• TEST BANK FOR CARDIOPULMONARY
ANATOMY AND PHYSIOLOGY ESSENTIALS
OF RESPIRATORY CARE 7TH EDITION
Paired (Couplet) CORRECT ANSWER two closely coupled PVCs in a
row
Ventricular Tachycardia (sustained V-tach)
P wave- usually cannot be identified
PR Interval- cannot be measured
QRS Complex greater than 0.12 second & bizarre
T wave - usually cannot be identified
QRS rhythm- regular/slightly irregular CORRECT ANSWER three or
PVCs occurring in a row. QRS complex is wide & bizarre in appearance making it
difficult or impossible to identify P & T waves. The rate is regular or slightly
irregular 100-170 bpm
P wave CORRECT ANSWER represents atrial depolarization
shape symmetrical & upright
duration 0.08-0.11 second(2-2.5 small squares)
amplitude 0.2-0.3 mV (2-3 small vertical squares)
PR interval CORRECT ANSWER total atrial electrical activity prior to
activation of the bundle of His, ventricular branches, & Purkinje fiber system
duration 0.12-0.20 second(3-5 horizontal small squares)
, QRS complex CORRECT ANSWER ventricular depolarization
duration less than 0.12 second(2.5 little squares)
ST segment CORRECT ANSWER time between ventricular
depolarization & repolarization
0.12 second or less
May be elevated or depressed due to myocardial injury, ischemia, & certain cardiac
medications.
T wave CORRECT ANSWER ventricular repolarization
duration 0.20 second or less
U wave CORRECT ANSWER usually is flat or not seen. Often prominent
in the presence of certain electrolyte disturbances, certain medications, & heart
disease
QT interval CORRECT ANSWER total ventricular activity (QRS
complex, ST segment, & T wave)
about 0.38 second varies with male & female & age
faster the HR the shorter the QT interval
standard limb leads (attached to arms & legs) CORRECT ANSWER leads
I, II, III, aVR, aVL, & aVF
bipolar leads CORRECT ANSWER leads I, II, & III (they use two
electrodes to monitor the heart, one positive & one negative)
ANATOMY AND PHYSIOLOGY ESSENTIALS
OF RESPIRATORY CARE 7TH EDITION
Paired (Couplet) CORRECT ANSWER two closely coupled PVCs in a
row
Ventricular Tachycardia (sustained V-tach)
P wave- usually cannot be identified
PR Interval- cannot be measured
QRS Complex greater than 0.12 second & bizarre
T wave - usually cannot be identified
QRS rhythm- regular/slightly irregular CORRECT ANSWER three or
PVCs occurring in a row. QRS complex is wide & bizarre in appearance making it
difficult or impossible to identify P & T waves. The rate is regular or slightly
irregular 100-170 bpm
P wave CORRECT ANSWER represents atrial depolarization
shape symmetrical & upright
duration 0.08-0.11 second(2-2.5 small squares)
amplitude 0.2-0.3 mV (2-3 small vertical squares)
PR interval CORRECT ANSWER total atrial electrical activity prior to
activation of the bundle of His, ventricular branches, & Purkinje fiber system
duration 0.12-0.20 second(3-5 horizontal small squares)
, QRS complex CORRECT ANSWER ventricular depolarization
duration less than 0.12 second(2.5 little squares)
ST segment CORRECT ANSWER time between ventricular
depolarization & repolarization
0.12 second or less
May be elevated or depressed due to myocardial injury, ischemia, & certain cardiac
medications.
T wave CORRECT ANSWER ventricular repolarization
duration 0.20 second or less
U wave CORRECT ANSWER usually is flat or not seen. Often prominent
in the presence of certain electrolyte disturbances, certain medications, & heart
disease
QT interval CORRECT ANSWER total ventricular activity (QRS
complex, ST segment, & T wave)
about 0.38 second varies with male & female & age
faster the HR the shorter the QT interval
standard limb leads (attached to arms & legs) CORRECT ANSWER leads
I, II, III, aVR, aVL, & aVF
bipolar leads CORRECT ANSWER leads I, II, & III (they use two
electrodes to monitor the heart, one positive & one negative)
