GMS 6530 (Med Pharm II - Cardio) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
PROBLEM SET 4 exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
Fast inactivation of a Na+ channel is accomplished through which mechanism?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Binding of K+ |||\\\ |||\\\
Large-scale conformation change |||\\\ |||\\\
Channel internalization |||\\\
Protein binding |||\\\
Movement of the inactivation gate - correct answer✔✔Movement of the inactivation gate
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
The electrical impulse responsible for cardiac contraction begins in what location?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Atria
AV node
|||\\\
SA node
|||\\\
Purkinje fibers |||\\\
Ventricles - correct answer✔✔SA node |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which type of arrhythmia features the least control of heart contractions?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Bradycardia
Tachycardia
, Fibrillation - correct answer✔✔Fibrillation |||\\\ |||\\\ |||\\\ |||\\\
Which mechanism of arrhythmia is triggered by the ANS?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Enhanced normal automaticity |||\\\ |||\\\
Early afterdepolarizations
|||\\\
Delayed afterdepolarizations - correct answer✔✔Enhanced normal automaticity
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
A Ca2+ channel blocker would be expected to alleviate which mechanism of arrhythmia?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Enhanced normal automaticity |||\\\ |||\\\
Abnormal automaticity |||\\\
Early afterdepolarizations
|||\\\
Delayed afterdepolarizations - correct answer✔✔Delayed afterdepolarizations
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which type of arrhythmia would appear on an ECG as a large downward peak occurring before
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
any upwards peaks?
|||\\\ |||\\\
Premature ventricular beat |||\\\ |||\\\
Atrial fibrillation |||\\\
Torsade de Pointes |||\\\ |||\\\
Ventricular fibrillation - correct answer✔✔Premature ventricular beat |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which type of arrhythmia would appear on an ECG as a repeated pattern of small, irregular P
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
waves (sometimes not even considered to be true p waves) with interspersed QRS waves?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Premature ventricular beat |||\\\ |||\\\
PROBLEM SET 4 exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
Fast inactivation of a Na+ channel is accomplished through which mechanism?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Binding of K+ |||\\\ |||\\\
Large-scale conformation change |||\\\ |||\\\
Channel internalization |||\\\
Protein binding |||\\\
Movement of the inactivation gate - correct answer✔✔Movement of the inactivation gate
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
The electrical impulse responsible for cardiac contraction begins in what location?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Atria
AV node
|||\\\
SA node
|||\\\
Purkinje fibers |||\\\
Ventricles - correct answer✔✔SA node |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which type of arrhythmia features the least control of heart contractions?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Bradycardia
Tachycardia
, Fibrillation - correct answer✔✔Fibrillation |||\\\ |||\\\ |||\\\ |||\\\
Which mechanism of arrhythmia is triggered by the ANS?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Enhanced normal automaticity |||\\\ |||\\\
Early afterdepolarizations
|||\\\
Delayed afterdepolarizations - correct answer✔✔Enhanced normal automaticity
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
A Ca2+ channel blocker would be expected to alleviate which mechanism of arrhythmia?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Enhanced normal automaticity |||\\\ |||\\\
Abnormal automaticity |||\\\
Early afterdepolarizations
|||\\\
Delayed afterdepolarizations - correct answer✔✔Delayed afterdepolarizations
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which type of arrhythmia would appear on an ECG as a large downward peak occurring before
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
any upwards peaks?
|||\\\ |||\\\
Premature ventricular beat |||\\\ |||\\\
Atrial fibrillation |||\\\
Torsade de Pointes |||\\\ |||\\\
Ventricular fibrillation - correct answer✔✔Premature ventricular beat |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Which type of arrhythmia would appear on an ECG as a repeated pattern of small, irregular P
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
waves (sometimes not even considered to be true p waves) with interspersed QRS waves?
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Premature ventricular beat |||\\\ |||\\\
