A 32-year-old male patient sustains 78% TBSA burn and is currently admitted to the burn unit. Which sequential order would the nurse arrange the events involved in burn shock following a patient's exposure to burns?

Decreased blood volume

Increased Increased vascular permeability

peripheral resistance

Development of edema

Answer and Explanation

The Correct Answer is A,B,D,C

A. Decreased blood volume: Burn injuries can lead to fluid loss, primarily through damaged skin. This fluid loss causes a decrease in blood volume, leading to hypovolemia. Hypovolemia contributes to decreased cardiac output and tissue perfusion.
B. Increased vascular permeability: Burn injuries cause an inflammatory response, leading to increased vascular permeability. This increased permeability allows fluid, electrolytes, and proteins to leak from the intravascular space into the interstitial space.
C. Development of edema: The increased vascular permeability and fluid leakage lead to the development of edema. Edema occurs as fluid accumulates in the interstitial spaces, further contributing to tissue swelling and compromised perfusion.
D. Increased peripheral resistance: In response to decreased blood volume and tissue hypoperfusion, the body activates compensatory mechanisms to maintain blood pressure and tissue perfusion. One of these mechanisms is increased peripheral resistance, which occurs as blood vessels constrict to maintain blood pressure. Increased peripheral resistance helps redirect blood flow to vital organs but also contributes to increased workload on the heart.
Therefore, the correct sequential order of events involved in burn shock following a patient's exposure to burns is:
A. Decreased blood volume B. Increased vascular permeability D. Development of edema C. Increased peripheral resistance

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Correct Answer is B

Explanation

Lactate is a by-product of anaerobic metabolism that accumulates when there is insufficient oxygen supply to meet cellular metabolic demands. In the context of severe tissue hypoxia, such as in septic shock, the body may resort to anaerobic metabolism, leading to increased lactate production and elevated lactate levels in the blood.
Elevated lactate levels, typically above 4.0 mmol/L, are indicative of tissue hypoxia and inadequate oxygenation at the cellular level. Higher lactate levels, such as 9.0 mmol/L, suggest more severe tissue hypoxia and increased anaerobic metabolism.
A. Partial thromboplastin time (PTT) 64 seconds in (option A) is incorrect because: PTT is a laboratory test that evaluates the intrinsic pathway of the coagulation cascade. While coagulation abnormalities may occur in septic shock, PTT alone does not specifically indicate severe tissue hypoxia.
C. Potassium 2.8 mEq/L (2.8 mmol/L) (option C) is incorrect because Low potassium levels (hypokalemia) can be a concern in septic shock, but it does not directly indicate severe tissue hypoxia.
D. PaCO2 58 mm Hg in (option D) is incorrect because: PaCO2 refers to the partial pressure of carbon dioxide in arterial blood and is a measure of the respiratory status. While an elevated PaCO2 can be a sign of respiratory acidosis, it is not specific to severe tissue hypoxia.
Therefore, in a critically ill patient with septic shock, an elevated lactate level, such as 9.0 mmol/L, indicates severe tissue hypoxia and inadequate oxygenation at the cellular level

A. 18 Ml B. 5480 Ml C. 6,480 mL D. 4234 mL

Correct Answer is C

Explanation

Heart rate: 72 beats per minute Stroke volume: 90 mL/contraction

Cardiac output = Heart rate × Stroke volume

Cardiac output = 72 beats/minute × 90 mL/contraction

To simplify the calculation, you can convert the units:

72 beats/minute × 90 mL/contraction = (72 × 90) beats/minute × mL/contraction

Now, perform the multiplication:

72 × 90 = 6,480

Therefore, the cardiac output is 6,480 mL per minute.

The correct answer is:

C. 6,480 mL

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A 32-year-old male patient sustains 78% TBSA burn and is currently admitted to the burn unit. Which sequential order would the nurse arrange the events involved in burn shock following a patient's exposure to burns?

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Naxlex Comprehensive Predictor Exams

How does the emergency department nurse caring for a critically ill with septic shock recognize that severe tissue hypoxia is present?

Correct Answer is B

Explanation

What is the cardiac output of a patient whose heart rate is 72 beats per minute with a stroke volume of 90 mL/contraction?

Correct Answer is C

Explanation

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