Exploring the relationship between β-adrenergic receptor kinase-1 and physical symptoms in heart failure.
Quin E Denfeld, James O Mudd, Wohaib Hasan and 4 others
PMID 29803296WHAT IT FOUND
Among adults with heart failure, higher plasma betaARK1 was linked to worse patient-reported symptoms.
The link remained after accounting for clinical factors, and symptoms did not always follow standard risk scores.
Key findings
01Plasma betaARK1 was independently associated with physical symptom scores after adjusting for clinical characteristics (beta = 0.22 plus or minus 0.10, p = 0.038).
02The combination of plasma betaARK1 and clinical characteristics explained 25.0% of the variance in physical symptom scores.
03Plasma betaARK1 and Seattle Heart Failure Model scores interacted in predicting physical symptom scores (beta = -0.42 plus or minus 0.09, p < 0.001).
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The analysis was cross-sectional, so it cannot show whether higher betaARK1 came before worse symptoms or followed them. The sample was 94 adults, mostly non-Hispanic Caucasian, mostly male, and mostly non-ischemic with NYHA class III or IV heart failure, so it may not apply to older, more diverse, or ischemic heart failure patients. The study combined two groups of heart failure patients, but the authors say it may not have captured the full range of symptom patterns in heart failure.
Declared interests
The authors declared no conflicting interests. The article is listed as supported by NIH extramural and non-U.S. government research support.
The easy way to misread this
Do not read this as proof that betaARK1 causes heart failure symptoms or that clinicians should use it to guide care. The study was cross-sectional and did not test whether changing betaARK1 changes symptoms.