TMC exam 2 (4th semester)
Which of the following concerns are relevant when preparing for helicopter transport of an adult patient? I. administering appropriate sedation II. calculating oxygen cylinder duration III. selecting lightweight and easily portable ventilators IV. appropriate heated humidification
I. administering appropriate sedation II. calculating oxygen cylinder duration III. selecting lightweight and easily portable ventilators
theophylline
Bronchodilator( for neonates w apnea & desating)
A 14 kg (30 lb) child with croup is treated with 0.25 mL of 2.25% racemic epinephrine by aerosol mask. The respiratory therapist notes a decrease in stridor after the treatment. Breath sounds are diminished bilaterally and the SpO2 has decreased from 99% to 95%. Which of the following should the therapist do first? I. Repeat the treatment II. Notify the physician that the patients condition is worsening III. Perform endotracheal intubation IV. Recommend a tracheotomy
I. Repeat the treatment II. Notify the physician that the patients condition is worsening
nitrogen washout
-measures anatomic dead space ( air sits and is not taking part in the exchange of gases) -FRC pneumothoarx
nitric oxide
-pulmonary hypertension -vasodilators
continue treatment if doesnt exceed
15 bpm
An adult patient is receiving volume-controlled ventilation. The patient?s peak airway pressure is 35 cm H2Oand the plateau pressure is 25 cm H2O. The respiratory therapist would recommend the high pressure alarm be set at:
45 cm H2O
An adult patient with ARDS has been receiving mechanical ventilation for 2 weeks and is being considered for weaning. Nitric oxide therapy is in use at a concentration of 10 ppm. The patient?s PVR has changed from 290 dynes?s?cm-5 and the PaO2 is 90 torr with an FIO2 of 0.50. The nitric oxide concentration should be changed to :
5 ppm
A patient requiring continuous oxygen a 3 L/min wants to maintain a very active lifestyle. Which of the following would be the best oxygen delivery system for the respiratory therapist to recommend?
A liquid system
The respiratory therapist has received a report for a patient in the ICU who recently had a myocardial infarction. The patient has a history of COPD and congestive heart failure. Which of the following should the therapist monitor? I. SpO2 II. ECG III. Respiratory quotient IV. Intake and output
I. SpO2 II. ECG IV. Intake and output
When reviewing the chart of a newly admitted patient, the respiratory therapist finds the patient has COPD and a 70-pack-year smoking history. The patient was admitted for dyspnea. The patient is unresponsive and has a BP of 180/100 mm Hg and a respiratory rate of 40/min. Which of the following available data should the therapist review next?
PaCO2
The respiratory therapist is assisting the physician with an endotracheal intubation. The therapist auscultates the chest for proper placement of the artificial airway. The therapist notes breath sounds are markedly decreased on the left side of the chest. Which of the following actions is most appropriate at this time?
Reposition the endotracheal tube
A patient who is a victim of a residential fire is brought to the emergency department (ED) and is receiving oxygen by nasal cannula 8 L/min. The SpO2 is 100%. Arterail blood gas results are as follows: pH 7.30 paCO2 30 torr PaO2 200 torr HCO3 14 mEq/L BE -11.0 mEq/L SaO2 78% Hb 14.5 g/dL The respiratory therapist should adjust the FIO2 and change the mode of administration to:
a nonrebreathing mask at 15 L/min
A 36-year-old female was in a motor vehicle crash and sustained a flail chest injury. She is receiving mechanical ventilation. Auscultation reveals clear, but slightly diminished breath sounds. The patient develops worsening tachycardia and shortness of breath. Breath sounds on the right side are now virtually absent. These findings are consistent with
a pneumothorax
Pulmonary compliance data were collected for a patient who is receiving mechanical ventilation: Peak pressure 50 cm H2O Plateau pressure 30 cm H2O Corrected VT (exhaled) 1.0 L The respiratory therapist enters these data in the electronic chart as follows: dynamic compliance 20 mL/cm H2O. The therapist rechecks the ventilator settings and notices a PEEP setting of 10 cm H2O was not included in the charting. The appropriate action is to
access the error-correction screen and revise the record
A patient with emphysema is receiving mechanical ventilation and has acutely begun wheezing. The patient weights 75 kg (165 lb), pulse is 95/min, and blood pressure is 110/70 mm Hg. Pertinent data are as follows: Mode SIMV FIO2 0.50 Mandatory rate 10 VT 600 mL pH 7.47 PaCO2 34 torr PaO2 46 torr HCO3 24 mEq/L BE +1 mEq/L Which of the following should the respiratory therapist recommend?
administer aerosolized albuterol
A 54.5 kg (120 lb) female has a respiratory rate of 30/min and a tidal volume of 200 mL. Her respirations dropped to 10/min and her tidal volume increased to 600 mL after a sedative was administered. Which of the following
alveolar ventilation
A respiratory therapist is using a test lung to conduct a pre-operational test of a ventilator at the following settings: Mode Assist/control FIO2 0.40 Respiratory rate 12 Flow 60 L/min VT 700 mL The exhaled tidal volume measurement is 500 mL. Which of the following actions should the therapist take?
assess the ventilator circuit for leaks
A patient presents with sudden onset of dyspnea associated with cough, sputum production, and a chest radiograph demonstrating opacification of the right lower lobe. Which of the following is most consistent with these findings?
asymmetrical chest movement
While reviewing a patient?s chart, results of a chest radiograph indicate complete opacification of the left chest with a shift of the trachea and mediastinum to the left. These findings are consistent with:
atelectasis of the left lung
Occlusion of the expiratory circuit just prior to the next ventilator delivered breath facilitates the measurement of
auto-PEEP
To assess an outcome indicator of the department?s bronchodilator QA program, the respiratory therapist should monitor the:
average length-of-stay for patients receiving bronchodilators
A patient receiving mechanical ventilation in the SIMV mode has failed numerous T-piece weaning trails. Following the last T-piece trial, the arterial blood gas results with an FIO2 of 0.40 were: pH 7.44 PaCO2 40 torr PaO2 55 torr HCO3 26 mEq/L BE +3 mEq/L SaO2 87% Which of the following should the respiratory therapist recommend?
change to CPAP ventilation
A patient with severe COPD is receiving oxygen by nasal cannula at 4 L/min. The patient is lethargic and his respirations are shallow at a rate of 20/min. The pulse oximeter is reading 94%. Which of the following should the respiratory therapist recommend?
change to a 28% air-entrainment mask
The respiratory therapist notices a patient using a tracheostomy collar with a cool aerosol at 60% oxygen is unable to bring up any secretions. The small amount of secretions the patient coughed up earlier were very thick. The therapist should assess the patient and recommend:
changing to a heated nebulizer
A patient who is ventilator-dependent has an 8 mm endotracheal tube in place. Using a standard 12 Fr catheter kit, the patient requires prolonged suctioning due to profuse, thick secretions. The respiratory therapist notes the patient develops tachycardia and the oxygen saturation decreases. The therapist should recommend using a:
closed-suction system
During an acute asthmatic attack, a patient is receiving a levalbuterol (Xopenex) treatment. The patient?s respiratory rate goes from 22/min to 14/min, heart rate from 122/min to 91/min, and wheezing has decreased. Which of the following should the respiratory therapist do?
continue the treatment
A patients blood pressure monitored through an arterial catheter is 126/78 mm Hg. The transducer is mounted on a free-standing IV pole. The bed is lowered to permit routine patient care. How will this affect the measured blood pressure
decreased systolic, decreased diastolic
A finding consistent with a non-functioning arterial catheter is
difficulty withdrawing blood
An adult patient has a diagnosis of asthma and has a chest radiograph showing hyperinflation. The patient is prescribed albuterol MDI 2 puffs and beclomethasone dipropionate (Vanceril) 2 puffs. However, his post-treatment peak flows do not increase significantly. Which of the following should the respiratory therapist recommend first?
evaluate the patients treatment technique
A patient has been in the ICU for 3 weeks receiving aggressive therapy for COPD and right heart failure. The ECG now shows flattened T-waves. To plan for future treatment, the respiratory therapist should recommend
evaluating serum electrolytes
A 1000 g neonate who is 6 hours old is receiving time-cycled, pressure-limited ventilation. The neonate shows signs of developing RDS on a chest radiograph and severe hypoxemia is noted with an FIO2 of 0.80. Which of the following should the respiratory therapist recommend be used?
exogenous surfactant
A 24-year-old patient is receiving chest physiotherapy to all segments of the right lung. The PA chest radiograph shows posterior basal right lower lobe atelectasis. In which of the following positions should the respiratory therapist place the patient for postural drainage?
face down with the head of the bed down
A patient using a transdermal nicotine patch omplains of local skin irritation and insomnia. Which of the following should the respiratory therapist first recommend?
frequently rotate the site and discontinue at night
During nasotracheal suctioning, the patient does not cough, but watery secretions are aspirated through the catheter. Which of the following should the respiratory therapist do next?
hyperextend the patients neck when passing the catheter
A patient in the ICU is receiving noninvasive positive pressure ventilation by mask with the following settings and resultant arterial blood gas values with an FIO2 of 0.28: Inspiratory positive airway pressure (IPAP)15 cm H2O Expiratory positive airway pressure (EPAP)5 cm H2O Mandatory rate 12 pH 7.30 PaCO2 55 torr PaO2 65 torr HCO3 26 mEq/L BE +1 mEq/L Which of the following should a respiratory therapist recommend to improve the patient?s ventilatory status?
increase IPAP to 20 cm H2O
A patient who is receiving mechanical ventilation using PEEP is switched to a continuous-flow CPAP system for weaning. On initial evaluation, the manometer shows negative pressure during inspiration and the patient appears agitated and uncomfortable. Which of the following actions is most appropriate?
increase system flow
During the administration of an IPPB treatment, the respiratory therapist notices the system pressure drops after inspiration is initiated. Which of the following actions will best correct this problem?
increase the flow setting
When a patient cannot increase minute ventilation, increasing mechanical dead space in the ventilator circuit will cause:
increased PaCO2
A 50-year-old patient is performing incentive spirometry following laparoscopic surgery. After 3 minutes, the patient complains of lightheadedness and of tingling in the fingers. The patient?s SpO2 increased from 96% to 99%. Which of the following should the respiratory therapist recommend for the patient?
inhaling less frequently
A patient presents in the emergency department (ED) following a motor vehicle crash. Physical assessment and chest radiograph indicate significant air and fluid in the pleural space. The FIRST action should be to:
insert a chest tube and connect to suction
The respiratory therapist is ventilating a patient with a self-inflating bag-valve resuscitation device. Following each compression, the bag refills slowly permitting no more than one breath every 10 seconds. To correct this problem, the therapist should:
inspect the intake valve for proper function
The information below was obtained from the pulmonary function report for a 40-year-old male who weighs 73 kg (161 lb) and is 177 cm (5 ft 9 in) tall: FVC 2.50 L FEV1 2.16 L FEV1/FVC 90% DLCO 50% of predicted There is no significant response to the bronchodilator. These data most strongly suggest:
interstitial fibrosis (restrictive)
A 21-year-old man arrives in the emergency department (ED) after rescue from a house fire. Physical examination reveals burns on the upper chest and face, and marked edema of the face and oropharynx. Results of an arterial blood gas sample obtained while the patient was breathing air are as follows: pH 7.55 PaCO2 26 torr PaO2 105 torr HCO3 22 mEq/L BE 0 mEq/L Which of the following should the respiratory therapist recommend?
intubate the patient
Following insertion of a central venous pressure (CVP) catheter, a chest radiograph is taken to evaluate the position of the catheter. While viewing the radiograph, the respiratory therapist notes the tip of the catheter is in the lower portion of the superior vena cava. The therapist should conclude the catheter
is in the proper position
A patient receiving mechanical ventilation has a 7 mm ID, standard high-volume, low-pressure cuffed tracheostomy tube. It has become increasingly difficult to avoid a significant cuff leak. Cuff pressure monitoring reveals values in excess of 35 cm H2O. The respiratory therapist should recommend a
larger tracheostomy tube
Which of the following chest radiographs provide the best view of the lung apex, lingual, and right middle lobe?
lordotic
A patient received a head injury in a motor vehicle crash and is 24 hours post admission. He is receiving artificial mechanical ventilation at a mandatory rate of 16 and a tidal volume is 800 mL. The patient?s current arterial blood gas results are as follows: pH 7.50 PaCO2 28 torr PaO2 90 torr HCO3 21 mEq/L BE -1 mEq/L The most appropriate recommendation for this patient is to
maintain the present settings
A patient with chronic hypercapnia is receiving home oxygen theray by nasal cannula at 2 L/min. The SpO2 is 90%. The patient should be told not to increase the flow because a higher oxygen flow
may be dangerous
A patient with chronic bronchitis is admitted to the ICU with pneumonia. The patient is producing moderate amounts of thick, yellow sputum and has tachypnea. Antibiotic and bronchial hygiene therapy are initiated. After 3 days, which of the following secretion characteristics would indicate the care is being effective?
minimal and clear
Which of the following pharmacologic agents should be recommended for a patient who is intubated, receiving mechanical ventilation, and experiencing severe pain from a flail chest?
morphine sulfate
While gathering equipment in the ICU to set up an arterial line ordered STAT, the respiratory therapist notes the noncompliant pressure tubing is in a sterile package, but the corner of the package is open. Which of the following should the therapist do?
obtain an unopened, sterile pressure tubing
A patient involved in a motor vehicle crash presents with respiratory distress. A chest radiograph confirms the presence of multiple adjacent ribs fractured on the left side. Which of the following physical findings would be expected during palpation of the chest?
paradoxical motion of the left chest
While participating in a helicopter transport, the respiratory therapist notes that it is increasingly difficult to ventilate the patient with a bag-valve resuscitation device and the SpO2 is dropping. The trachea has shifted left and there is no chest excursion on the right. Which of the following should the therapist do?
perform needle decompression
purpose of incentive spirometry to a patient after abdominal surgery, the respiratory therapist should tell the patient the procedure is performed to:
prevent areas of the lung from collapsing
A 79-year-old patient with COPD shows signs of increasing anxiety and cyanosis while receiving continuous heated aerosol therapy. The patient complains of tightness in his chest. His frequent cough produces a small amount of pink, frothy sputum. The patient most likely has:
pulmonary edema
The respiratory therapist is treating a patient with pulmonary emphysema. During the course of therapy, the patient becomes very dyspneic. The therapist should instruct the patient to perform:
pursed-lip breathing
When reviewing therapy for a home care patient who has COPD, the respiratory therapist notices every time the patient performs his daily peak flow measurement, it consistently reads 100 L/min. Which of the following is the most appropriate initial action for the therapist to take?
recheck the patient peak flow with a new peak flowmeter
A patient's tracheostomy tube is being changed due to a cuff leak. After reconnecting the ventilator to the new tube, the high pressure alarm sounds, the patient?s heart rate increases to 135/min, and he is cyanotic. Crepitus and swelling are evident around his neck and upper chest. To correct this situation, the respiratory therapist should:
reinsert the tube and attempt to manually ventilate the patient
A 26-year-old patient who weighs 80 kg (176 lb) received injuries in a motor vehicle crash. The patient was intubated with a size 6 mm endotracheal tube and is receiving volume-controlled ventilation. Three days later, the patient has clear breath sounds but is unable to tolerate weaning the mandatory rate below 8 in the SIMV mode with 15 cm H2O pressure support. The respiratory therapist should recommend
reintubating with a larger endotracheal tube
Five minutes after extubating a patient, the respiratory therapist observes marked stridor, labored breathing, intercostals retractions, and a decreasing SpO2. Aerosolized racemic epinephrine has been delivered without benefit. Which of the following should the therapist recommend at this time?
reintubation
When performing quality control on an automated blood gas analyzer, the respiratory therapist notices the pH value is more than 2 standard deviations from the control group mean. The therapist should initially:
remeasure the reference sample
A shift supervisor wishes to determine the number of patients who are to receive bronchodilator treatements during the next 8 hours. To obtain this information quickly, the supervisor could:
review the assignment list from the last shift
The respiratory therapist is assisting a surgeon performing a tracheotomy on a patient who is receiving pressure-controlled ventilation. The therapist notes increased heart rate, decreased exhaled tidal volume, and distant breath sounds over the right chest. This information is most indicative of a
right pneumothorax
The respiratory therapist is using a spring-loaded PEEP valve and notices the pressure reading on the manometer is 5 cm H2O higher than the set level. Which of the following is the probable cause?
secretions are in the valve
A patient who weighs 82 kg (180 lb) and is 178 cm (5 ft 10 in) tall is admitted to the ICU following evacuation of a subdural hematoma from a closed head trauma. The patient is intubated with a size 8.0 mm endotracheal tube and has no documented pulmonary history. Mechanical ventilation was initiated with the following settings: Mode Assist/control FIO2 0.35 Mandatory rate 8 Total rate 8 VT 800 mL PIP 35 cm H2O An arterial blood gas was obtained 30 minutes later and results are as follows: pH 7.29 PaCO2 45 torr PaO2 80 torr HCO3 21 mEq/L BE -4.5 mEq/L The physician asks for the respiratory therapist?s recommendations about changing ventilator settings. Which of the following is the best recommendation?
set the mandatory rate to 10
Which of the following would indicate a physical conditioning protocol has been effective for a patient with COPD?
the patient has increased his level-walking distance by 15%
The respiratory therapist assesses a patient receiving supplemental oxygen by a transtracheal oxygen catheter. The patient is diaphoretic, has a higher than normal respiratory rate, and appears cyanotic. Which of the following is a possible explanation?
the transtracheal catheter is obstructed by a mucous plug
A 7-day-old neonate of 28-weeks gestational age is having frequent periods of apnea with desaturation. Which of the following should the respiratory therapist recommend?
theophylline (Aminophylline)
A patient who weights 60 kg (132 lb) is sedated and receiving volume-controlled ventilation. The following information is available: FIO2 0.35 Mandatory rate 12 VT 900 mL PEEP 5 cm H2O Peak flow 50 L/min pH 7.50 PaCO2 30 torr PaO2 100 torr HCO3 23 mEq/L BE 0 mEq/L Which of the following should the respiratory therapist decrease to normalize the patient?s arterial blood gases?
tidal volume
Heliox Therapy
upper airway obstruction (asthema) reduce RAW
A patient is receiving 35% oxygen through an air-entrainment mask. Cool mist is being provided at the air-entrainment port. The FIO2 measured at the mask is 42%. Which of the following should the respiratory therapist do?
verify the integrity of the air-entrainment port
A patient weighing 70 kg (154 lb) and 173 cm (5 ft 8 in) tall is recently sedated and pharmacologically paralyzed. A chest radiograph shows bilateral basilar atelectasis but is otherwise clear. Ventilator settings are: Mode SIMV FIO2 0.50 Mandatory rate 10 VT 450 mL Arterial blood gas results are as follows: pH 7.43 PaCO2 36 torr PaO2 79 torr HCO3 23 mEq/L BE 0 mEq/L SaO2 96% Which of the following modifications should the therapist recommend to the physician?
vt 700 mL rate 10 deadspace 200 mL
opacification
white; consolidation
An erratic pulse is palpated on a patient. Which of the following should the respiratory therapist recommend to further evaluate this clinical presentation?
ECG
A patient is suspected of having an upper airway obstruction. Which of the following tests should the respiratory therapist recommend to best detect this abnormality?
Flow-volume loops
The respiratory therapist is called to the emergency department (ED) in a small community hospital. A 4-year-old child is brought to the ED following a near drowning. She is unresponsive and pale with peripheral cyanosis. Vital signs are as follows: Heart rate 48 Respiratory rate 12 with intercostals retractions Blood pressure 54/26 mm Hg Temperature 33º C (91.4º F) Which of the following should be part of the treatment of this patient? I. heated supplemental O2 II. bag-valve-mask ventilation III. vascular access IV. chest compressions
I. heated supplemental O2 II. bag-valve-mask ventilation III. vascular access IV. chest compressions
A 60-kg (132-lb.) patient is receiving volume-controlled ventilation. The respiratory therapist is asked to increase the tidal volume from 500 to 700 mL. Which of the following ventilator alarm settings should be changed? I. low exhaled tidal volume II. high pressure limit III. high minute volume IV. low respiratory rate
I. low exhaled tidal volume II. high pressure limit IV:low RR
The respiratory therapist reviews the chart of a newborn and notes a 1-minute Apgar of 2 and a 5-minute Apgar of 3. For which of the following is this newborn at increased risk? I. mental impairment II. atelectasis III. bronchiolitis IV. first month mortality
I. mental impairment IV. first month mortality
A patient presents with a history of loud snoring and daytime sleepiness. The patient is obese and has a crowded oropharynx. Which of the following should the respiratory therapist evaluate while this patient is sleeping? I. nocturnal oxygen saturation II. breathing pattern III. inspiratory stridor IV. presence of wheezing
I. nocturnal oxygen saturation II. breathing pattern
Which of the following should be monitored and documented in a medical record after a capillary blood gas sample is obtained? I. presence of air in the sample II. appearance of puncture site III. Allen?s test results IV. Capillary refill time
I. presence of air in the sample II. appearance of puncture site
While reviewing a chest radiograph, proper positioning of a flow-directed balloon-tipped catheter to obtain a mixed venous sample is confirmed when the tip is located in the: I. right pulmonary artery II. left pulmonary artery III. right ventricle IV. left ventricle
I. right pulmonary artery II. left pulmonary artery
A patient is receiving oxygen at home from a liquid oxygen reservoir at 2 L/min. The patient complains he does not feel gas coming out of the nasal cannula. Which of the following are the most likely reasons for this complaint? I. the system is delivering a low flow II. the oxygen tubing is not properly connected III. the electrical system has failed IV. there is inadequate humidification
I. the system is delivering a low flow II. the oxygen tubing is not properly connected
A patient with a size 8 mm endotracheal tube has been receiving mechanical ventilation for 2 weeks, but weaning efforts have failed. If there is no further improvement in ventilatory status within 48 hours, the patient will be sent to the OR for a tracheotomy procedure. The tracheostomy device will facilitate this patient?s care by: I. Increasing dead space II. Decreasing airways resistance III. Decreasing upper airway trauma IV. Increasing secretion clearance
II. Decreasing airways resistance IV. Increasing secretion clearance
A 70-year-old-patient on a medical ward has retained secretions due to an ineffective cough and requires nasotracheal suctioning, for which a prn order is written. The patient is receiving air and has an SpO2 of 94%. Which of the following are required to safely perform this procedure? I. Yankauer suction tip II. Supplemental oxygen III. ECG monitoring IV. A pulse oximeter
II. Supplemental oxygen III. ECG monitoring IV. A pulse oximeter
A 50-kg (110-lb) patient is receiving volume-controlled ventilation with the following settings: Mode SIMV Pressure support 10 cm H2O FIO2 1.0 Mandatory rate 12 Total rate 15 VT 650 mL PEEP 10 cm H2O Peak airway pressure 50 cm H2O SpO2 85% A chest radiograph shows diffuse bilateral infiltrates. Which of the following should the respiratory therapist recommend? I. increase the mandatory rate II. change to pressure-controlled ventilation III. change to assist/control mode IV. increase the PEEP to 15 cm H2O
II. change to pressure-controlled ventilation IV. increase the PEEP to 15 cm H2O
A patient with pulmonary edema receives furosemide (Lasix), dopamine (Intropin), and oxygen. Flattened T waves and occasional PVCs are observed on the monitor. Which of the following should the respiratory therapist initially recommend to evaluate these changes? I. end-tidal CO2 II. pulse oximetry III. echocardiogram IV. electrolyes
II. pulse oximetry' IV. electrolyes
A postoperative patient receiving incentive spirometry becomes acutely short of breath. A chest radiograph shows wedge-shaped infiltrate. These findings may be associated with I. purulent secretions II. tachypnea III. hemoptysis IV. pleuritic pain
II. tachypnea III. hemoptysis IV. pleuritic pain
An adult patient has some spontaneous respiratory efforts and is receiving volume-controlled ventilation with an FIO2 of 0.40 using a microprocessor ventilator. The source gases to the ventilator fail. According to the ventilator?s capabilities, which of the following would the respiratory therapist expect to occur? I. the high airway pressure alarm will sound II. the low oxygen alarm will sound III. the ventilator powers off IV. the safety valve will open
II. the low oxygen alarm will sound IV. the safety valve will open
Data for a patient receiving mechanical ventilation are as follows: Mode Assist/control FIO2 0.35 Mandatory rate 15 Total rate 20 VT 800 mL pH 7.57 PaCO2 25 torr PaO2 125 torr HCO3 22 mEq/L BE +1 mEq/L Which of the following should the respiratory therapist recommend FIRST? I. Set 5 cm H2O PEEP II. Change FIO2 to 0.25 III. Change mode to SIMV IV. Set mandatory rate to 10
III. Change mode to SIMV IV. Set mandatory rate to 10
The information below is obtained for a 70 kg (154 lb) postoperative patient who is receiving mechanical ventilation: Mode Assist/control FIO2 0.40 Mandatory rate 10 Total rate 16 VT 650 mL pH 7.50 PaCO2 30 torr PaO2 92 torr HCO3 23 mEq/L BE 0 mEq/L Which of the following is the most appropriate ventilator change?
Initiate SIMV mode at 10
