Testing a Middle -Range Theory of Heart Failure Self-Care.

A middle-range theory of heart failure self-care, derived from the self-care deficit theory of nursing, was tested among 175 Arab American older adults with heart failure. The middle-range theory achieved good statistical fit, but not all hypothesized relationships were supported. Specifically, conceptualizing basic conditioning factors as a single latent variable was not supported.

Developing a Middle-Range Theory of Heart Failure Self-Care.

Middle-range nursing theories provide a bridge between the more abstract grand nursing theories, research, and clinical practice. As such, middle-range nursing theories derived from extant nursing theories are critical for developing and advancing both nursing science and practice. This paper describes the strategy used in developing a middle-range theory of heart failure self-care.