A patient has been diagnosed with heart failure and cardiac output is decreased. Which formula can the nurse use to calculate cardiac output?
Ventricular filling time/diastolic filling time
Stroke volume x heart rate
Myocardial contractility x myocardial blood flow
Preload/afterload
The Correct Answer is B
A. Ventricular filling time and diastolic filling time are not formulas used to calculate cardiac output; they pertain to the phases of the cardiac cycle.
B. Cardiac output is calculated by multiplying stroke volume (the amount of blood ejected by the heart with each beat) by heart rate (the number of beats per minute). This formula accurately reflects the overall volume of blood the heart pumps in one minute.
C. Myocardial contractility and myocardial blood flow are important factors in cardiac function but do not directly provide a formula for calculating cardiac output.
D. Preload and afterload are factors that affect stroke volume but are not used to calculate cardiac output directly.
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Correct Answer is D
Explanation
A. While hospice care is appropriate for those with terminal illnesses, the criteria are more specifically defined by life expectancy rather than just the diagnosis itself.
B. Although pain management is a significant aspect of hospice care, the criteria for eligibility focus on life expectancy rather than need for pain management alone.
C. Completion of an advance directive is encouraged but not a specific criterion for hospice care; patients can receive hospice services without having an advance directive in place.
D. Hospice care is typically designated for patients who are expected to live less than 6 months, focusing on providing comfort and support in the final stages of life.
Correct Answer is B
Explanation
A. While anxiety relief is important, holistic care encompasses the patient's overall well-being and not just the alleviation of symptoms.
B. Understanding how anxiety impacts the patient's daily functioning allows for a more comprehensive approach to care, addressing both psychological and practical concerns.
C. It is inappropriate to suggest to the patient that there is little hope for relief, as this can negatively affect their mental health.
D. Focusing solely on quick fixes does not address the underlying issues of chronic anxiety and may not lead to long-term improvements.
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