiated. When the high-pressure alarm on the mechanical ventilator sounds, the nurse starts to check for the cause. Which condition triggers the high-pressure alarm?

kinking over the ventilator tubing Conditions that trigger the high-pressure alarm include kinking of the ventilator tubing, bronchospasm, pulmonary embolus, mucus plugging, water in the tube, and coughing or biting on the ET tube. The alarm may also be triggered when the client's breathing is out of rhythm with the ventilator. A disconnected ventilator circuit or an ET cuff leak would trigger the low-pressure alarm. Changing the oxygen concentration without resetting the oxygen level alarm would trigger the oxygen alarm, not the high-pressure alarm.

The nurse is caring for a client who is scheduled for a lobectomy. Following the procedure, the nurse will plan care based on the client

returning to the nursing unit with two chest tubes The nurse should plan for the client to return to the nursing unit with two chest tubes intact. During a lobectomy, the lobe is removed, and the remaining lobes of the lung are re-expanded. Usually, two chest catheters are inserted for drainage. The upper tube is for air removal; the lower one is for fluid drainage. Sometimes only one catheter is needed. The chest tube is connected to a chest drainage apparatus for several days.

A nurse is weaning a client from mechanical ventilation. Which nursing assessment finding indicates the weaning process should be stopped?

runs of ventricular tachycardia Ventricular tachycardia indicates that the client isn't tolerating the weaning process. The weaning process should be stopped before lethal ventricular arrhythmias occur. A respiratory rate of 16 breaths/minute and an oxygen saturation of 93% are normal findings. The client's blood pressure remains stable, so the weaning can continue.

After lobectomy for lung cancer, a client receives a chest tube connected to a disposable chest drainage system. The nurse observes that the drainage system is functioning correctly when she notes tidal movements or fluctuations in which compartment of the system as the client breathes?

water seal chamber Fluctuations in the water-seal compartment are called tidal movements and indicate normal function of the system as the pressure in the tubing changes with the client's respirations. The air-leak meter — not chamber — detects air leaking from the pleural space. The collection chamber connects the chest tube from the client to the system. Drainage from the tube drains into and collects in a series of calibrated columns in this chamber. The suction control chamber provides the suction, which can be controlled to provide negative pressure to the chest.

Which is a potential complication of a low pressure in the endotracheal tube cuff?

aspiration pneumonia Low pressure in the cuff can increase the risk for aspiration pneumonia. High pressure in the cuff can cause tracheal bleeding, ischemia, and pressure necrosis.

A nurse is caring for a client with COPD who needs teaching on pursed-lip breathing. Place the steps in order in which the nurse will instruct the client.

"inhale through your nose" "count to 3" "exhale through pursed lips" "count to 7" Pursed-lip breathing is a technique used to prolong exhalation by propping the airways open and promoting the removal of trapped air and carbon dioxide. The nurse should instruct the client to first inhale through the nose to a slow count of 3. Next, the client should exhale slowly through pursed lips for a count of 7.

A client has been placed on a ventilator, and the spouse begins to cry during the initial visit. What is the best therapeutic statement for the nurse to communicate?

"tell me what you are feeling" The best option is to have the spouse verbalize feelings. The other statements are not therapeutic because teaching should not be done while the spouse is crying. People on a ventilator may experience pain. The best treatment statement minimizes what the spouse is experiencing and does not encourage communication.

A client is on a ventilator. Alarms are sounding, indicating an increase in peak airway pressure. The nurse assesses first for

a kink in the ventilator tubing One event that could cause the ventilator's peak-airway-pressure alarm to sound is a kink in the ventilator tubing. After making this and other assessments without correction, then it could be a malfunction of the alarm button. Higher than normal endotracheal cuff pressure could cause client tissue damage but would not make the ventilator alarms sound. A cut or slice in the tubing from the ventilator would result in decreased pressure.

A client is recovering from thoracic surgery needed to perform a right lower lobectomy. Which of the following is the most likely postoperative nursing intervention?

encourage coughing to mobilize secretions The client is encouraged to cough frequently to mobilize secretions. The client will be placed in the semi-Fowler's position. The chest tube is always attached to closed, sealed drainage to re-expand lung tissue and prevent pneumothorax. Restricting IV fluids in a client who is NPO while recovering from surgery would lead to dehydration.

A nurse is caring for a client who has a tracheostomy and temperature of 103° F (39.4° C). Which intervention will most likely lower the client's arterial blood oxygen saturation?

endotracheal suctioning Endotracheal suctioning removes secretions as well as gases from the airway and lowers the arterial oxygen saturation (SaO2) level. Coughing and using an incentive spirometer improve oxygenation and should raise or maintain oxygen saturation. Because of superficial vasoconstriction, using a cooling blanket can lower peripheral oxygen saturation readings, but SaO2 levels wouldn't be affected.

The nurse should monitor a client receiving mechanical ventilation for which of the following complications?

gastrointestinal hemorrhage Gastrointestinal hemorrhage occurs in approximately 25% of clients receiving prolonged mechanical ventilation. Other possible complications include incorrect ventilation, oxygen toxicity, fluid imbalance, decreased cardiac output, pneumothorax, infection, and atelectasis. Immunosuppression and pulmonary emboli are not direct consequences of mechanical ventilation.

Which ventilator mode provides a combination of mechanically assisted breaths and spontaneous breaths?

intermediate mandatory ventilation (IMV) IMV provides a combination of mechanically assisted breaths and spontaneous breaths. Assist-control ventilation provides full ventilator support by delivering a preset tidal volume and respiratory rate. SIMV delivers a preset tidal volume and number of breaths per minute. Between ventilator-delivered breaths, the client can breathe spontaneously with no assistance from the ventilator for those extra breaths. Pressure support ventilation assists SIMV by applying a pressure plateau to the airway throughout the client-triggered inspiration to decrease resistance within the tracheal tube and ventilator tubing.

The nurse is assisting a physician with an endotracheal intubation for a client in respiratory failure. It is most important for the nurse to assess for:

symmetry of the client's chest expansion Immediately after intubation, the nurse should check for symmetry of chest expansion. This is one finding that indicates successful endotracheal placement. The tracheal cuff pressure is set between 15 and 20 mm Hg. Routine deflation of the tracheal cuff is not recommended, because the client could then aspirate secretions during the period of deflation. Warm, high, humidified air is administered through the endotracheal tube.

After undergoing a left thoracotomy, a client has a chest tube in place. When caring for this client, the nurse must:

encourage coughing and deep breathing When caring for a client who's recovering from a thoracotomy, the nurse should encourage coughing and deep breathing to prevent pneumonia. Fluctuations in the water-seal chamber are normal. Clamping the chest tube could cause a tension pneumothorax. Chest tube milking is controversial and should be done only to remove blood clots that obstruct the flow of drainage.