PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The patient with tachycardia who has a heart rate of 115 complains of shortness of breath. The nurse interprets this complaint as being related to which problem?
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Pulmonary edema
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Drop in cardiac output
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Impending pneumonia
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Increasing anxiety
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Explanation:
Detailed explanation-1: -Compensatory tachycardia is a common response for patients with significantly low blood pressure to reduce cardiac output. Initially, this compensatory response has a favorable effect on cardiac output but can be harmful when it becomes persistent.
Detailed explanation-2: -Tachycardia of atrial or ventricular origin reduces stroke volume and cardiac output, particularly when the ventricular rate is greater than 160 beats/min. The stroke volume becomes reduced because of decreased ventricular filling time and decreased ventricular filling (preload) at high rates of contraction.
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