Abstract
Purpose
Obstructive sleep apnea (OSA) is common among patients with chronic kidney disease (CKD) and end-stage renal disease (ESRD). Home sleep testing is used to diagnose OSA in many studies investigating sleep-disordered breathing in this population. However, failure to successfully complete the test is a significant source of participant exclusion from research studies and delayed diagnosis in clinical practice. The objective of the study was to identify potential factors impeding acceptance and successful completion of home sleep testing in patients with kidney disease.
Methods
Four hundred and nineteen patients were recruited from nephrology clinics and dialysis units. Following completion of a sleep and medical history questionnaire, all patients were invited to perform a single night, home sleep study. Acceptance or refusal of the test was noted, as well as the success of the sleep study, as determined by a review of the raw data by a sleep medicine physician.
Results
Male gender (OR = 1.61, CI = 1.02–2.53), hypertension (OR = 2.01, CI = 1.17–3.45), and snoring (OR = 1.75, CI = 1.11-2.77) were associated with sleep test acceptance. Older patients were less likely to accept the test (OR = 0.48, CI = 0.30–0.76). Diabetics were less likely to complete the sleep test successfully (OR = 0.28, CI = 0.12–0.66).
Conclusions
Advanced age is an important factor in test refusal and complications of diabetes contributes to test failure. Symptom matching may be a source of selection bias, as patients with risk factors for OSA are more likely to accept the diagnostic test.
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Abbreviations
- OSA:
-
Obstructive sleep apnea
- CKD:
-
Chronic kidney disease
- ESRD:
-
End-stage renal disease
- PSG:
-
Polysomnography
- HTN:
-
Hypertension
- CAD:
-
Coronary artery disease
- CHF:
-
Congestive heart failure
- CVD:
-
Cerebrovascular disease
- COPD:
-
Chronic obstructive pulmonary disease
- ESS:
-
Epworth Sleepiness Scale
- PSQI:
-
Pittsburgh Sleep Quality Index
- ANC:
-
Adjusted neck circumference
- GIS:
-
Geographic information system
- eGFR:
-
Estimated glomerular filtration rate
- CKD-EPI:
-
Chronic Kidney Disease Epidemiology Collaboration
- RSR:
-
Remmers Sleep Recorder
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Acknowledgments
The authors thank the Southern Alberta Renal Program for patient recruitment, as well as Ms. Patty Nielsen and Ms. Leah Howson for their clerical assistance. This research was supported by Alberta Innovates—Health Solutions, and the University of Calgary, Faculty of Medicine Sleep Research Program.
Ethical standards
The study was approved by the University of Calgary Conjoint Health Research Ethics Board. Written informed consent was obtained from all participants in accordance with the Declaration of Helsinki.
Conflict of interest
The authors declare that they have no conflict of interest.
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Lee, J., Turin, T.C., Nicholl, D.D.M. et al. Predictors of successful completion of diagnostic home sleep testing in patients with chronic kidney disease. Sleep Breath 19, 669–675 (2015). https://doi.org/10.1007/s11325-014-1074-x
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DOI: https://doi.org/10.1007/s11325-014-1074-x