I know
----- Original Message -----
From: "Andy Webster" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, October 20, 2003 10:11 PM
Subject: Re: SVT
> And I did say evidence....Best Bets only looks at a tiny proportion with
> the search engine Medline which with a good quality searcher misses up
> to 50% of evidence.
>
> -----Original Message-----
> From: Accident and Emergency Academic List
> [mailto:[log in to unmask]] On Behalf Of Scott
> Sent: 20 October 2003 21:58
> To: [log in to unmask]
> Subject: Re: SVT
>
> Asthma as a contraindication?
>
> See http://www.bestbets.org/cgi-bin/bets.pl?record=00112
>
> Scott Taylor
>
> ----- Original Message -----
> From: "Andy Webster" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, October 20, 2003 9:19 PM
> Subject: Re: SVT
>
>
> > If you only find 30% revert with adenosine, you are either not giving
> > the right dosage in the right way, or giving the adenosine to patients
> > without an SVT. The following is taken from the Prodigy website. A bit
> > higher than 30% I suspect. Intravenous adenosine is now the drug of
> > choice for terminating SVT. It has a rapid, short-lived action,
> blocking
> > conduction through the atrioventricular (AV) node, and is effective in
> > virtually all cases of junctional tachycardia.
> > Intraveous adenosine can also help diagnose an arrhythmia. If a
> > tachycardia is halted, it is likely to have been junctional in origin.
> > If there is transient AV block with specific ECG changes
> (characteristic
> > P waves, flutter, or fibrillation waves) the arrhythmia is likely to
> be
> > atrial tachycardia, flutter, or fibrillation. If adenosine has no
> effect
> > the arrhythmia is likely to be ventricular in origin [DTB, 1993; Chun
> > and Sung, 1995; Ganz and Friedman, 1995; Li-Saw-Hee, 1998].
> >
> > As a side issue asthma is a contra-indication/or cautioned. Due to its
> > short half life, it is probably still quite safe?is there much
> evidence
> > for catastrophy from using adenosine in asthmatics.
> >
> > Andy Webster
> > A&E SPR, and fan of adenosine
> >
> > -----Original Message-----
> > From: Accident and Emergency Academic List
> > [mailto:[log in to unmask]] On Behalf Of Rowley Cottingham
> > Sent: 20 October 2003 21:01
> > To: [log in to unmask]
> > Subject: Re: SVT
> >
> > > Can anyone figure why Tony Blair needed a cardioversion i.e. DC
> shock?
> > > I've
> > > only very rarely seen SVT not respond to adenosine, and on those
> rare
> > > occasions verapamil always worked.
> > >
> > > AF
> > >
> > >
> > Not my experience at all. I only see about 30% revert with adenosine.
> I
> > tend to ask for
> > cardioversion rather than verapamil as the next step.
> >
> > Best wishes,
> >
> >
> > Rowley Cottingham
> >
> > [log in to unmask]
> > Visit the new and improved http://www.emergencyunit.com
> >
> >
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