Clinical Medical Assistant Certification Exam Practice Question
Which of the following parts of a sphygmomanometer Is used to read the systolic and diastolic values of a patient's blood pressure?
Correct Answer: E
Rationale: The pressure indicator displays the systolic and diastolic values by measuring the pressure within the cuff. When the cuff is inflated and then gradually deflated, the indicator shows the pressure readings corresponding to the heart's contractions (systolic) and relaxations (diastolic).
Option A, the cuff, is essential for applying pressure but does not display readings. Option B, the diaphragm, is part of the stethoscope used for auscultation, not for reading blood pressure. Option C, the inflation bulb, is used to inflate the cuff but does not provide any readings. Option D, the pressure control valve, regulates airflow but does not indicate pressure values.
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