Various sounds are heard when assessing a blood pressure. What does the second sound heard through the stethoscope represent?
Systolic pressure
Pulse pressure
Auscultatory gap
Diastolic pressure
The Correct Answer is D
A. Systolic pressure:
The first sound heard during blood pressure measurement corresponds to the systolic pressure, the pressure in the arteries when the heart is contracting.
B. Pulse pressure:
Pulse pressure is the numerical difference between the systolic and diastolic pressures but is not specifically represented by a sound in blood pressure measurement.
C. Auscultatory gap:
An auscultatory gap is a temporary disappearance of sounds during blood pressure measurement, typically occurring between the systolic and diastolic pressures. It is not directly associated with the second sound.
D. Diastolic pressure:
The second sound heard corresponds to the closure of the aortic valve, marking the beginning of diastole. This sound represents the diastolic pressure, which is the pressure in the arteries when the heart is at rest.
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Related Questions
Correct Answer is A
Explanation
A. To prevent contractions in the hand:
The use of hand and wrist rolls helps prevent contractures, which are permanent shortening of muscles or joints. This is particularly important in comatose patients or those with limited mobility to maintain proper hand positioning and prevent deformities.
B. To prevent skin breakdown:
While proper positioning can contribute to preventing skin breakdown, the primary purpose of hand and wrist rolls, in this context, is to address the risk of contractures rather than skin breakdown.
C. To prevent decreased perfusion in the lower extremities:
The action described is specifically related to the hands and wrists, not the lower extremities. It is not designed to prevent decreased perfusion in the lower extremities.
D. To prevent pooling of blood in the hand:
While maintaining proper hand positioning may contribute to optimal circulation, the primary purpose is to prevent contractures rather than addressing blood pooling.
Correct Answer is D
Explanation
A. Systolic pressure:
The first sound heard during blood pressure measurement corresponds to the systolic pressure, the pressure in the arteries when the heart is contracting.
B. Pulse pressure:
Pulse pressure is the numerical difference between the systolic and diastolic pressures but is not specifically represented by a sound in blood pressure measurement.
C. Auscultatory gap:
An auscultatory gap is a temporary disappearance of sounds during blood pressure measurement, typically occurring between the systolic and diastolic pressures. It is not directly associated with the second sound.
D. Diastolic pressure:
The second sound heard corresponds to the closure of the aortic valve, marking the beginning of diastole. This sound represents the diastolic pressure, which is the pressure in the arteries when the heart is at rest.
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