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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Regular engagement in meditation for 10 minutes daily indicates effective learning and practice of meditation techniques, as consistency is key to developing this skill.
B. Breathing quickly is not indicative of effective meditation, as the practice typically involves slow, deep breathing to promote relaxation.
C. While lying on the floor can be a comfortable position for some, it does not specifically indicate effective learning in meditation, as it depends on the individual’s preferences.
D. Focusing on a particular image can be a part of meditation but does not solely demonstrate effective learning without the context of regular practice and the correct breathing techniques.
Correct Answer is B
Explanation
A. Multipersonal connectedness involves relationships with multiple people, which is not the focus of the nurse-patient connection in spiritual care.
B. Transpersonal connectedness refers to a connection that goes beyond the physical and mental levels, fostering a deeper spiritual relationship between the nurse and the patient, often characterized by empathy and understanding.
C. Interpersonal connectedness describes the relationship between individuals, focusing on social and emotional interactions, but does not encompass the spiritual dimension.
D. Intrapersonal connectedness relates to an individual's self-awareness and inner thoughts, not the connection with another person in a spiritual context.
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