As compared to other tri- and tetracyclics, antidepressant therapy in
patients suffering also from cardiac disease with mianserin is known t
o be relatively safe. Hypertensive effects of mianserin have not been
described so far. We report a case of a 64 years old patient with a di
latative cardiomyopathy and left anterior hemiblock, who developed hyp
ertension (maximum:180/125 mmHg) during mianserin treatment. Previous
treatment with tranylcypromine has been stopped two weeks before. Afte
r discontinuance of mianserin blood pressure rapidly came back to norm
al values. The possible noradrenergic and serotonergic mechanisms of t
his phenomenon are discussed in relation to pretreatment with tranylcy
promine.