Risks of Blood Volume Changes in Hypogonadal Men Treated with Testosterone Enanthate for Erectile Impotence

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Abstract
Administration of anabolic steroids carries many risks. We present a series of 15 patients with primary hypogonadism who as a group had statistically significant increases in whole body hematocrit and red blood cell volume while on testosterone therapy of 300 mg. intramuscularly every 3 weeks. A small decrease in plasma volume over-all was not significant. Subsequent analyses compared subgroups whose whole body hematocrit during testosterone therapy was either 48% or greater (9) or less than 48% (6). Interaction effects indicated that the subgroups were similar when off testosterone but when on testosterone the former group exhibited an increase in red blood cell volume and a decrease in plasma volume, while the latter group had little change in either measurement. Subsequent to stopping testosterone therapy 2 patients in the whole body hematocrit 48% or greater group suffered strokes and 1 had transient ischemic attacks while on therapy. No one in the whole body hematocrit less than 48% group has had any cerebrovascular symptoms. Clinical implications, as well as cost-effective and practical suggestions for detecting possible dangerous hemoconcentration are discussed.