Psychosocial predictors of long-term success of in-patient pulmonary rehabilitation of patients with COPD

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Abstract
Studies of the long-term outcome of pulmonary rehabilitation have measured quality of life (QOL) mainly as disease-specific functional impairment, but long-term effects on overall satisfaction with health or life have not yet been adequately evaluated. Furthermore, the influence of personality traits on the long-term outcome of pulmonary rehabilitation have not so far been examined. The following questions were studied: 1) What are the short- and long-term effects of a rehabilitation programme on lung function (forced expiratory volume in one second as percentage of predicted (FEV1 % pred)), on satisfaction with life (defined as quality of life), and on health satisfaction (HS)? 2) Are there physical or psychosocial predictors for the success of pulmonary therapy? In this prospective clinical study, baseline data (FEV1 % pred, arterial oxygen tension (Pa,O2), QOL, HS, dyspnoea, coping scales) were studied at entry (t1); follow-up on discharge (t2); and 1 yr after hospitalization (t3) in 54 consecutive patients (mean age 64 yrs) with chronic obstructive pulmonary disease (COPD). Complete data were obtained at follow-up on 32 subjects. FEV1 % pred improved from 42% (t1) to 52% (t2) (p<0.001) but dropped to 46% at t3 (t1-t3: p<0.05). QOL improved significantly during hospitalization but dropped to initial levels 1 yr after discharge. A significant increase in health satisfaction during hospitalization was maintained at follow-up. Improvements in lung function were greater in patients with higher QOL scores on entry; subjects with the greatest tendency to use wishful thinking as a coping strategy had less improvement. In conclusion, the effects of pulmonary rehabilitation on lung function and health satisfaction are positive and enduring. Quality of life and coping have an effect on the long-term outcome of pulmonary rehabilitation, probably as expressions of patients' personality traits.

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