Awareness Level of Obstructive Sleep Apnea Syndrome During Routine Unstructured Interviews of a Standardized Patient by Primary Care Physicians

Low socioeconomic status is a risk factor for CPAP acceptance among adult OSAS patients requiring treatment

STUDY OBJECTIVE

To evaluate whether socioeconomic status (SES) has a role in obstructive sleep apnea syndrome (OSAS) patients' decision to accept continuous positive airway pressure (CPAP) treatment.

DESIGN

Cross-sectional study; patients were recruited between March 2007 and December 2007.

SETTING

University-affiliated sleep laboratory.

PATIENTS

162 consecutive newly diagnosed (polysomnographically) adult OSAS patients who required CPAP underwent attendant titration and a 2-week adaptation period.

RESULTS

40% (n = 65) of patients who required CPAP therapy accepted this treatment. Patients accepting CPAP were older, had higher apnea-hypopnea index (AHI) and higher income level, and were more likely to sleep in a separate room than patients declining CPAP treatment. More patients who accepted treatment also reported receiving positive information about CPAP treatment from family or friends. Multiple logistic regression (after adjusting for age, body mass index, Epworth Sleepiness Scale, and AHI) revealed that CPAP purchase is determined by: each increased income level category (OR, 95% CI) (2.4; 1.2-4.6), age + 1 year (1.07; 1.01-1.1), AHI ( > or = 35 vs. < 35 events/hr) (4.2, 1.4-12.0), family and/or friends with positive experience of CPAP (2.9, 1.1-7.5), and partner sleeps separately (4.3, 1.4-13.3).

CONCLUSIONS

In addition to the already known determinants of CPAP acceptance, patients with low SES are less receptive to CPAP treatment than groups with higher SES. CPAP support and patient education programs should be better tailored for low SES people in order to increase patient treatment initiation and adherence.

Symptoms and risk of obstructive sleep apnea in primary care patients in Jordan

PURPOSE

Primary care is central for the diagnosis and treatment of obstructive sleep apnea (OSA). The aim of this study was to estimate the prevalence of symptoms and risk of OSA in primary care in Jordan.

METHODS

A cross-sectional survey was conducted between July and October 2006. Adult patients attending primary health care in the north of Jordan were included and the Berlin questionnaire was utilized.

RESULTS

A total of 1,205 patients completed the questionnaire, 46% were males, and mean age was 32.2 years. Based on the Berlin questionnaire definition, the overall OSA risk was 16.8%, snoring was present in 28.7% and frequent daytime fatigue or tiredness in 33.9%. OSA risk increased with age. For age groups <30 years, 30-59 years, and >or=60 years OSA risk was 5.4%, 28.4%, and 45.9%, respectively, (p < 0.005). OSA risk was higher in men than women (19.3% vs. 14.7%, respectively, p < 0.04). Age of >or=30 years, chronic nasal congestion and illiteracy were associated with an increased risk of OSA.

CONCLUSIONS

Obstructive sleep apnea, snoring, and daytime sleepiness were common among Jordanian patients attending primary care clinics. More attention to OSA is needed in primary care, and patients at risk should be referred for further evaluation.

[Efficacy of a training program on sleep apnea-hypopnea syndrome aimed at primary care physicians]

OBJECTIVE

The level of clinical suspicion of sleep apnea-hypopnea syndrome (SAHS) among primary care physicians is low. The aim of this study was to analyze the impact of a primary care training program on the quality and quantity of referrals made due to suspected SAHS.

MATERIAL AND METHODS

A group of 16 primary care physicians were offered the option of participating in a training program consisting of 2 talks-workshops, the provision of up-to-date information on SAHS and a form for making referrals according to an established protocol, and the opportunity to contact the sleep department at our hospital directly. Twenty-one primary care physicians who did not receive training served as the control group. We gathered data on the quantity and quality of referrals made by both groups for the period January through June 2005 and 2006, and recorded the number of both SAHS diagnoses made and patients prescribed treatment with continuous positive airway pressure. Data were analyzed in function of the primary care population assigned to each group.

RESULTS

The training program was completed by 81.3% of the physicians. The number of referrals made by the training group increased 2.38-fold after the program (intergroup comparison, P=.0001). There was also a 2.36-fold increase in the percentage of cases of SAHS detected in the population (P=.0008), a 1.85-fold increase in the percentage of serious cases detected (P=.001), and a 2-fold increase in the number of patients prescribed continuous positive airway pressure (P=.009). Agreement between the data gathered by the physicians and the sleep specialist was significantly higher in the training group for all the items studied.

CONCLUSIONS

The implementation of a training program on SAHS aimed at primary care physicians improved both the quantity and quality of referrals made due to suspected SAHS.

A diagnostic symptom profile for sleep disorder in primary care patients

OBJECTIVE

The aim of the present study was (1) to evaluate the extent and nature of sleep disorder-related symptoms in the older primary care patient population and (2) to differentiate a pattern of self-reported symptoms that identify patients who should be referred to the sleep clinic for further evaluation.

METHOD

One hundred ninety-six older adults recruited from family practice centers were administered a brief symptom survey measure. All were invited to participate in an extensive self-report evaluation, consultation with a sleep medicine specialist, and an overnight polysomnographic study.

RESULTS

A substantial number of older primary care patients report symptoms related directly or indirectly to physiological sleep disorder. Over 30% of total reported some insomnia, 40% daytime sleepiness, and 10% apnea. Those participants who agreed to pursue further aspects of the study protocol endorsed a higher number and greater severity of primary sleep disorder symptoms than those who declined to continue beyond the first phases. Participants who chose to pursue polysomnography (13% of total) had a very high rate (88.5) of diagnosed sleep disorder.

CONCLUSION

This study suggests that an older patient, male or female, who both endorses medically unexplained daytime sleepiness, fatigue, or other sleep disorder related symptoms and agrees to further evaluation, including overnight polysomnography, is at substantial risk for physiologically based sleep disorder. In the future, a brief, validated measure, such as the Sleep Symptom Checklist used in this study, would be an important part of the diagnostic process.

The effect of obstructive sleep apnea on morbidity and health care utilization of middle-aged and older adults

OBJECTIVES

To determine whether elderly subjects with obstructive sleep apnea (OSA) had different morbidity and health care utilization than elderly subjects without OSA and middle-aged patients with OSA 2 years before diagnosis.

DESIGN

Case-control study between January 2001 and April 2003.

SETTING

Two sleep-wake disorders centers.

PARTICIPANTS

One hundred fifty-eight elderly and 1,166 middle-aged (aged 67-89 and 40-64, respectively) patients with OSA were matched 1:1 with healthy controls according to age, sex, geographic area, and primary physician.

MEASUREMENTS

Polysomnography, medical diagnoses, and healthcare utilization.

RESULTS

Healthcare costs 2 years before diagnosis were more than 1.8 times as high for elderly and middle-aged patients with OSA as for controls (P<.001). Expenditures of elderly patients with OSA were 1.9 times as high as for middle-aged patients with OSA (P<.001). Multiple logistic regression analysis (adjusting for age, body mass index, and apnea hypopnea index) revealed that cardiovascular disease (CVD) (odds ratio (OR)=4.1, 95% confidence interval (CI)=1.8-9.3) and use of psychoactive drugs (OR=3.8, 95% CI=1.5-10.1) are independent determinants for the top-third most-costly elderly patients with OSA.

CONCLUSION

Elderly patients with OSA have high healthcare utilization because of CVD morbidity and use of psychoactive medications. Therefore, OSA has clinical significance in elderly people.

Sleep apnea in the elderly: a specific entity?

Sleep apnea is highly prevalent in subjects after age 60, and affects older men and women similarly. Central apneas are often observed in addition to obstructive and mixed events. Pathogenesis of obstructive and central events during sleep in the elderly can be attributed to an amplification of well-established causes of sleep-disordered breathing (SDB) in younger adults. As in middle-aged adults, sleep-related complaints, cardiovascular diseases, depression and traffic accidents should prompt an evaluation by a sleep specialist. However, secondary enuresis and nocturia, cognitive impairment, ophthalmic conditions and repeated falls may be the main complaint in elderly subjects. Sleep studies in the elderly should systematically include reliable means to detect central apneas and periodic leg movements. Untreated SDB in the elderly appears to have a lesser impact on mortality than in middle-aged adults. However, the typical morbidity associated with the disorder in younger adults is observed in the elderly. Elderly symptomatic SDB patients tolerate CPAP no differently than younger patients and should be effectively treated. In conclusion, whether sleep apnea in the elderly represents a specific entity or the same disease as in younger subjects, with some distinctive features, is still unclear. Further research, in particular focusing on the impact of age on SDB outcomes, is needed.

Elevated morbidity and health care use in children with obstructive sleep apnea syndrome

RATIONALE

Health care use, a reliable measure of morbidity, is noticeably higher 1 yr before obstructive sleep apnea syndrome (OSAS) diagnosis in preschool children. It is not clear at what age OSAS-related morbidity becomes expressed.

OBJECTIVE

To explore morbidity and health care use among children with OSAS starting from first year of life.

METHODS

Case-control study, starting from the first year of life to date of OSAS diagnosis, among 156 patients (age range, 3-5 yr) and their pair-matched healthy control subjects, by age, sex, primary care physician, and geographic location.

MEASUREMENTS

Patients with OSAS underwent nocturnal polysomnography studies. Medical records during hospital visits were reviewed for diagnosis. Variables of health care use were obtained from computerized databases of Clalit Health Care Services, the largest health maintenance organization in Israel.

MAIN RESULTS

From the first year of life to date of OSAS diagnosis, children with OSAS had 40% more (p = 0.048) hospital visits, 20% more repeated (two or more) visits (p < 0.0001), and higher consumption of antiinfective and respiratory system drugs (p < 0.0001). Referrals of children with OSAS to otolaryngology surgeons and pediatric pulmonologists were higher from Year 1 (p < 0.0001) to date of OSAS diagnosis, especially in Year 4 (odds ratio, 9.4; 95% confidence interval, 4.2-21.1). The 215% elevation (p < 0.0001) in health care use of the OSAS group was due mainly to higher occurrence of respiratory tract morbidity (p < 0.0001).

CONCLUSIONS

Practitioners should be aware that starting in Year 1 until date of diagnosis, children with OSAS have higher health care use, mostly related to respiratory diseases.

Low Socioeconomic Status Is a Risk Factor for Cardiovascular Disease Among Adult Obstructive Sleep Apnea Syndrome Patients Requiring Treatment

STUDY OBJECTIVE

To evaluate the possible role of low socioeconomic status (SES) as a risk factor for cardiovascular disease (CVD) among obstructive sleep apnea syndrome (OSAS) patients requiring treatment.

DESIGN

Polysomnographic and demographic characteristics and associated morbidity were measured in 686 prospectively recruited adult OSAS patients from two regions in Israel.

SETTING

Two university-affiliated sleep laboratories.

MEASUREMENTS AND RESULTS

The multiple logistic regression (after adjusting for gender, body mass index [BMI], and smoking) revealed that the following are independent determinants for CVD in OSAS patients requiring treatment: each decrease in income level category (odds ratio [OR], 1.4; 95% confidence interval [CI], 1.1 to 1.7), age > or = 1 year (OR, 1.07; 95% CI, 1.04 to 1.1), hypertension (OR, 2.0; 95% CI, 1.3 to 3.1), and hyperlipidemia (OR, 3.7; 95% CI, 2.4 to 5.8); area under the receiver operating characteristic (ROC) = 81.9%. The multivariate determinants describing the low-SES OSAS patients included: minorities and immigrants combined (OR, 6.0; 95% CI, 2.9 to 12), female gender (OR, 2.4; 95% CI, 1.6 to 3.9), increased BMI (OR, 1.9; 95% CI, 1.3 to 2.9), unmarried status (OR, 1.9; 95% CI, 1.2 to 3.1), and years of education (> or = 1 year) [OR, 0.8; 95% CI, 0.7 to 0.8]; area under the ROC = 78.1%.

CONCLUSION

In addition to the already known traditional risk factors, low SES was found to be a novel independent risk factor for CVD among adult OSAS patients requiring treatment.

Reviews: Diagnosis and Management of Sleep Apnea Syndrome and Restless Legs Syndrome in Dialysis Patients

Sleep complaints are very common in patients with end-stage renal disease (ESRD) and contribute to their impaired quality of life. Both obstructive and central sleep apnea syndromes are reported more often in patients on dialysis than in the general population. Impaired daytime functioning, sleepiness, and fatigue, as well as cognitive problems, are well known in patients with sleep apnea. Increasing evidence supports the pathophysiological role of sleep apnea in cardiovascular disorders, which are the leading cause of death in ESRD patients. Uremic factors may be involved in the pathogenesis of sleep apnea in this patient population and optimal dialysis may reduce disease severity. Furthermore, treatment with continuous positive airway pressure may improve quality of life and may help to manage hypertension in these patients. Secondary restless legs syndrome is highly prevalent in patients on maintenance dialysis. The pathophysiology of the disorder may also involve uremia-related factors, iron deficiency, and anemia, but genetic and lifestyle factors might also play a role. The treatment of restless legs syndrome involves various pharmacologic approaches and might be challenging in severe cases. In this article we review the diagnosis and treatment of sleep apnea and restless legs syndrome, with a focus on dialysis patients. We also briefly review current data regarding sleep problems after transplantation, since these studies may indirectly shed light on the possible pathophysiological role of uremia or dialysis in the etiology of sleep disorders. Considering the importance of sleep disorders, more awareness among professionals involved in the care of patients on dialysis is necessary. Appropriate management of sleep disorders could improve the quality of life and possibly even impact upon survival of renal patients.

Determinants Affecting Health-Care Utilization in Obstructive Sleep Apnea Syndrome Patients

STUDY OBJECTIVE

To investigate determinants of health-care utilization in patients with obstructive sleep apnea syndrome (OSAS).

DESIGN

Case-control prospective study with OSAS patients and a control group. We compared 218 patients with OSAS to those of age-, gender-, geographically-, and family physician-matched control subjects from the general population, matched 1:1 (chi2 = 0.999).

PARTICIPANTS

All participants were members of Clalit Health Care Services, a health maintenance organization in the southern region of Israel. All OSAS patients underwent nocturnal polysomnography studies. Indexes of health-care utilization 2 years prior to the polysomnography were analyzed.

MEASUREMENTS AND RESULTS

Health-care utilization was 1.7-fold higher (p < 0.001) in the OSAS patients due to more hospitalization days (p < 0.001), consultations (p < 0.001), and cost for drugs (p < 0.05), particularly those for the cardiovascular system. In comparison to men, women consumed significantly more health-care resources (p < 0.001). OSAS patients < or = 65 of age years consumed 2.2-fold more health-care resources than control subjects (p < 0.001). Polysomnography findings and OSAS severity and body mass index (BMI) did not predict health-care utilization, using multivariate logistic regression analysis. Age > 65 (odds ratio [OR], 2.2; p < 0.04) and female gender (OR, 2.0; p < 0.05) were the leading elements predicting the most costly OSAS patients. Arbitrarily dividing the OSAS group by cost of health-care utilization, the upper 25% (n = 55) of patients who were the "most costly" consumed sevenfold more health-care resources than the lower 75% of the patients. This was due to higher comorbidity, ie, 10 to 30% more hypertension, ischemic heart disease, diabetes mellitus, and pulmonary disease.

CONCLUSIONS

OSAS patients are heavy users of health-care resources. Age > 65 years and female gender were the leading elements predicting the most costly OSAS patients, and not necessarily patients with a high BMI and classic OSAS severity indexes.