The nurse is assessing a client with a heart rate of 124 bpm. What clinical finding(s) should the nurse assess as causes of tachycardia? Select all that apply.
A.
Blood glucose 90 mg/dL
B.
Pain level of 10 out of 10
C.
Temperature 101.9 F
D.
Hemoglobin: 7g/dl
E.
Cocaine abuse
The Correct Answer and Explanation is :
In assessing a client with a heart rate of 124 beats per minute (bpm), tachycardia can be a response to various underlying conditions or stimuli. To determine the causes of tachycardia, the nurse should consider the following clinical findings:
B. Pain level of 10 out of 10
C. Temperature 101.9°F
D. Hemoglobin: 7 g/dL
E. Cocaine abuse
Explanation:
1. Pain Level of 10 out of 10: Severe pain is a well-known cause of tachycardia. When a patient experiences intense pain, the body’s stress response is activated, leading to increased sympathetic nervous system activity. This results in the release of stress hormones like adrenaline, which can cause the heart rate to rise as part of the fight-or-flight response. Thus, a high pain level can contribute significantly to tachycardia.
2. Temperature 101.9°F: Fever is another common cause of increased heart rate. When the body temperature rises, the metabolic rate increases, which can lead to a compensatory increase in heart rate to meet the higher metabolic demands. This is a natural physiological response to infection or other causes of fever, contributing to tachycardia.
3. Hemoglobin: 7 g/dL: A low hemoglobin level (anemia) can cause tachycardia. Hemoglobin is responsible for transporting oxygen throughout the body. When levels are low, the body compensates by increasing the heart rate to enhance oxygen delivery to tissues. This compensatory mechanism helps to meet the oxygen demands of tissues despite reduced oxygen-carrying capacity of the blood.
4. Cocaine Abuse: Cocaine is a stimulant drug that can cause significant cardiovascular effects, including tachycardia. Cocaine increases sympathetic nervous system activity and can lead to the release of stress hormones, which raises heart rate. Chronic or acute use of cocaine can significantly affect heart rhythm and increase heart rate.
Not Applicable:
A. Blood Glucose 90 mg/dL: A blood glucose level of 90 mg/dL is within the normal range and is unlikely to cause tachycardia on its own. While extreme hypo- or hyperglycemia can affect heart rate, a normal glucose level generally does not.
In summary, the findings that should be assessed as causes of tachycardia include severe pain, fever, low hemoglobin, and cocaine abuse. These factors can all contribute to an elevated heart rate through various physiological mechanisms or substance effects.