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Author7 Posts
  #1

The drug of first choice to acutely increase refractorines in the atrioventricular node is:
A. verapamil

B. quinidine

C. lidocaine

D. adenosine


E. sotalol




  #2

D. adenosine


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life is guud

  #3

Surely correct. AV blockers are

A = adenosine ~ very short t1/2 ( 10-30 sec) and rapidly acting

B = beta blockers

C = Calcium channel blockers

D = Digoxin ~ throught its vagomimetic action




  #4

I'm confused by the term refracoriness. R u talking about refractory period? If so , adenosine decreases the refractory period?
Plz explain , ssrpk

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If you plan too much ahead of time, You lose your focus.

  #5

girl^interrupted wrote:
I'm confused by the term refracoriness. R u talking about refractory period? If so , adenosine decreases the refractory period?
Plz explain , ssrpk

Where did you get that Adenosine decreases "refractory period"???

Reference please


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FA is just a good revision book.It is not a "real" learning tool.

  #6

more qs, this a good q to pick at and learn:

Do you guys mean effective refractory period or absolute refractory period? Does any sharp doc know the difference?

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Smell the coffee! "Is That an Osler move??"

  #7

The ratio of ERP (effective Refractory Period) to APD(Action Potential Duration) is a measure of Refractoriness.
APD - ERP = RRF(Relative Refractory Period)

Adenosine increases AV nodal refractory period.

I guess this may help.











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