We analyzed the role of sleep position in obstructive sleep apnea syndrome (OSAS). The polysomnograms of 120 patients with sleep apnea syndrome were analyzed. We associated the apnea hypopnea index (AHI) of the supine position with the AHI of the other positions. Patients were stratified in a group of positional patients (PP) (AHI supine >or= 2 x AHI other positions) and a group of non-positional patients (NPP). In 55.8% of our patients, OSAS was position dependent. PP patients were significantly (6.7 years) younger. BMI and AHI were higher in the NPP group, but the difference was not significant. Level of obstruction in the upper airway (retropalatinal vs retrolingual vs both levels) as assessed by sleep endoscopy was not significantly different between the two groups. Total sleep time (TST) was equal in both groups, but the average time in supine position was 37 min longer in the PP group. This study confirms the finding that in more than 50% of patients, OSAS is position dependent. Apart from age, no patient characteristics were found indicating the position dependency. Overall AHI does not identify positional OSAS.

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This study demonstrates that HTP, in particular as primary treatment in cases of obstruction at tongue base level, is a valuable addition to the therapeutic armamentarium of moderate to severe OSAS. Selection criteria are moderate to severe OSAS with preferably a body mass index less than 27, multilevel obstruction with emphasis on the base of tongue, small tonsils, and normal uvula, without a floppy epiglottis or a palatal stenosis after UPPP.

No positive correlation exists between a large tongue and obstruction at tongue base level. In both groups, retropalatal obstruction occurred more often than retrolingual obstruction. Sleep endoscopy provides qualitative insight into important changes during sleep in patients with SUS and OSAS. In addition, anatomic aberrations are clearly visualized in a dynamic setting. Classification of the size of the tongue, as assessed by the MMS, may be of great importance as well.

Sleep is an integral part of human existence and is now, more than ever, the subject of clinical and research interest. Why do we spend approximately one third of our lives asleep? Sleep probably has a recovery function, especially for the brain. Throughout rapid eye movement sleep, neuronal connections in the catecholamine system are created, and this activity is essential to maintain cognitive function.w1 During rapid eye movement sleep in particular, the body is at its most relaxed state, and a three dimensional collapse of muscle (musculus genioglossus and musculus geniohyoideus) and fatty tissue around the upper airway may cause obstruction.1 When a pre-existent narrowing and slackening of the upper airway is also present, 2 apnoeas (complete cessation of breathing for 10 seconds or more) or hypopnoeas ( > 50% diminishing of airflow or oxygen desaturations > 3% for 10 seconds or more) may result. The prevalence of obstructive sleep apnoea in middle age is 2% for women and 4% for men.3 In practice, obstructive sleep apnoea seems to be under-reported; obstructive sleep apnoea is undiagnosed in an estimated 80% of patients. 4 Patients with obstructive sleep apnoea are particularly vulnerable during anaesthesia and sedation. w2This is not only the case for operations or other invasive interventions aiming at alleviation of obstructive sleep apnoea through reduction of the obstructive upper airway; even after surgery not related to obstructive sleep apnoea, such as hip and knee operations, patients with obstructive sleep apnoea are at risk of developing respiratory and cardiopulmonary complications postoperatively. Serious complications include reintubations and cardiac events.6 Anaesthetic management must focus on and deal with the increased likelihood of morphological alterations of the upper airway leading to an increased rate of difficulties in securing and maintaining a patent airway. 7In this review we discuss the various anaesthetic aspects of obstructive sleep apnoea, including preoperative, perioperative, and postoperative points of special interest. We also cover the various management options.

We evaluated the surgical results of a one tempo multilevel surgical approach of the upper airway to treat patients with obstructive sleep apnea syndrome (OSAS) in a prospective case series. Twenty-two patients with OSAS and obstruction at both palatinal and tongue base level, as assessed by sleep endoscopy, underwent UPPP, RFTB, HS with or without GA in one operative session. The mean apnea hypopnea index (AHI) decreased from 48.7 (range 17.4-100.9) to 28.8 (P < 0.0001). The success rate (AHI <20 and >50% reduction in AHI) was 45%, the response rate (reduction in AHI of 20-50%) was 27%. The overall response rate was 72%. The success rates of patients with an AHI <55 and >55 were 56 and 0%, respectively. The overall response rate of patients with an AHI <55 was 78% and >55 was 50%. Improvement of desaturation index was significant from 31.9 to 17.6 (P < 0.0001). Visual analogue scales for snoring and hypersomnolence and the Epworth Sleepiness Scores showed significant improvements too (all P < 0.0001). There was no difference in objective and subjective outcomes between the group with and without GA. This study demonstrates that one stage multilevel surgery, in which genioglossus advancement is not of additional value, is a valuable addition to the therapeutic armentarium and can be considered a viable alternative, objective as well as subjective, to NCPAP or as primary treatment in well selected patients with moderate to severe OSAS with an AHI <55.

We assessed adverse events and complications of bipolar radiofrequency induced thermotherapy of the tongue base (RFTB) in patients with socially unacceptable snoring (SUS) or obstructive sleep apnea syndrome (OSAS) and determine its acceptance and effectiveness when conducted under local anesthesia. This investigation consisted of (1) a prospective, open-enrollment study of 24 consecutive patients with snoring and OSAS at the tongue base level only (Fujita III), assessed by sleep endoscopy. Polysomnography, questionnaires, and visual analog scales (VAS) were used to assess outcome. (2) In addition, a retrospective review of 83 patients, who underwent RFTB (in 59 cases as part of a multilevel treatment), was performed to evaluate adverse events and complications. Twenty-two of the 24 patients completed postoperative questionnaires and VAS, and ten patients had postoperative polysomnography. Reduction in snoring (P = 0.0003), hypersomnolence (P = 0.002), and globus (P = 0.031) was significant. A positive trend in AHI (P = 0.001, n = 3) is shown in patients with moderate to severe OSAS. Concerning postoperative adverse events and complications, only two patients had a mild and transient tongue deviation directly after the procedure, which resolved within an hour postoperatively (adverse event rate 1.8%). No postoperative complications such as infections, abscesses, hematomas, or ulcerations of the tongue base occurred. This study demonstrates that bipolar RFTB in patients with obstruction at the tongue base only (Fujita type III) as visualized by sleep endoscopy is a safe and simple procedure under local anesthesia and can be effective in patients with SUS. No complications during this study were observed. Its effect on OSAS has been shown by other authors, although long-term effects are not stable. The RFTB can be considered as first choice treatment in case of snoring and mild OSAS in Fujita type III obstruction. In the case of moderate to severe sleep apnea, RFTB can be considered as an additional treatment.

Nasal septal surgery and rhinoplasty are controversial in children. Traditionally, an attitude of restraint has been employed by most surgeons till an empirical age of 16 to 18 years. This is to avoid the possible adverse effects that the growth spurts may have on the nose and midface region. Some authors, however, have claimed a paucity of evidence that such untoward effects of surgery are frequent. Research has shown that surgical intervention limited to certain areas of the bony and cartilaginous nasal framework is less likely to affect natural growth patterns. There is a growing consensus toward early intervention, especially in a select group of patients, where deferring the surgery may turn out to be the poorer option in the short and the long term, and suggestions have been made that conservative guidelines may be employed to minimize the unwarranted results. This article presents our experience with septorhinoplasty in children over the last two decades in an academic setting. We have retrospectively studied the pediatric patients who underwent septorhinoplasty at the Academic Medical Centre, Amsterdam, Netherlands. There were 106 children aged between 3 and 19 years who underwent nasal surgery between February 1994 and August of 2007. Sixty-six of these were boys and 40 were girls. Their follow-up ranged from 12 to 157 months with a mean follow-up period of 53 months. Eighteen patients underwent revision surgery. The clinical circumstances, indications for surgery, extent of surgical interference, and outcome in 106 patients are discussed. Importantly, the patients in this series have been followed for variable periods after puberty and adolescence, allowing for assessment beyond the nasal and midfacial growth spurts. Based on our experience, we have outlined the clinical guidelines that we follow for surgery in this age group of patients.