prevent dislodgement of the electrode from the chamber wall.

A. The lead wires of the permanent pacemaker

 

a. are inflexible to prevent dislodgement of the electrode from the chamber

wall.

b. are composed of a coiled metal conductor that is insulated with a fine

linen mesh.

c. consist of two electrodes implanted in the outside myocardial wall

(epicardium).

d. are passed through a suitable vein into one or both of the heart’s

chambers.

B. A pacemaker that senses the heart’s native electrical impulses and, if no

electrical activity is detected within a certain period of time, delivers a

short low voltage pulse to the chamber to stimulate the heartbeat is referred

to as a pacemaker.

a. fixed-rate

b. demand

c. rate-responsive

d. dual-chamber

C.  In the following mode the ventricle is paced and sensed. If spontaneous

Cardiac output is detected, then the device is inhibited.

a. VDD

b. DVI

c. VVI

d. DDD

D. On the ECG, the firing of the pacemaker and its movement

down the lead wire appears as a

a. narrow vertical line.

b. square box.

c. jagged biphasic wave.

d. flat line.

 

find the cost of your paper

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