Sleep disturbance in patients with an implantable cardioverter defibrillator: Prevalence, predictors and impact on health status.
M Habibović, L Mudde, S S Pedersen and 3 others
PMID 29260886WHAT IT FOUND
Sleep disturbance was not associated with poor perceived health one year after ICD implantation once mood, anxiety and personality were considered.
It was common: 67% reported sleep problems at baseline, and younger patients who often feel negative emotions were more likely to report it.
Key findings
01At baseline, 130 patients (67%) reported disturbed sleep at least several days per week.
02After adjustment, younger age and high negative affectivity with low social inhibition independently predicted disturbed sleep 12 months after implantation.
03Sleep disturbance was associated with worse perceived physical and mental health before psychological variables were added, but not after they were added.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The WEBCARE trial was not designed to study sleep patterns, so the sample may not represent all patients with an implantable cardioverter defibrillator. Only 37% of eligible patients were included, and patients who did not return baseline questionnaires or were excluded were younger and more likely to use psychotropic drugs, which may bias the findings. Sleep disturbance was measured with one Patient Health Questionnaire 9 item, so different sleep disorders could not be diagnosed and reliability of the sleep measure could not be assessed. The sample was relatively small, so the regression models could not adjust for all clinically relevant variables. The study did not test a sleep intervention, so it cannot show that treating sleep disturbance improves health status.
Declared interests
The authors declared no conflicts of interest. Funding came from a Netherlands Organization for Health Research and Development VIDI grant and the Dutch Heart Foundation.
The easy way to misread this
Do not conclude that treating sleep disturbance will improve perceived health after ICD implantation. The study found no independent association between sleep disturbance and health status after psychological variables were considered, and it did not test a sleep treatment.