A Community Study of Sleep-Disordered Breathing in Middle-aged Chinese Men in Hong Kong

Ip, Mary S.M.; Lam, Bing; Lauder, I.; Tsang, Kenneth W.; Chung, Ka Fai; Mok, Yuk-wan; Lam, Wah‐Kit

doi:10.1378/chest.119.1.62

Cited by 369 publications

(293 citation statements)

References 25 publications

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“…7 The prevalence of SDB (apnea-hypopnea index (AHI), X15) was 9-14% for western adult men [8][9][10] and 5-10% for their Asian counterparts. 11,12 We previously reported that SDB was positively associated with overweight and excessive daytime sleepiness among Japanese adults. 13,14 To date, however, no data have been available on the association of weight change with SDB and excessive daytime sleepiness for Asian populations.…”

Section: Introductionmentioning

confidence: 96%

Associations between weight change since 20 years of age and sleep-disordered breathing among male truck drivers

et al. 2009

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Background: Limited evidence for association of weight gain with sleep-disordered breathing (SDB) has been produced for Asian populations whose body mass index (BMI) levels are lower than in western countries. Objective: The aim of this study was to examine weight change since 20 years of age and risk of SDB among Japanese. Design: Retrospective cohort study. Subjects: This study includes a large sample of 5320 male Japanese truck drivers aged 30-69 years. Measurements: The respiratory disturbance index (RDI) was selected as an indicator of SDB, and it was estimated with a onenight sleep test using an airflow monitor, and the Epworth Sleepiness Scale (ESS) was used to estimate excessive daytime sleepiness. Results: Respiratory disturbance and sleepiness were more prevalent among men with BMI of 25.0-29.9 and X30.0 kg/m 2 than among those with BMI of 18.5-24.9; multivariable odds ratios (ORs) were 1.8(1.5-2.0), Po0.001 and 4.4(3.5-5.5), Po0.001 for RDI X10, and 1.2(0.9-1.4), P ¼ 0.18 and 1.5(1.1-2.1), P ¼ 0.02 for ESS X11, respectively. Compared with men showing BMI changes within ± 1.0, the respective multivariable ORs for those with BMI changes of 3.0-4.9 and X5.0 were 1.4(1.2-1.6), Po0.001 and 2.4(2.0-2.9), Po0.001 for RDI X10, and 1.2(0.9-1.6), P ¼ 0.22 and 2.0(1.5-2.6), Po0.001 for ESS X11. The corresponding ORs for weight gain of X10.0 kg compared with weight change less than ± 5.0 kg were 2.0(1.7-2.4), Po0.001 for RDI X10 and 1.5(1.2-2.0), P ¼ 0.002 for ESS X11. Similar trends were observed for RDI X20. Conclusion: Our results suggest that an increase in BMI of X5 kg/m 2 or weight gain of X10 kg is a risk factor for SDB and excessive daytime sleepiness among Japanese truck drivers.

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Section: Introductionmentioning

confidence: 96%

Associations between weight change since 20 years of age and sleep-disordered breathing among male truck drivers

et al. 2009

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“…S leep apnea has been reported in up to 50% to 70% of patients with end-stage renal disease (ESRD) (1), a value at least 10 times higher than the prevalence reported in the general population (2)(3)(4). The pathogenesis of sleep apnea in patients with ESRD remains unclear.…”

mentioning

confidence: 99%

Improvement in Sleep Apnea during Nocturnal Peritoneal Dialysis Is Associated with Reduced Airway Congestion and Better Uremic Clearance

Tang¹,

Lam²,

Lai³

et al. 2009

Clinical Journal of the American Society of Nephrology

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110

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Background and objectives: Among peritoneal dialysis (PD) patients, nocturnal PD (NPD) is known to improve sleep apnea compared with continuous ambulatory peritoneal dialysis (CAPD), but the contributing factors are unclear.Design, setting, participants, and measurements: Thirty-eight incident ESRD patients underwent overnight polysomnography (PSG) during NPD and CAPD. Bioelectrical impedance analysis, magnetic resonance imaging of the upper airway, and urea kinetics (Kt/V) during sleep were measured on both occasions.Results: The prevalence of severe sleep apnea (apnea-hypopnea index, AHI > 15/h) was 21.1% during NPD, and 42.1% during CAPD. Mean AHI increased from 9.6 ؎ 2.7/h during NPD to 21.5 ؎ 4.2/h during CAPD. Both obstructive and central apnea worsened after conversion to CAPD. NPD achieved greater reductions in total body water, hydration fraction, and net ultrafiltration than CAPD during sleep. Overnight peritoneal Kt/V and creatinine clearance were lower after conversion. Both peritoneal Kt/V and peritoneal creatinine clearance correlated with AHI, as did their changes after conversion. Volumetric magnetic resonance imaging revealed reduced pharyngeal volumes and cross-sectional area, and tongue enlargement after conversion.Conclusions: Improvement in sleep apnea during NPD versus CAPD is associated with better fluid and uremic clearance and reduced upper airway congestion during sleep.

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“…In contrast, due to cultural and dietary aspects, Asians would be protected from OSA on the basis that obesity is less common than among white Americans. Previous independent epidemiological studies from Asia and the USA showed similar prevalence of OSA in these populations [3,4]. YAMAGISHI et al…”

mentioning

confidence: 72%

“…1) ''[The authors] arbitrarily divided Europe geographically into Northern, Central and Southern regions''. This division has been employed by several other surveys [3,4] and is therefore commonly accepted.…”

mentioning

confidence: 99%

To the Editors: Sleep apnoea in Asians and Caucasians: comparing apples and oranges

Genta¹,

Lorenzi-Filho²

2011

Eur Respir J

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A Community Study of Sleep-Disordered Breathing in Middle-aged Chinese Men in Hong Kong

Cited by 369 publications

References 25 publications

Associations between weight change since 20 years of age and sleep-disordered breathing among male truck drivers

Associations between weight change since 20 years of age and sleep-disordered breathing among male truck drivers

Improvement in Sleep Apnea during Nocturnal Peritoneal Dialysis Is Associated with Reduced Airway Congestion and Better Uremic Clearance

To the Editors: Sleep apnoea in Asians and Caucasians: comparing apples and oranges

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