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PubMed2006

The prognostic value of simulated snoring in awake patients with suspected sleep-disordered breathing: introduction of a new technique of examination.

STUDY OBJECTIVE: A clinical examination of the upper airway in patients with suspected sleep-disordered breathing (SDB) is frequently performed before nighttime polysomnography. In recent years, the findings of "static" examinations, such as dorsalization of the tongue base, the Malampatti index, and Mueller maneuver, have been determined to be of low predictive value. DESIGN: We developed a new method of "dynamic" examination of the upper airway during simulated snoring in awake patients and analyzed the method in terms of the predictive value for suspected SDB. SETTING: N/A PATIENTS: One hundred thirty-one patients were examined prior to night-time polysomnography, and the results were correlated with the apneahypopnea-index (AHI). INTERVENTIONS: N/A RESULTS: A significant correlation was detected between an increased dorsal movement of the tongue base, as well as with pharyngeal collapse at the level of the tongue base and the AHI. Pharyngeal collapse at the level of the velum did not correlate with the AHI. The patient's body position during simulated snoring did not influence the results. The "static" examinations, such as the dorsalization of the tongue base, tonsil size, Malampatti index, and Mueller maneuver, did not correlate with the AHI. Patients with a high degree of pharyngeal collapse at the level of the tongue base, in combination with dorsal movement of the tongue base during simulated snoring, revealed a probability of 75% to have an AHI more than 10 and of 92% for an AHI more than 5. CONCLUSION: The "dynamic" examination of the upper airway under simulated snoring in awake patients is an easy-to-perform method to predict the probability of SDB prior to nighttime polysomnography.

Endoscopy↗
PubMed1998

Identification of obstructive sleep apnea in patients who snore.

As the field of sleep medicine has evolved, the clinical implications of obstructive sleep apnea (OSA) in snoring patients have become well accepted. Recent advances in surgical therapy for snoring allow otolaryngologists to offer simple outpatient treatment to patients with this problem. However, because the incidence of OSA in snorers seeking medical attention is unknown, the appropriate pretreatment evaluation of these patients is a subject of continued debate. Ninety-four snoring patients were recruited for a study to determine the incidence of OSA in this highly selected population. Subjects answered an extensive sleep questionnaire to determine factors that might suggest a diagnosis of OSA. Level III ambulatory sleep studies were performed on each participant. The incidence of OSA in this group was 72% (42% severe and 30% mild to moderate). Twenty of the subjects with OSA also underwent formal level I sleep studies, and the diagnosis of OSA was confirmed in each instance. Although there was a relationship between body mass index and OSA and certain questions correlated with OSA, the sensitivity and specificity of these data alone or in combination were too low to recommend their use in lieu of a formal sleep study. Given the remarkably high incidence of OSA in this group, which may reflect that seen by otolaryngologists who treat snoring, a sleep study should be performed to diagnose OSA and institute therapy for this condition. Level III ambulatory monitoring devices may be the most cost-effective alternative for evaluating this high-risk population.

Adult↗
PubMed1995

Mucosal-strip/uvulectomy by the CO2 laser as a method of treating simple snoring.

The effect of stiffening the soft palate by inducing scarring after removing a central strip of mucosa with a CO2 laser was investigated in 25 heavy snorers. The results were assessed using a series of Visual Analogue Score (VAS) assessment questionnaires completed by the partner over a period of 6 months. Of the 22 patients who had the laser-strip and uvulectomy, snoring improved in 18 (82%) (median improvement of 75% at 3 months). Four patients did not improve. Between 3 and 6 months, snoring increased in one patient and decreased in four (< 10% change on VAS). Snoring did not improve in the three patients who did not undergo uvulectomy. We conclude that the laser-strip/uvulectomy can reduce snoring to a tolerable level in eight out of 10 heavy snorers, but the procedure is painful for several days.

Adult↗
PubMed1995

Daytime sleepiness, snoring and gastro-oesophageal reflux amongst young adults in three European countries.

OBJECTIVES: To study the geographical variation in daytime sleepiness, snoring and disrupted breathing during sleep and to identify and compare risk factors using the same method in four European cities. DESIGN: A cross-sectional, multicentre epidemiological survey. SETTING: Reykjavik in Iceland, Uppsala and Göteborg in Sweden and Antwerp in Belgium. PARTICIPANTS: A random population sample of 2202 subjects who participated in the European Community Respiratory Health Survey. MAIN OUTCOME MEASURES: Sleep disturbances and daytime symptoms. RESULTS: At all the centres, 5% of the men and 2-3% of the women reported snoring every night. Daytime sleepiness (DS) was more often reported in Uppsala [odds ratio (OR) and 95% confidence interval: 1.6 (1.2-2.1)] than in the other centres, whilst daytime tiredness (DT) was most common in Reykjavik [ OR 1.8 (1.4-2.1)]. Snoring was positively correlated with age, male gender and body-mass index in all areas. Symptoms of gastro-oesophageal reflux were associated with DS: OR 2.6 (1.5 4.4) and DT: OR 4.5 (2.7-7.6) and disrupted breathing: OR 3.8 (1.4-10). DS and DT were reported more often by women than by men. CONCLUSION: The prevalence of snoring was about the same in all four areas, whilst there was a geographical variation in daytime sleepiness and tiredness. As complaints of DS and DT and disrupted breathing were more common in subjects who reported symptoms of gastro-oesophageal reflux, we suggest that polysomnographic studies comparing sleep patterns in adult patients with and without reflux should be conducted.

Adult↗
PubMed2004

Snoring and its association with asthma in Indigenous children living in the Torres Strait and Northern Peninsula Area.

OBJECTIVE: Respiratory health of Indigenous and minority ethnic groups in affluent countries is poorer than their non-minority counterparts and sleep disorders are no exception. In children, obstructive sleep apnoea has the potential to result in serious long-term consequences. In 1999, we studied 1650 children and adolescents living in the Torres Strait and the Northern Peninsula Area, Australia. Here we report prevalence of snoring in these communities and relate its association with asthma symptoms. METHODS: A population-based cross-sectional study was conducted in the Torres Strait region. Five indigenous communities were randomly selected and information was collected using a structured face-to-face interview based on a standardized questionnaire. There was a 98% response rate, and 1650 children, 0-17 years of age, were included in the study. RESULTS: Overall, the prevalence of snoring was 14.2% (95% CI 12.5-15.9); 3.6% (95% CI 2.7-4.6) reported snorting, and 6% (95% CI 4.9-7.2) reported restless sleep. The prevalence of snoring was significantly higher among males (17.1% for males and 10.8 for females, P = 0.005). Children were five times more likely to have experienced snoring and snorting if they reported wheezing in the last 12 months. CONCLUSION: We conclude that the prevalence of symptoms suggestive of obstructive sleep problems is relatively high in children of this region. This highlights the need for awareness among the community patients and physicians about the problem of obstructive sleep-disordered breathing, especially in children with asthma, and for the need for further studies to measure prevalence of sleep breathing disorders among Indigenous Australians.

Adolescent↗
PubMed1993

Snoring, sleep disturbance, and behaviour in 4-5 year olds.

Parents of 996 children aged 4-5 years identified consecutively from the Oxford health visitor register were asked to complete a questionnaire about breathing disorders during sleep. A total of 782 (78.5%) was returned. Ninety five (12.1%) children were reported to snore on most nights. Habitual snoring was significantly associated with daytime sleepiness, restless sleep, and hyperactivity. The questionnaire responses were used to select two subgroups, one at high risk of a sleep and breathing disorder and a control group. These children (132 in total) were monitored at home with overnight video recording and oximetry, and had formal behavioural assessment using the Conners scale. Seven (7/66) children from the high risk group and none from the control group had obvious sleep disturbance consequent on snoring and upper airway obstruction. Thus our estimate of the prevalence of sleep and breathing disorders in this age group is 7/996 or 0.7%. The high risk group had significantly higher nocturnal movement, oxygen saturation dip rates, and overnight pulse rates than the controls. Maternal but not paternal smoking was associated with the high risk group. Parents and teachers thought those in the high risk group were more hyperactive and inattentive than the controls, but only their parents thought them more aggressive. Significant sleep and breathing disorders occur in about 0.7% of 4-5 year olds. Children whose parents report snoring and sleep disturbance have objective evidence of sleep disruption and show more behaviour problems than controls.

Child, Preschool↗
PubMed1987

Snoring as a risk factor for ischaemic heart disease and stroke in men.

The association of snoring with ischaemic heart disease and stroke was studied prospectively in 4388 men aged 40-69. The men were asked, in a questionnaire sent to them, whether they snored habitually, frequently, occasionally, or never. Hospital records and death certificates were checked for the next three years to establish how many of the men developed ischaemic heart disease or stroke: the numbers were 149 and 42, respectively. Three categories of snoring were used for analysis: habitual and frequent snorers (n = 1294), occasional snorers (n = 2614), and non-snorers (n = 480). The age adjusted relative risk of ischaemic heart disease between habitual plus frequent snorers and non-snorers was 1.91 (p less than 0.01) and for ischaemic heart disease or stroke, or both, 2.38 (p less than 0.001). There were no cases of stroke among the non-snorers. Adjustment for age, body mass index, history of hypertension, smoking, and alcohol use did not significantly decrease the relative risks, which were 1.71 (p greater than 0.05) for ischaemic heart disease and 2.08 (p less than 0.01) for ischaemic heart disease and stroke combined. At the beginning of follow up in 1981, 462 men reported a history of angina pectoris or myocardial infarction. For them the relative risk of ischaemic heart disease between habitual plus frequent snorers and non-snorers was 1.30 (NS); for men without previous ischaemic heart disease 2.72 (p less than 0.05). Snoring seems to be a potential determinant of risk of ischaemic heart disease and stroke.

Adult↗
PubMed1997

Snoring and breathing pauses during sleep: telephone interview survey of a United Kingdom population sample.

OBJECTIVES: To determine the prevalence of snoring, breathing pauses during sleep, and obstructive sleep apnoea syndrome and determine the relation between these events and sociodemographic variables, other health problems, driving accidents, and consumption of healthcare resources. DESIGN: Telephone interview survey directed by a previously validated computerised system (Sleep-Eval). SETTING: United Kingdom. SUBJECTS: 2894 women and 2078 men aged 15-100 years who formed a representative sample of the non-institutionalised population. MAIN OUTCOME MEASURES: Interview responses. RESULTS: Forty per cent of the population reported snoring regularly and 3.8% reported breathing pauses during sleep. Regular snoring was significantly associated with male sex, age 25 or more, obesity, daytime sleepiness or naps, night time awakenings, consuming large amounts of caffeine, and smoking. Breathing pauses during sleep were significantly associated with obstructive airways or thyroid disease, male sex, age 35-44 years, consumption of anxiety reducing drugs, complaints of non-restorative sleep, and consultation with a doctor in the past year. The two breathing symptoms were also significantly associated with drowsiness while driving. Based on minimal criteria of the International classification of Sleep Disorders (1990), 1.9% of the sample had obstructive sleep apnoea syndrome. In the 35-64 year age group 1.5% of women (95% confidence interval 0.8% to 2.2%) and 3.5% of men (2.4% to 4.6%) had obstructive sleep apnoea syndrome. CONCLUSIONS: Disordered breathing during sleep is widely underdiagnosed in the United Kingdom. The condition is linked to increased use of medical resources and a greater risk of daytime sleepiness, which augments the risk of accidents. Doctors should ask patients and bed partners regularly about snoring and breathing pauses during sleep.

Accidents, Traffic↗
PubMed1999

The treatment of snoring in the armed forces.

Snoring is a common problem, which may have widespread medical and social implications. This is particularly true in the setting of the armed forces where snoring may have significant effects in terms of personal performance, social interaction and security. This paper discusses the general management of snoring in the military environment and in particular the clinical effectiveness of one surgical procedure, uvulopalatopharyngoplasty. In this study, the procedure proves to be an effective surgical option in the management of snoring.

Adult↗
PubMed1994

Non-invasive beat to beat arterial blood pressure during non-REM sleep in obstructive sleep apnoea and snoring.

BACKGROUND: Obstructive sleep apnoea, and possibly snoring, are associated with a poorly understood increase in cardiovascular mortality which may be explained by their effects on systemic blood pressure during sleep. This study compares changes in mean blood pressure during obstructive sleep apnoea and snoring without apnoeas with those in matched control subjects during non-REM sleep. METHODS: Eighteen men with obstructive sleep apnoea, 16 men who snored without apnoeas, and 34 control subjects matched for age, sex, obesity, smoking, and alcohol intake were studied. During polysomnography non-invasive mean blood pressure (Finapres) was recorded from each cardiac cycle during non-REM sleep and averaged over a 10 minute period. This was compared with the blood pressure during 10 minutes before sleep onset. The changes in the patients' sleeping blood pressure were compared with those in their individually matched control subjects. RESULTS: Compared with the control subjects the change in mean (SD) arterial blood pressure between being awake and asleep was higher during obstructive sleep apnoea (+6.5 (9) mm Hg v-2 (6.5), difference 8.5 (11)), and the rise from wakefulness to sleep in the obstructive sleep apnoea group was itself significant. The average mean arterial pressure was not raised in those who snored without apnoeas compared with either the control subjects or during wakefulness. CONCLUSIONS: Average mean arterial pressure is higher during obstructive sleep apnoea than it is during wakefulness, while normal subjects show a fall in blood pressure at sleep onset. This sleep related rise in blood pressure may contribute to the excess cardiovascular morbidity and mortality experienced by patients with this condition.

Blood Pressure↗
PubMed2006

Comparison of uvulopalatopharyngoplasty, laser-assisted uvulopalatoplasty and cautery-assisted uvulopalatoplasty in the treatment of primary snoring.

OBJECTIVE: Our aim was to compare the postoperative pain and surgical results of uvulopalatopharyngoplasty (UPPP), laser-assisted uvulopalatoplasty (LAUP), and cautery-assisted uvulopalatoplasty (CAUP) procedures in the treatment of primary snoring. METHODS: 54 patients were stratified according to a modified Friedman staging system (MFSS) for sleep-disordered breathing. Tonsil size (1, 2, 3) and palatal position scale (grade 1-2) and body mass index <30 according to the MFSS were included for standardization. Three workgroups consisting of 18 patients each were formed and UPPP, LAUP and CAUP procedures were performed. The success of the surgical procedures was evaluated by applying the Epworth Sleepiness Scale to the patients, and the patients' bed partners were asked to evaluate the snoring level preoperative and 45 days after the operation to determine any improvement in snoring complaints. Patients were followed for postoperative pain, secondary infection, bleeding, permanent velopharyngeal insufficiency and nasopharyngeal stenosis. RESULTS: Snoring was relieved in 83.3% of UPPP and CAUP groups and in 88.8% of LAUP 45 days after operation. The mean pain duration was 5.71 days for the UPPP patients, 6.28 days for the LAUP patients and, 4.12 days for the CAUP patients. The mean pain score was 2.1 for the UPPP patients, 2.38 for the LAUP patients, and 1.6 for the CAUP patients. Only 1 patient was hospitalized due to pain in the LAUP group. CONCLUSION: The effectiveness of UPPP, LAUP and CAUP procedures were found to be similar (more than 83%). Postoperative pain was mostly seen in LAUP and UPPP cases. The CAUP procedure was easy and the least painful.

Adult↗
PubMed1989

Evaluation of a new 'anti-snoring device'.

A new 'antisnoring device' based on the principle to induce a conditioned response was evaluated in 8 patients with habitual snoring. When patients snore the device starts to vibrate, making the snorers turn to the side position. Out of the 8 patients, 4 definite responders were identified. In these individuals the cumulative overnight sound produced above 40 dBA was clearly reduced. Moreover, these patients reported decreased daytime hypersomnolence but no change in sleep quality after using the antisnoring device for 4 weeks. Sleep staging did not reveal any significant changes in sleep architecture. However, two patients in the responder group were found to have increased rapid eye movement sleep time and time spent in stage 3 and 4, respectively. No changes in oxygen saturation were found in the responder or the nonresponder groups. The results indicate that the anti-snoring device may be useful to decrease snoring and to improve sleep in a subgroup of habitual snorers. The data do, however, not provide further information on the characteristics of this subgroup.

Adult↗
PubMed2003

Long-term results of radiofrequency volumetric tissue reduction of the palate for snoring.

To assess the long-term efficacy and morbidity of radiofrequency volumetric tissue reduction (RFVTR) of the soft palate for snoring, we examined the medical records of 39 patients who received this treatment at an academic medical center. Telephone interviews were conducted with the patients to evaluate the long-term subjective efficacy and sequelae. The average follow-up was 14 months (range, 3 to 26 months). Twenty-eight patients (72%) responded to treatment, defined as a 4-point decrease on a 10-point scale. The self-reported snoring score decreased an average of 52% (8.8 +/- 1.9 to 4.2 +/- 2.9). Sixty-seven percent of the patients were satisfied. The response to treatment did not always correlate with patient satisfaction. The snoring relapse rate was 11% among responders. No significant differences were identified between responders and nonresponders. No significant complications or long-term sequelae were observed. We conclude that RFVTR of the palate is a relatively safe and effective long-term treatment for snoring. Defining realistic pretreatment expectations is important in maximizing patient satisfaction.

Case-Control Studies↗
PubMed1998

Systematic analysis of snoring in women.

Nineteen percent of women are habitual snorers, yet most snoring studies report only on male snorers. The aim of this study was to identify the factors responsible for habitual snoring in women. Twenty-four snorers and 16 controls were studied prospectively in a special snoring clinic. Snorers were shorter (p = .005) and heavier (p = .001), and with greater body mass index (BMI: p < .001), collar size (p = .002), and submental skinfold thickness (p = .001) than controls. The area of the posterior pharyngeal wall visible on oral examination was smaller in snorers (p = .005). Acoustic rhinometry areas and volumes were similar in the two groups. Nasal flow-volume loops showed reduced expiratory (p = .01) and inspiratory (p = .07) flow in snorers. Inspiratory flow correlated inversely with nasal symptoms (p < .05). The factors that best predict habitual snoring in women are a high BMI, a high nasal symptom score, and heavy weight. Of these, BMI is the most powerful.

Adolescent↗
PubMed1986

Snoring: clinical implications and treatment.

Snoring has only recently come under wide study. Recent research has established the close relationship of severe snoring to sleep apnea in terms of the obstructive pathophysiology. Snoring tends to increase in severity over time and may progress to sleep apnea. Severe snoring may be associated with pulmonary and systemic hypertension, secondary polycythemia, and cardiac arrhythmias.

Female↗
PubMed1998

Prevalence of snoring and sleep breathing-related disorders in Chinese, Malay and Indian adults in Singapore.

This study investigated the prevalence of snoring and symptoms of sleep breathing-related disorders in the multi-ethnic population of Singapore (3 million people, comprising 75% Chinese, 15% Malay and 7% Indian). A multistaged, area cluster, disproportionate stratified, random sampling of adults aged 20-74 yrs was used to obtain a sample of 2,298 subjects (65% response), with approximately equal numbers of Chinese, Malay and Indian and in each 10 yr age group. An interviewer-administered field questionnaire was used to record symptoms of snoring and breathing disturbances during sleep witnessed by a room-mate and other personal and health-related data. The weighted point estimate (and 95% confidence interval) of the whole population prevalence of snoring was 6.8% (53-83). There were pronounced ethnic differences among Chinese, 6.2% (4.4-8.1); Malay, 8.1% (6.1-10.2) and Indian, 10.9% (85-13.4). The minimum whole population prevalence by the most restricted symptom criteria for defining sleep breathing-related disorder was 0.43% (0.05-0.8%). Similar marked ethnic differences in rates were observed using various symptom criteria. The ethnic differences in sleep breathing symptoms paralleled the differences in body mass index, neck circumference and hypertension, but statistically significant differences remained after adjustment for sex, age and these known associated factors. Marked ethnic differences in snoring and sleep breathing-related disorders were observed in Chinese, Malays and Indians in Singapore, which were only partly explained by known factors of sex, age and body habitus.

Adult↗
PubMed2001

Long-term results of laser-assisted uvulopalatoplasty for snoring.

We present the ongoing results of the series of 53 consecutive patients who underwent laser-assisted uvulopalatoplasty (LAUP) for snoring at the Kent and Canterbury Hospital. Twenty-nine patients (55 per cent) were completely satisfied with their surgery 18 to 24 months following LAUP when previously questioned via telephone questionnaire. We have followed up the 29 patients with a previously successful result at between 70 and 79 months following surgery. They underwent an average of 1.6 procedures. Twelve patients (22 per cent) continue to be completely satisfied at this late stage, and a further 12 (22 per cent) have some ongoing improvement in their snoring. Only three patients have indicated that a previously successful result has failed since the previous survey. The failure rate of LAUP in the treatment of snoring is seen predominantly in the first two years following surgery, but some long-term subjective recurrence of snoring does occur.

Adult↗
PubMed1990

The surgical treatment of snoring: a patient's perspective.

An increasing number of loud snorers seek medical attention because of the social impact of snoring as well as its association with sleep apnea. Uvulopalatopharyngoplasty is reported to reduce or eliminate snoring in the majority of patients; however, little data are available to document the procedure's success. From February 1987 through August 1988, 125 patients underwent uvulopalatopharyngoplasty for habitual snoring; many of these patients had also documented sleep apnea. Of the 74 patients who responded to a postoperative questionnaire, 64 (86.48%) indicated that their snoring was either completely eliminated or markedly reduced. Only two patients reported significant side effects.

Adult↗