Physio Ch 13

Question 1

Patients with this condition have sensitive pressure receptors in the carotid sinus region

Answer 1

carotid sinus syndrome

Question 2

records by the height of successive spikes the duration of interval between successive QRS complex

Answer 2

cardiotachometer

Question 3

heart rate is increased and decreased (by?) during quiet respiration

Answer 3

5%

Question 4

during deep respiration heart rate is increased and decreased by? (%?)

Answer 4

30 %

Question 5

impulse from the sinus node is blocked before it enters the atrial muscle

Answer 5

sinus atrial block

Question 6

decreases in length with faster
heartbeat and increases with slower heartbeat

Answer 6

P-R interval

Question 7

If P-R interval increases to greater than 0.20 second, P-R interval is prolonged and the patient have?

Answer 7

first degree incomplete heart block

Question 8

a delay of conduction from the atria to the ventricles but not actual blockage of conduction

Answer 8

first degree block

Question 9

One way to determine severity of acute rheumatic heart disease

Answer 9

P-R interval

Question 10

atrial P wave but no QRS-T wave known to be “dropped beats” of the ventricles, is a phenomenon called as?

Answer 10

second degree heart block

Question 11

P waves become dissociated from the QRS-T complexes, where atria beats 100/min and ventricles beat 40/min

Answer 11

complete AV block or 3rd degree block

Question 12

this condition occurs in hearts with borderline ischemia of the conductive system.

Answer 12

stokes-adam syndrome (ventricular escape)

Question 13

suppressed state of ventricular excitability due to greater rate of atria than natural rhythm of the ventricles

Answer 13

over-drive suppression

Question 14

periodic fainting spells

Answer 14

Stokes-adams syndrome

Question 15

results from partial intraventricular block every other heartbeat

Answer 15

electrical alternans