Thermoregulation Tes Wood: Lewis Ch. 69/Concept 9

When assessing an older patient admitted to the emergency department (ED) with a broken arm and facial bruises, the nurse observes several additional bruises in various stages of healing. Which statement or question by the nurse is most appropriate? a. "Do you feel safe in your home?" b. "You should not return to your home." c. "Would you like to see a social worker?" d. "I need to report my concerns to the police."

ANS: A The nurse's initial response should be to further assess the patient's situation. Telling the patient not to return home may be an option once further assessment is done. A social worker may be appropriate once further assessment is completed

When preparing to cool a patient who is to begin therapeutic hypothermia, which intervention will the nurse plan to do (select all that apply)? a. Assist with endotracheal intubation. b. Insert an indwelling urinary catheter. c. Begin continuous cardiac monitoring. d. Obtain an order to restrain the patient. e. Prepare to give sympathomimetic drugs.

ANS: A, B, C Cooling can produce dysrhythmias, so the patient's heart rhythm should be continuously monitored and dysrhythmias treated if necessary. Bladder catheterization and endotracheal intubation are needed during cooling. Sympathomimetic drugs tend to stimulate the heart and increase the risk for fatal dysrhythmias such as ventricular fibrillation. Patients receiving therapeutic hypothermia are comatose or do not follow commands so restraints are not indicated

The nursery nurse identifies a newborn at significant risk for hypothermic alteration in thermoregulation because the patient is a. large for gestational age. b. low birth weight. c. born at term. d. well nourished.

ANS: B Low birth weight and poorly nourished infants (particularly premature infants) and children are at greatest risk for hypothermia. A large for gestational age infant would not be malnourished. An infant born at term is not considered at significant risk. A well nourished infant is not at significant risk.

Strategies to include in a community program for senior citizens related to dealing with cold winter temperatures would include a. avoiding hot beverages. b. shopping at an indoor mall. c. using a fan at low speed. d. walking slowly in the park.

ANS: B Shopping indoors where there is protection from the elements and temperature control is one strategy to avoid cold temperatures. Hot beverages can help an individual deal with cold weather. Avoiding breezes and air currents is recommended to conserve body temperature. Physical activity can increase body temperature, and if the senior is going to walk in the park, weather-appropriate (warm) clothing and a usual or brisk pace, not a slow pace, would be recommended.

The most appropriate measure for a nurse to use in assessing core body temperature when there are suspected problems with thermoregulation is a(n) a. oral thermometer. b. rectal thermometer. c. temporal thermometer scan. d. tympanic membrane sensor.

ANS: B The most reliable means available for assessing core temperature is a rectal temperature, which is considered the standard of practice. An oral temperature is a common measure but not the most reliable. A temporal thermometer scan has some limitations and is not the standard. The tympanic membrane sensor could be used as a second source for temperature assessment.

A patient is admitted to the emergency department (ED) after falling through the ice while ice skating. Which assessment will the nurse obtain first? a. Heart rate b. Breath sounds c. Body temperature d. Level of consciousness

ANS: B The priority assessment relates to ABCs (airway, breathing, circulation) and how well the patient is oxygenating, so breath sounds should be assessed first. The other data will also be collected rapidly but are not as essential as the breath sounds

A 22-year-old patient who experienced a near drowning accident in a local pool, but now is awake and breathing spontaneously, is admitted for observation. Which assessment will be most important for the nurse to take during the observation period? a. Auscultate heart sounds. b. Palpate peripheral pulses. c. Auscultate breath sounds. d. Check pupil reaction to light.

ANS: C Because pulmonary edema is a common complication after near drowning, the nurse should assess the breath sounds frequently. The other information also will be obtained by the nurse, but it is not as pertinent to the patient's admission diagnosis

A patient with hypotension and an elevated temperature after working outside on a hot day is treated in the emergency department (ED). The nurse determines that discharge teaching has been effective when the patient makes which statement? a. "I will take salt tablets when I work outdoors in the summer." b. "I should take acetaminophen (Tylenol) if I start to feel too warm." c. "I should drink sports drinks when working outside in hot weather." d. "I will move to a cool environment if I notice that I am feeling confused."

ANS: C Electrolyte solutions such as sports drinks help replace fluid and electrolytes lost when exercising in hot weather. Salt tablets are not recommended because of the risks of gastric irritation and hypernatremia. Antipyretic medications are not effective in lowering body temperature elevations caused by excessive exposure to heat. A patient who is confused is likely to have more severe hyperthermia and will be unable to remember to take appropriate action

During orientation to an emergency department, the nurse educator would be concerned if the new nurse listed which of the following as a risk factor for impaired thermoregulation? a. Impaired cognition b. Occupational exposure c. Physical agility d. Temperature extremes

ANS: C Physical agility is not a risk factor for impaired thermoregulation. The nurse educator would use this information to plan additional teaching to include medical conditions and gait disturbance as risk factors for hypothermia, because their bodies have a reduced ability to generate heat. Impaired cognition is a risk factor. Recreational or occupational exposure is a risk factor. Temperature extremes are risk factors for impaired thermoregulation.

The nurse admitting a patient to the emergency department on a very hot summer day would suspect hyperthermia when the patient demonstrates a. decreased respirations. b. low pulse rate. c. red, sweaty skin. d. slow capillary refill.

ANS: C With hyperthermia, vasodilatation occurs causing the skin to appear flushed and warm or hot to touch. There is an increased respiration rate with hyperthermia. The heart rate increases with hyperthermia. With hypothermia there is slow capillary refill.

The emergency department (ED) nurse is initiating therapeutic hypothermia in a patient who has been resuscitated after a cardiac arrest. Which actions in the hypothermia protocol can be delegated to an experienced licensed practical/vocational nurse (LPN/LVN) (select all that apply)? a. Continuously monitor heart rhythm. b. Check neurologic status every 2 hours. c. Place cooling blankets above and below patient. d. Give acetaminophen (Tylenol) 650 mg per nasogastric tube. e. Insert rectal temperature probe and attach to cooling blanket control panel.

ANS: C, D, E Experienced LPN/LVNs have the education and scope of practice to implement hypothermia measures (e.g., cooling blanket, temperature probe) and administer medications under the supervision of a registered nurse (RN). Assessment of neurologic status and monitoring the heart rhythm require RN-level education and scope of practice and should be done by the RN.

When rewarming a patient who arrived in the emergency department (ED) with a temperature of 87° F (30.6° C), which assessment indicates that the nurse should discontinue active rewarming? a. The patient begins to shiver. b. The BP decreases to 86/42 mm Hg. c. The patient develops atrial fibrillation. d. The core temperature is 94° F (34.4° C).

ANS: D A core temperature of 89.6° F to 93.2° F (32° C to 34° C) indicates that sufficient rewarming has occurred. Dysrhythmias, hypotension, and shivering may occur during rewarming and should be treated but are not an indication to stop rewarming the patient

The nurse planning care for a patient with hypothermia would consider knowledge of similar exemplars including a. heat exhaustion. b. heat stroke. c. infection. d. prematurity.

ANS: D Prematurity, frost bite, environmental exposure, and brain injury are considered exemplars of hypothermia. Heat exhaustion is an exemplar of hyperthermia. Heat stroke is an exemplar of hyperthermia. Infection is an exemplar of hyperthermia.

A volunteer at the senior center asks the visiting nurse why the senior citizens always seem to be complaining about temperatures. The nurse's best response is that older people have a diminished ability to regulate body temperature because of a. active sweat glands. b. increased circulation. c. peripheral vasoconstriction. d. slower metabolic rates.

ANS: D Slower metabolic rates are one factor that reduces the ability of older adults to regulate temperature and be comfortable when there are any temperature changes. As the body ages, the sweat glands decrease in number and efficiency. Older adults have reduced circulation. The body conserves heat through peripheral vasoconstriction, and older adults have a decreased vasoconstrictive response, which impacts ability to respond to temperature changes.

The priority nursing intervention for a patient suspected to be hypothermic would be to a. assess vital signs. b. hydrate with intravenous (IV) fluids. c. provide a warm blanket. d. remove wet clothes.

ANS: D The first thing to do with a patient suspected to be hypothermic is to remove wet clothes, because heat loss is five times greater when clothing is wet. Assessing vital signs is important, but the wet clothes should be removed first. Hydration is very important with hyperthermia and the associated danger of dehydration, but there is not a similar risk with hypothermia. A warm blanket over wet clothes would not be an effective warming strategy.