Falsely elevated systolic and diastolic blood pressure readings can occur when using either a manual ...

(Answer to Q. 1)  ANS: C
An undersized cuff can falsely elevate readings in both manual sphygmomanometers and auto-mated blood pressure monitoring systems.

(Answer to Q. 2)  ANS: B
The pressure at which a tapping sound is first heard as the cuff is deflated is the systolic pressure.

(Answer to Q. 3)  ANS: A
The fourth lumen of a specially designed thermodilution catheter contains electrical wires, known as the thermistor, that is located approximately 2 cm from the tip of the catheter.

(Answer to Q. 4)  ANS: B
When a pulmonary artery catheter is in the proper position, the proximal port will be located in the right atrium and can be used to monitor central venous pressure. Cardiac output can be meas-ured by using the thermistor a few centimeters from the tip of the catheter. The pulmonary artery pressure is measured by using the distal port without balloon inflation when in the pulmonary ar-tery. When the balloon is inflated, the distal port will measure the pulmonary capillary wedge pressure.

(Answer to Q. 5)  ANS: D
The thermistor is used to perform a thermodilution cardiac output measurement. The distal port is used to measure pulmonary pressure and when the balloon is inflated it is used to measure pul-monary capillary wedge pressure. The balloon is inflated from the inflation port. The most proxi-mal port is used to measure central venous pressure.

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