The present longitudinal study was designed to determine the prevalenc
e of depression in male and female patients undergoing cardiac surgery
, and to examine what factors are associated with depression before an
d after surgery. One day prior to surgery (T1), and one day prior to d
ischarge from the hospital (T2), 141 patients completed a psychometric
test battery including the Center for Epidemiological Studies Depress
ion Scale (CES-D), the State-Trait Anxiety Inventory (STAI), and the P
erceived Social Support Scale (PSSS). Data were also collected on 13 p
hysiological measures. Forty-seven per cent of patients were depressed
(defined as a score of 16 or above on the CES-D) at T1. Scores on the
CES-D significantly increased from T1 (M = 15) to T2 (M = 20), with 6
1 per cent of patients classified as depressed at T2. Factors associat
ed with depression at T1 were female gender, higher state anxiety, and
less social support. Depressed patients at T2 were characterized by h
igher scores on the STAI at T2 and higher scores on the CES-D at T1. T
he prevalence of depression in cardiac surgery patients, particularly
women, may be underrecognized and warrants increased attention.