1. Wat do u mean by "synchronised cardioversion"? Where is it NOT given/NOT prferred?
A.....Synchronization means giving an electric shock that is timed to the R or S wave of the QRS complex so that it wldn't be in the repolarization phase of the ventricle and induce V Fib....It is used to terminate re-entrant rhythms in atria or in V-Tach.... Un-synchronized Defibrillation is used for V fib
Actually Cardioversion is a term used to denote delivery of electrical energy in a synchronized fashion and Defibrillation is used to denote deilvery of shock in an un-synchronized fashion.......
2.When do u give intracardiac epinephrine?
A....It should never be useful to give inta-cardiac Epi
3.Which needs more electricity for cardioversion(in JOULES), atrial arrythmias or ventricular? and y?
A...Ventricular Arrhythmias require more energy because of the bulk of the muscle mass....
** Note:
V Tach ----->low energy >100 Joules is used
A Fib------> High energy starting at 200 J is used
4.Y do u have to treat mobitz type 2 block & complete block? and how?
A...Because they cause hemodynamic instability and are comonly progressive...Mobitz type 2 often progresses to complete heart block
5. When/Wat r the conditionsin which u anticoagulate a pt. with atrial fib, before cardioverting?
A...Elective cardioversion when the patient is hemodynamically stable and past 2 days with a new onset A.Fib.or for elective cardioversion in old AFib..anticoagulate for 3 weeks then cardiovert ...and then 4 more weeks of anticaogulation
6.Which antibodies in mother r associated with complete heart block in newborn?
A....Anti_Ro in neonatal lupus..also associated with neonatal skin rash and throbocytopenia
7.Wat is the next best step in a 47 yo male pt. who has a HR of 47/min, with no other symptoms?
A...EKG and then Pacemaking if Mobitz Type 2 or Complete heart block
8.Y don't u cardiovert an asystole pt. like u do for V.fib pt.?
A...Defibrillation is useful to correct an electical abnormality and in asystole there is no electrical abnormality......there is no electrical activity at all.....
9. Wat is "tachy-brady syndrome?"
A...Sick sinus syndrome with Supraventricular Tacharrythmias......
10.WAt is the most common electrolyte disturbance asso. with torsade de pointes? and wat is the other name for torsade?
A...Hypokalemia ...
Polymorphic Ventricular Tachycarida
Drugs...famous for the Torsades are Class IA and Class III , TCA
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| smitha
Forum Elite
Topics: 53
Posts: 236
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U were just XCELLENTTTTTTTTT there delusional!!!!!!!
To be more clear with some..........
4.... U shud treat mobitz 2 & complete HB coz of these frequent syncopal attacks which r dangerous to the pt.s.......called as "ADAM'S STOKES ATTACKS"!!!!!!!!!!! and of course as u said, they might become hemodynamically unstable.
8..... Well, in asystole u don't cardivert coz cardioversion works by causing ASYSTOLE(depolarizes every myocyte of the heart). It reorganizes the heart RHYTHM but doesn't RESTART the heart! And so, a dead heart/asystole, is brought back only by pacer.
10......The most common metab. abnormality asso. with torsade de pointes is...........hypomagnesemia!!!!!!!!!!!!
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| smitha
Forum Elite
Topics: 53
Posts: 236
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source: my own qs, rference from kaplan, CMDT
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