Azathioprine is administered to treat increasing numbers of disorders
over a wide range of organ systems. The potential for the drug to caus
e widespread organ dysfunction is not fully appreciated. In fact, azat
hioprine can cause multisystem organ dysfunction involving the kidneys
, liver, and cardiovascular system. The discovery of global cardiac dy
sfunction as one component of this complication may indicate a mechani
sm of hypotension. Clinicians must be aware of the potential for azath
ioprine to cause such toxicities to facilitate appropriate patient man
agement.