DM / DNB Cardiology Entrance Mock Test 13
In this study, cangrelor was discontinued 1-6 hours prior to surgery, while aspirin was continued throughout the perioperative period. Bridging with cangrelor did not increase major bleeds prior to surgery, though minor bleeds, mostly ecchymosis at venipuncture site, was higher. P2Y12 assay documented sufficient platelet inhibition corresponding to levels required for anti thrombotic effect [1]. Cangrelor is awaiting approval and more large scale trials regarding the use of bridging are needed.
Reference
1. Angiolillo DJ et al; BRIDGE Investigators. Bridging antiplatelet therapy with cangrelor in patients undergoing cardiac surgery: a randomized controlled trial. JAMA. 2012;307:265–274.
Question 7Function of magnetic reed switch in an ICD (implantable cardioverter-defibrillator):AChanges pacing mode to asynchronous (e.g. VVI to VOO) and suspends all tachyarrhythmia therapies
BNone of these
CSuspends all tachyarrhythmia therapies
DChanges pacing mode to asynchronous (e.g. VVI to VOO)
Question 7 Explanation: ICD is a device which automatically detects and treats tachyarrhythmias. It is also equipped with back up pacing mode in case of bradyarrhythmias. All tachyarrhythmia therapies are suspending on application of magnet which activates the reed switch. Back up pacing function is not affected by reed switch activation in an ICD.
In pacemakers, activation of reed switch changes the pacing mode to an asynchronous one, without sensing function.
Question 8Acu...
Source: Cardiophile MD - Category: Cardiology Authors: Prof. Dr. Johnson Francis, MD, DM, FACC, FRCP Edin, FRCP London Tags: Cardiology MCQ DM / DNB Cardiology Entrance Source Type: blogs
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