Pharmacology Practice Quiz 8
20 Questions
| Total Attempts: 63
Questions and Answers
- 1.If you increase the levels of extracellular potassium, you will increase the resting membrane potential (make less negative)
- A.
True
- B.
False
- 2.Loss of function mutations in the hERG gene would result in short QT syndrome
- A.
True
- B.
False
- 3.Torsades de pointes is a life threatening atrial arrhythmia.
- A.
True
- B.
False
- 4.A gain of function mutation in the sodium channel would result in prolongation of the action potential.
- A.
True
- B.
False
- 5.Patients with Congestive Heart Failure are more vulnerable to cardiac arrythmias than patients without CHF.
- A.
True
- B.
False
- 6.An increased expression of the sodium/calcium exchanger can produced DADs.
- A.
True
- B.
False
- 7.The three mechanisms of cardiac arrythmias are Enhanced Automaticity, afterdepolarizations & triggered automatcity, and Pharmacology quizzes.
- A.
True
- B.
False
- 8.Subclass IA of the Sodium Channel Blockers have short duration of blockade.
- A.
True
- B.
False
- 9.Lidocaine preferentially interacts with closed sodium channels.
- A.
True
- B.
False
- 10.Amiodarone only shows class III (potassium channel blocking) characteristics.
- A.
True
- B.
False
- 11.The correct pronunciation of amiodarone is:
- A.
A MEE oh da rone
- B.
A mee oh DAR one
- 12.Calcium Channel blockers are used to slow the rate of AV-conduction in patients with atrial fibrillation.
- A.
True
- B.
False
- 13.Both flecainide and propranolol showed increased mortality for post-myocardial infarction in the CAST study.
- A.
True
- B.
False
- 14.A non-selective hERG blocker is less likely to have EADs as a consequence than a selective hERG blocker.
- A.
True
- B.
False
- 15.The proarrhythmia classes are Class IB and Class III.
- A.
True
- B.
False
- 16.Adenosine receptors are G coupled protein receptors.
- A.
True
- B.
False
- 17.Taken concurrently, erythromycin and disopyramide will decrease the incidence of sudden cardiac death.
- A.
True
- B.
False
- 18.I can't wait until December 15th.
- A.
True
- B.
False
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