In a post-surgical unit, the nurse cares for many patients experiencing pain. Which situation is likely to lower a patient’s pain threshold?

A patient who is awaiting biopsy results.

A patient who is anxious.

A patient who is having difficulty sleeping in the hospital setting.

It is the same for all patients who have had surgery.

Answer and Explanation

The Correct Answer is B

Choice A rationale:

Awaiting biopsy results can certainly cause anxiety and stress, but it doesn't directly impact the physiological mechanisms that modulate pain perception.

While a patient awaiting biopsy results may be more attentive to their bodily sensations, including pain, the anxiety itself is not the primary driver of a lowered pain threshold.

It's important to address the patient's concerns and provide emotional support, but this alone may not be sufficient to manage pain effectively if anxiety is not the primary factor.

Choice B rationale:

Anxiety activates the sympathetic nervous system, which triggers the "fight-or-flight" response. This cascade of physiological changes includes:

Increased heart rate and blood pressure Muscle tension

Dilated pupils

Heightened awareness of bodily sensations

These physiological changes can amplify pain signals and lower the pain threshold, meaning that a person who is anxious may perceive pain more intensely than someone who is calm and relaxed.

This is because anxiety can reduce the effectiveness of the body's natural pain-inhibiting mechanisms, such as the release of endorphins and serotonin.

Choice C rationale:

Difficulty sleeping can also contribute to pain, but its effect on pain threshold is less direct than that of anxiety. Sleep deprivation can lead to:

Increased irritability Decreased pain tolerance Impaired cognitive function

These factors can make it more difficult to cope with pain, but they don't directly lower the threshold at which pain signals are perceived.

Choice D rationale:

Pain threshold varies among individuals due to a variety of factors, including: Genetics

Past experiences with pain Psychological factors Cultural beliefs

Coping mechanisms

It is incorrect to assume that all patients who have had surgery will have the same pain threshold.

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Correct Answer is C

Explanation

Choice A rationale:

Irreversible shock is the final stage of shock, where the body's compensatory mechanisms have failed, and damage to vital organs is irreversible. This stage is characterized by:

Profound hypotension (systolic blood pressure persistently below 60 mmHg) Severely altered mental status (unresponsiveness or coma)

Widespread organ failure (kidney failure, liver failure, respiratory failure) Lack of response to aggressive fluid resuscitation and vasopressor therapy

The patient in the question does not exhibit all of these signs and symptoms, particularly the profound hypotension and irreversible organ failure. Therefore, irreversible shock is not the most likely stage.

Choice B rationale:

End-organ dysfunction is a stage of shock where inadequate tissue perfusion has begun to cause damage to vital organs. This stage is characterized by:

Hypotension that may respond to fluid resuscitation

Signs of organ dysfunction, such as decreased urine output, altered mental status, or respiratory distress

The patient in the question does have some signs of organ dysfunction, such as confusion and crackles on lung auscultation. However, the hypotension is not as severe as typically seen in end-organ dysfunction shock, and there is no mention of other organ dysfunction like decreased urine output. Therefore, end-organ dysfunction is not the most likely stage.

Choice C rationale:

Early reversible shock is the initial stage of shock, where the body's compensatory mechanisms are still able to maintain blood pressure and organ perfusion. This stage is characterized by:

Mild to moderate hypotension Tachycardia

Cool, clammy skin Narrowed pulse pressure Restlessness or anxiety

The patient in the question presents with all of these signs and symptoms, making early reversible shock the most likely stage.

Choice D rationale:

Preshock is a state of impending shock, where the body's compensatory mechanisms are activated but not yet fully effective. This stage is characterized by:

Normal or slightly low blood pressure Tachycardia

Cool, clammy skin Restlessness or anxiety

The patient in the question has hypotension, which is not consistent with preshock. Therefore, preshock is not the correct stage.

A. Temperature control for either hypothermia or hyperthermia. B. Administration of cardiotonic agents such as dopamine, dobutamine, or norepinephrine. C. Administration of a thrombolytic (streptokinase). D. Subcutaneous administration of epinephrine (1:1000) 0.5 to 1 ml every 5 to 15 minutes. E. Blood cultures from all suspected sources before administration of antibiotics. F. Vigorous intravenous fluid resuscitation with 0.9% sodium chloride.

Correct Answer is ["A","B","E","F"]

Explanation

Choice A rationale:

Temperature control for either hypothermia or hyperthermia is crucial in septic shock management. Here's a detailed explanation:

Hypothermia:

Mechanism: Septic shock often causes impaired thermoregulation, leading to hypothermia. It can worsen shock by decreasing cardiac output, impairing coagulation, and promoting vasoconstriction.

Intervention: Active warming measures are essential, including: External warming devices (e.g., blankets, forced air warmers) Intravenous fluids warmed to 39-42°C

Warmed humidified oxygen

Minimizing exposure and covering the patient Hyperthermia:

Mechanism: Sepsis can trigger an excessive inflammatory response, leading to hyperthermia. It can exacerbate tissue injury, increase metabolic demands, and worsen organ dysfunction.

Intervention: Aggressive measures to lower temperature are necessary, including:

Antipyretic medications (e.g., acetaminophen, ibuprofen) External cooling methods (e.g., cooling blankets, ice packs) Sedation if shivering occurs

Choice B rationale:

Administration of cardiotonic agents such as dopamine, dobutamine, or norepinephrine is often required in septic shock to: Improve cardiac output: These agents increase myocardial contractility and heart rate, enhancing blood flow to vital organs.

Maintain blood pressure: They support vasoconstriction, counteracting the widespread vasodilation characteristic of septic shock.

Improve tissue perfusion: By optimizing cardiac output and blood pressure, they help ensure adequate oxygen and nutrient delivery to tissues.

Choice E rationale:

Blood cultures from all suspected sources before administration of antibiotics are essential for guiding appropriate antibiotic therapy.

Early identification of the causative organism: This information is crucial for selecting the most effective antibiotic regimen.

Prevention of antibiotic resistance: Judicious use of antibiotics based on culture results helps prevent the development of antibiotic-resistant bacteria.

Choice F rationale:

Vigorous intravenous fluid resuscitation with 0.9% sodium chloride is a cornerstone of septic shock management.

Replenishing intravascular volume: Septic shock often causes profound intravascular volume depletion due to capillary leak and vasodilation. Fluid resuscitation aims to restore circulating volume and maintain organ perfusion.

Improving hemodynamic stability: By increasing preload and cardiac output, fluids help stabilize blood pressure and support vital organ function.

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In a post-surgical unit, the nurse cares for many patients experiencing pain. Which situation is likely to lower a patient’s pain threshold?

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Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

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Correct Answer is ["A","B","E","F"]

Explanation

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