Vitamin D deficiency and functional response to CRT in heart failure patients View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-04

AUTHORS

A. Separham, L. Pourafkari, B. Kazemi, Y. Haghizadeh, F. Akbarzadeh, M. Toufan, H. Sate, N. D. Nader

ABSTRACT

BACKGROUND: Vitamin D deficiency has been associated with a poor outcome in patients with heart failure (HF). We examined the role of vitamin D in the response of HF patients to cardiac resynchronization therapy (CRT). METHODS: The study comprised 50 patients (30 men and 20 women) with HF undergoing CRT implantation who were prospectively enrolled. Response to CRT was defined as a combination of ≥15% reduction in left ventricular end-systolic volume (LVESV) and ≥10% improvement in the 6‑Minute Walk Test within 6 months. Patients were grouped based on their levels of vitamin D prior to CRT implantation. Clinical and echocardiographic examinations were performed prior to and 6 months after the procedure. RESULTS: Of the patients, 11 (22%) failed to respond to CRT; two patients died within 6 months and an additional nine patients showed no improvement in the 6‑Minute Walk Test and no reduction in their baseline LVESV. A comparison was made between 25 patients with sufficient levels of vitamin D and 25 patients with insufficient levels. Nine patients (36%) in the "insufficient" group and two patients (8%) in the "sufficient" group failed to respond to CRT implantation (p = 0.037). CONCLUSION: Adequate serum concentrations of vitamin D play a significant role in improving the functional status of patients with systolic HF following CRT implantation. More... »

PAGES

147-154

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00059-017-4630-x

DOI

http://dx.doi.org/10.1007/s00059-017-4630-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1092133084

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/28993847


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40 schema:description BACKGROUND: Vitamin D deficiency has been associated with a poor outcome in patients with heart failure (HF). We examined the role of vitamin D in the response of HF patients to cardiac resynchronization therapy (CRT). METHODS: The study comprised 50 patients (30 men and 20 women) with HF undergoing CRT implantation who were prospectively enrolled. Response to CRT was defined as a combination of ≥15% reduction in left ventricular end-systolic volume (LVESV) and ≥10% improvement in the 6‑Minute Walk Test within 6 months. Patients were grouped based on their levels of vitamin D prior to CRT implantation. Clinical and echocardiographic examinations were performed prior to and 6 months after the procedure. RESULTS: Of the patients, 11 (22%) failed to respond to CRT; two patients died within 6 months and an additional nine patients showed no improvement in the 6‑Minute Walk Test and no reduction in their baseline LVESV. A comparison was made between 25 patients with sufficient levels of vitamin D and 25 patients with insufficient levels. Nine patients (36%) in the "insufficient" group and two patients (8%) in the "sufficient" group failed to respond to CRT implantation (p = 0.037). CONCLUSION: Adequate serum concentrations of vitamin D play a significant role in improving the functional status of patients with systolic HF following CRT implantation.
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