Balancing give and take between patients and their spousal caregivers in hematopoietic stem cell transplantation

Objective: Hematopoietic stem cell transplantation (HSCT) is a demanding treatment. Spouses of HSCT patients assume caregiving responsibilities that can induce feelings of burden and disrupt relationship equity. On the basis of equity theory, we propose a conceptual framework examining the individual and dyadic experience of HSCT patients and their caregivers. The model includes feelings of inequity, patient self-perceived burden, caregiver burden, and distress.

Methods: The HSCT patients and their spousal caregivers were recruited prior to HSCT between March 2011 and September 2012. Each member of the dyad self-administered a questionnaire package.

Results: Seventy-two dyads were included in the path analyses. Our model demonstrated an inadequate statistical fit; however, with one modification, an adequate to good fit was obtained: χ² (df) = 6.01(5), normed χ² = 1.20, standardized root mean square residual = 0.048, comparative fit index = 0.99, Tucker-Lewis index = 0.96, and root-mean-square error of approximation = 0.05 (90% CI, 0.00-0.18). As hypothesized, pre-HSCT caregiver burden mediates the relationship between caregiver underbenefit and caregiver distress. However, patient self-perceived burden was not associated with patient distress; rather, patient perception of overbenefit was related to patient distress. In our modified model, the results demonstrate that patient overbenefit influenced caregiver burden; however, there was not a reciprocal influence, because caregiver variables did not affect patient variables.

Conclusions: Our proposed theoretical framework describes patients' and caregivers' individual experience of distress before HSCT but does not as clearly encompass the dyadic experience. Addressing perceived imbalances and providing psycho-education on role changes within HSCT dyads before transplantation may be a useful prehabilitation strategy for preventing distress.