A critical link between heart failure self-care and intrathoracic impedance

Lisa D. Rathman, Christopher Lee, Shantanu Sarkar, Roy S. Small

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

BACKGROUND: Effective self-care is regarded as essential to the management of heart failure (HF). The influence of self-care on HF decompensation, however, is not well understood. Accordingly, we examined the relationship between self-care and fluid accumulation accompanying worsening HF as indexed by decreasing intrathoracic impedance (Z). METHODS: Z data were collected from 58 HF patients with OptiVol enabled devices (Medtronic Inc, Minneapolis, Minnesota). Heart failure self-care was measured with the European Heart Failure Self-care Behaviour Scale. Regression modeling was used to describe the influence of HF self-care on the likelihood of a fluid index (FI) threshold crossing, the number of threshold crossings, and number of days spent above threshold. RESULTS: Patients were elderly (74.98 [SD, 8.12] years), with a mean left ventricular ejection fraction of 26.21% (SD, 9.77%), and 63.7% had class New York Heart Association III HF. Patients were followed up for 317 (SD, 96) days; 65.5% had FI threshold crossings (mean 1.45 [SD, 1.56] crossings), spending an average of 33.8 (SD, 42.4) days above FI threshold. Controlling for age, sex, left ventricular ejection fraction, functional class, and duration of follow-up, each additional point on the European Heart Failure Self-care Behaviour Scale was associated with an increase in the odds of having had an FI threshold crossing (adjusted odds ratio, 1.201; 95% confidence interval, 1.013-1.424; P

Original languageEnglish (US)
JournalJournal of Cardiovascular Nursing
Volume26
Issue number4
DOIs
StatePublished - Jul 2011

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Self Care
Electric Impedance
Heart Failure
Stroke Volume
Odds Ratio
Confidence Intervals
Equipment and Supplies

Keywords

  • adherence
  • heart failure
  • self-management

ASJC Scopus subject areas

  • Advanced and Specialized Nursing
  • Cardiology and Cardiovascular Medicine
  • Medicine(all)

Cite this

A critical link between heart failure self-care and intrathoracic impedance. / Rathman, Lisa D.; Lee, Christopher; Sarkar, Shantanu; Small, Roy S.

In: Journal of Cardiovascular Nursing, Vol. 26, No. 4, 07.2011.

Research output: Contribution to journalArticle

Rathman, Lisa D. ; Lee, Christopher ; Sarkar, Shantanu ; Small, Roy S. / A critical link between heart failure self-care and intrathoracic impedance. In: Journal of Cardiovascular Nursing. 2011 ; Vol. 26, No. 4.
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