A nurse recognizes that alterations in cardiac output are caused by changes in heart rate, preload, afterload, and contractility. Which interventions are correctly matched to treat the cause of low cardiac output? Select all that apply.
a) Low afterload: administer vasopressor.
b) Low afterload: administer vasodilator.
c) Low right atrial (R

Low afterload: administer vasopressor.

Low afterload: administer vasodilator.

Low right atrial (RA) pressure: administer diuretics.

Low preload: administer fluid bolus.

High preload: administer diuretic or vasodilator.

Answer and Explanation

Correct Answer : D

Choice A reason: Administering a vasopressor is not appropriate for low afterload. Vasopressors are used to increase blood pressure by causing vasoconstriction, which increases afterload. However, the administration of a vasopressor for low afterload is contradictory because the goal for low afterload would be to reduce the strain on the heart, not to increase it.

Choice B reason: Administering a vasodilator for low afterload is not correct. Vasodilators decrease afterload by causing the blood vessels to widen, reducing the resistance the heart has to pump against. Administering a vasodilator to treat low afterload is inappropriate because it would further lower afterload, potentially leading to inadequate perfusion and worsening cardiac output.

Choice C reason: Administering diuretics for low right atrial (RA) pressure is inappropriate. Diuretics help to remove excess fluid from the body, reducing blood volume and venous pressure. However, if a patient has low right atrial pressure, reducing blood volume further with diuretics could exacerbate the issue, leading to decreased cardiac output and poor perfusion.

Choice D reason: Administering a fluid bolus is the correct intervention for low preload. Preload refers to the volume of blood in the ventricles at the end of diastole. If preload is low, administering fluids increases blood volume, which enhances ventricular filling and improves cardiac output. This intervention helps to stabilize hemodynamics and improve overall perfusion.

Choice E reason: Administering a diuretic or vasodilator is the appropriate intervention for high preload. High preload indicates an excess of blood volume returning to the heart, which can strain the cardiac muscle and reduce efficiency. Diuretics help remove excess fluid, while vasodilators decrease venous return and reduce the volume of blood the heart has to handle, thus optimizing cardiac function and output.

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Correct Answer is B

Explanation

Choice A reason: A urine output of 40 mL/hr is within the acceptable range, as normal urine output is typically around 30-50 mL/hr. While it should be monitored, it does not indicate an immediate life-threatening issue requiring urgent assessment.

Choice B reason: A blood pressure change from 128/74 to 110/88 mmHg may indicate potential hemodynamic instability. Although the systolic blood pressure has decreased, the diastolic pressure has increased, which can be concerning. This patient may be at risk for developing more significant blood pressure changes or other complications, making this situation the highest priority for assessment.

Choice C reason: An oxygen saturation level of 94% is generally considered acceptable. While it is on the lower end of the normal range, it does not indicate an immediate life-threatening condition. Continuous monitoring is important, but it is not the most urgent situation compared to the blood pressure change.

Choice D reason: A pulse change from 100 to 88 beats/min represents a decrease in heart rate but remains within the normal range for adult heart rate (60-100 beats/min). While this change should be noted and monitored, it is not as urgent as the blood pressure change that may indicate hemodynamic instability.

A. The client needs a muscle relaxant. B. The client has a nutritional imbalance. C. The client is experiencing a reaction to morphine. D. The client may be developing hypocalcemia.

Correct Answer is D

Explanation

Choice A reason: Administering a muscle relaxant addresses the symptom of muscle twitching and jerking, but it does not identify or treat the underlying cause. For patients with acute pancreatitis, muscle twitching and jerking could be indicative of a more serious condition.

Choice B reason: While a nutritional imbalance could potentially lead to symptoms like muscle twitching and jerking, in the context of acute pancreatitis, the nurse should consider more specific causes related to the condition. Nutritional imbalances do not usually explain these symptoms in patients with pancreatitis as well as hypocalcemia does.

Choice C reason: A reaction to morphine could include various symptoms such as itching, nausea, or constipation, but muscle twitching and jerking are not common side effects. The nurse should consider other causes related to the patient's condition of acute pancreatitis.

Choice D reason: Hypocalcemia, or low calcium levels, is a common complication of acute pancreatitis. It can lead to symptoms such as muscle twitching and jerking, as calcium is crucial for proper muscle function and nerve signaling. This makes hypocalcemia the most relevant and accurate interpretation of the patient's symptoms in this context.

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Naxlex Comprehensive Predictor Exams

The nurse gets hand-off report on four patients. Which patient would the nurse assess first?

Correct Answer is B

Explanation

The nurse notes that a client with acute pancreatitis occasionally experiences muscle twitching and jerking. How should the nurse interpret the relevance of these symptoms?

Correct Answer is D

Explanation

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