A nurse is triaging victims of a multiple motor-vehicle crash. The nurse assesses a client trapped under a car who is apneic and has a weak pulse at 120/min. After repositioning his upper airway, the client remains apneic. Which of the following actions should the nurse take?

Choice A: Fatigue is a manifestation that the nurse should identify as indicating the client is hypokalemic. Hypokalemia is a condition in which the blood potassium level is lower than normal, usually due to excessive loss of potassium through urine, sweat, or vomiting. Potassium is an electrolyte that is essential for nerve and muscle function, especially for the heart. Hypokalemia can cause muscle weakness, cramps, and fatigue, as well as cardiac arrhythmias and dysrhythmias.

Choice B: Dyspnea is not a manifestation that the nurse should identify as indicating the client is hypokalemic. Dyspnea is a sensation of difficulty breathing or shortness of breath. Dyspnea can be caused by various conditions, such as asthma, chronic obstructive pulmonary disease (COPD), pneumonia, or pulmonary edema. Dyspnea is not directly related to hypokalemia, but it can be a sign of heart failure, which can cause fluid accumulation in the lungs and impair gas exchange.

Choice C: Oliguria is not a manifestation that the nurse should identify as indicating the client is hypokalemic. Oliguria is a reduced urine output, usually less than 400 mL per day or 30 mL per hour. Oliguria can be caused by various conditions, such as dehydration, kidney failure, urinary tract obstruction, or shock. Oliguria is not directly related to hypokalemia, but it can be a sign of kidney damage or impairment, which can affect electrolyte balance and fluid volume.

Choice D: Pitting edema is not a manifestation that the nurse should identify as indicating the client is hypokalemic. Pitting edema is a swelling of the tissues that leaves an indentation when pressed with a finger. Pitting edema can be caused by various conditions, such as venous insufficiency, lymphedema, liver cirrhosis, or malnutrition. Pitting edema is not directly related to hypokalemia, but it can be a sign of heart failure, which can cause fluid retention and overload in the body.

The correct answer is: d. Brachial pulse in the right arm.

Choice A reason: Palpating the radial pulse in the right arm is not the most appropriate choice following a cardiac catheterization with a left antecubital insertion site. While it is contralateral to the insertion site, the brachial pulse is preferred over the radial pulse for assessing circulation in the arm, as it is more proximal and can provide a better indication of arterial flow from the catheterization site.

Choice B reason: The radial pulse in the left arm is the correct choice because it evaluates distal circulation in the affected limb. Since the catheterization was performed through the left antecubital fossa, it is crucial to monitor blood flow further down in the arm. Palpating the radial pulse helps detect early signs of compromised perfusion, such as diminished pulse strength. Evidence-based guidelines from clinical sources highlight the importance of distal pulse assessment post-catheterization.

Choice C reason: Palpating the brachial pulse in the left arm is also not recommended. Since the catheterization was performed on the left side, there is a risk of arterial occlusion or spasm, which could affect the accuracy of the pulse assessment in the left arm.

Choice D reason: The brachial pulse in the right arm does not provide relevant information about the left arm’s vascular status post-catheterization. Since the right arm was not affected by the procedure, its pulse does not indicate possible complications in the left arm. Clinical assessment should focus on detecting perfusion issues in the limb where the catheter was inserted. Best practices recommend prioritizing the evaluation of circulation in the affected extremity.