An electrolyte replacement strategy
But there actually is some evidence, albeit more retrospective and epidemiologic than the sort of large randomized trial that might beregarded as definitive. I refer you to a review by 2 pharmacologistsin Dundee, UK: McDonald JE, Struthers AD What is the optimal serumpotassium level in cardiovascular patients? J Am Coll Cardiol 2004;43:155-161.
A figure from that paper in pdf format is attached (no idea whether it will show up on the list; those of us following the digest versioncan’t see attachments). This figure, from Norderhaug, et al.Circulation 1985; 71;645-9, shows the probability of VT as a functionof serum potassium. Incidence is quite low at potassium greater than4.5.