There are many mechanisms underlying the hypertension which occurs after th
oracic transplantation. Previous disease, effects of cyclosporin, tacrolimu
s and steroid immunosuppression and cardiac denervation are major contribut
ory factors, Abnormal sodium and water balance is an important common media
ting faster. A new approach is clearly needed for classifying the severity
of hypertension in these patients taking into account day-night variation a
nd total blood pressure (BP) load: This would allow improved strategies for
investigation and treatment. The evidence suggests that ambulatory BP meas
urements should be included in the assessment of initial severity of pose-t
ransplant hypertension as well as response to treatment, Further studies ar
e needed to look at the effects of raised clinic and 24-h ambulatory BP and
its treatment on longer term morbidity and mortality in thoracic transplan
t patients.