Polysomnographic Study Research Articles

Diagnostic Accuracy of a Portable Electromyography and Electrocardiography Device to Measure Sleep Bruxism in a Sleep Apnea Population: A Comparative Study.

The gold standard for diagnosing sleep bruxism (SB) and obstructive sleep apnea (OSA) is polysomnography (PSG). However, a final hypermotor muscle activity often occurs after apnea episodes, which can confuse the diagnosis of SB when using portable electromyography (EMG) devices. This study aimed to compare the number of SB episodes obtained from PSG with manual analysis by a sleep expert, and from a manual and automatic analysis of an EMG and electrocardiography (EKG) device, in a population with suspected OSA. Twenty-two subjects underwent a polysomnographic study with simultaneous recording with the EMG-EKG device. SB episodes and SB index measured with both tools and analyzed manually and automatically were compared. Masticatory muscle activity was scored according to published criteria. Patients were segmented by severity of OSA (mild, moderate, severe) following the American Academy of Sleep Medicine (AASM) criteria. ANOVA and the Bland-Altman plot were used to quantify the agreement between both methods. The concordance was calculated through the intraclass correlation coefficient (ICC). On average, the total events of SB per night in the PSG study were (8.41 ± 0.85), lower than the one obtained with EMG-EKG manual (14.64 ± 0.76) and automatic (22.68 ± 16.02) analysis. The mean number of SB episodes decreases from the non-OSA group to the OSA group with both PSG (5.93 ± 8.64) and EMG-EKG analyses (automatic = 22.47 ± 18.07, manual = 13.93 ± 11.08). However, this decrease was minor in proportion compared to the automatic EMG-EKG analysis mode (from 23.14 to 22.47). The ICC based on the number of SB episodes in the segmented sample by severity degree of OSA along the three tools shows a moderate correlation in the non-OSA (0.61) and mild OSA (0.53) groups. However, it is poorly correlated in the moderate (0.24) and severe (0.23) OSA groups: the EMG-EKG automatic analysis measures 14.27 units more than PSG. The results of the manual EMG-EKG analysis improved this correlation but are not good enough. The results obtained in the PSG manual analysis and those obtained by the EMG-EKG device with automatic and manual analysis for the diagnosis of SB are acceptable but only in patients without OSA or with mild OSA. In patients with moderate or severe OSA, SB diagnosis with portable electromyography devices can be confused due to apneas, and further study is needed to investigate this.

Comparison of the Upper Pharyngeal Airway in Thai Children With or Without Unilateral Cleft Lip and Palate in the Supine Position

Objectives: This study aimed to evaluate differences in the upper pharyngeal airway morphology between Thai children with repaired unilateral cleft lip and palate (UCLP) and Thai non-cleft children. Methods: This prospective study used cone beam computed tomography (CBCT) and polysomnography (PSG) studies. The subjects were 34 children with UCLP (21 males and 13 females; mean age 8.94±1.87); and 32 non-cleft children (20 males and 12 females; mean age 10.03±1.91). The Dolphin imaging software measured the volume and the most constricted cross-sectional airway (version 11.7 premium). Results: An independent sample t-test showed that the differences between groups were significant. The means of oropharyngeal (p=0.003), hypopharyngeal (p=0.020), and total volume (p=0.013) in UCLP children were lower than those in non-cleft children. Furthermore, the most constricted axial area of the oropharyngeal airway in UCLP children was narrower than that in non-cleft children (p=0.004). Conclusions: The volume and most constricted axial area of the upper pharyngeal airway in Thai UCLP children were significantly smaller than those in Thai non-cleft children

Gender differences in the upper airway, craniofacial morphological and polysomnographic parameters in patients with obstructive sleep apnoea.

Obstructive sleep apnoea (OSA) is a common sleep disorder characterized by repetitive episodes of upper airway collapse during sleep associated with arousals with or without oxygen desaturation. This study aims to assess and analyse the morphological and neurological factors associated with obstructive sleep apnoea using polysomnography study data and two-dimensional cephalometric analysis of airway and skeletal parameters and their correlation in the patients with varying severities of obstructive sleep apnoea. This study included 892 patients who underwent a complete work up, including a thorough history, clinical examination, standard polysomnography study and 2D cephalometric analysis to diagnose obstructive sleep apnoea. This study divided the participants into two groups based on the AHI score from the PSG study: AHI < 15 and AHI > 15 groups. The groups were further divided into male and female groups to study the prevalence of OSA. The analysis involved 13 cephalometric parameters: Seven linear and six angular measurements. The airway parameters measured in this study were minimum posterior airway space (PAS_min), hyoid bone to the mandibular plane (H_MNP) and soft palate length (SPL). All the subjects in this study underwent a standard overnight polysomnography study at the sleep centre in Samsung Medical Center. A total of 892 adult participants (M: F = 727:165, mean age: 50.6 ± 13.2 years and age range: 18-85 years). AHI >15 group was significantly older with higher BMI, NC and WC compared to the AHI < 15 groups in both male and female groups. There was statistical significance observed in N1, N3, AI, ODI, lowest saturation (%) and apnoea max length between the groups (p < .001). The arousal index (AI), especially the respiratory arousal index was considerably higher in the male group. There were significantly higher values in all the PSG parameters in the male group. In the airway parameters, hyoid bone position and soft palate length showed significant differences (p < .001), whereas the PAS did not show any differences (p = .225) between the AHI <15 and AHI >15 groups. The overall skeletal cephalometric parameters showed no significant differences between the groups, whereas the gonial angle and AB to mandibular plane angle showed significant differences in the female group (p = .028, p = .041 respectively). The partial correlation of cephalometric parameters with AHI showed a stronger correlation between the H_MNP and AHI in both men and women. The position of the hyoid bone and the soft palate length influences the progression of OSA, especially in male patients. This study found no direct association between the minimum PAS and varying severities of OSA in men and women. We speculate that more than the craniofacial morphological factors such as the sagittal and vertical position of the maxilla and the mandible, the position of the hyoid bone might be more responsible for the severity of OSA.

Association Between Slow-Wave Sleep Loss and Incident Dementia

Slow-wave sleep (SWS) supports the aging brain in many ways, including facilitating the glymphatic clearance of proteins that aggregate in Alzheimer disease. However, the role of SWS in the development of dementia remains equivocal. To determine whether SWS loss with aging is associated with the risk of incident dementia and examine whether Alzheimer disease genetic risk or hippocampal volumes suggestive of early neurodegeneration were associated with SWS loss. This prospective cohort study included participants in the Framingham Heart Study who completed 2 overnight polysomnography (PSG) studies in the time periods 1995 to 1998 and 2001 to 2003. Additional criteria for individuals in this study sample were an age of 60 years or older and no dementia at the time of the second overnight PSG. Data analysis was performed from January 2020 to August 2023. Changes in SWS percentage measured across repeated overnight sleep studies over a mean of 5.2 years apart (range, 4.8-7.1 years). Risk of incident all-cause dementia adjudicated over 17 years of follow-up from the second PSG. From the 868 Framingham Heart Study participants who returned for a second PSG, this cohort included 346 participants with a mean age of 69 years (range, 60-87 years); 179 (52%) were female. Aging was associated with SWS loss across repeated overnight sleep studies (mean [SD] change, -0.6 [1.5%] per year; P < .001). Over the next 17 years of follow-up, there were 52 cases of incident dementia. In Cox regression models adjusted for age, sex, cohort, positivity for at least 1 APOE ε4 allele, smoking status, sleeping medication use, antidepressant use, and anxiolytic use, each percentage decrease in SWS per year was associated with a 27% increase in the risk of dementia (hazard ratio, 1.27; 95% CI, 1.06-1.54; P = .01). SWS loss with aging was accelerated in the presence of Alzheimer disease genetic risk (ie, APOE ε4 allele) but not hippocampal volumes measured proximal to the first PSG. This cohort study found that slow-wave sleep percentage declined with aging and Alzheimer disease genetic risk, with greater reductions associated with the risk of incident dementia. These findings suggest that SWS loss may be a modifiable dementia risk factor.

Impact of site, size and severity of ischemic cerebrovascular stroke on sleep in a sample of Egyptian patients a polysomnographic study

BackgroundSleep difficulties following a cerebrovascular stroke are an interesting topic in the scientific community. Following a brain ischemic insult, a variety of sleep problems can occur.Aim of workTo study the sleep architecture following stroke and to identify the impact of site, size and severity of ischemic cerebrovascular troke on sleep microstructure.Subjects and methodsthis was a case control study; polysomnogram was done for 93 patients admitted to the stroke unit at El- Hadara university hospital with the first ever ischemic stroke. NIHSS was calculated immediately and 1 month after stroke onset. 50 age matched control subjects with no evidence of central nervous system or major psychiatric disorder by history or clinical examination.ResultsTotal sleep time, sleep efficiency were lower in ischemic cerebrovascular stroke patients than in control group and this was statistically significant (p = .001* p = .0001* respectively). Arousal index limb movement index and snoring index were all higher among the ischemic cerebrovascular stroke group in comparison to the control group and this was statistically significant (p = .0001*p = .05*p = .0001). Both the REM(rapid eye movement) and REM latency were highest among brain stem stroke, and this was statistically significant p = .043*, p = .0.001*.cortical infarcts showed higher AHI (apnea hypopnea index)and this was statistically significant p = 0.002* Limb movement index was higher among sizable size stroke and this was statistically significant (p = 0.038). NIHSS National Institutes of Health Stroke Scale after 1 month follow up showed a significant indirect correlation with the lowest oxygen saturation during sleep (p = 0.047). Lowest oxygen saturation was lowest among sizable stokes and desaturation index was highest among sizable size strokes both were statistically significant p = 0.006. NIHSS2 had a significant negative correlation with the lowest oxygen saturation during sleep p = 0.047.ConclusionThe microstructure of sleep is significantly impacted by cerebrovascular stroke. Brain stem strokes had the highest REM and REM latency, while cortical strokes had the highest moderate-to-severe AHI. Sizable strokes displayed increased indices of limb movement, desaturation, and oxygen saturation.

The Relationship Between Blood Parameters, Sleep, Anxiety and Depression Symptoms: A Retrospective Polysomnography Study

Objective: It is known that anxiety and depression are associated with sleep disorders and many systemic diseases. This study aims to analyse the relationship between anxiety, depression symptoms and sleep parameters among the patients subjected to polysomnographic recording. Material and Methods: A total of 808 patients who were subjected to a polysomnographic recording were included in the retrospective cross-sectional and hospital-based study. Body mass index (BMI) was calculated. Anxiety and depression symptoms were evaluated using the Beck anxiety and Beck depression inventory. Patients were divided into groups according to anxiety and depression scores. The apnoea hypopnea index (AHI), oxygen desaturation index (ODI), and peripheral oxygen saturation (SaO2) were obtained from the polysomnographic recordings. Results: In the study, there were 528 (65.3%) male and 280 (34.7%) female patients with the mean age 47.64 ± 12.25 (18-82). Depression was detected in 307 (38.0%) patients according to Beck depression score. Mild anxiety symptoms were detected in 516 (63.9%), moderate anxiety symptoms in 215 (26.6%) patients and severe anxiety symptoms in 77 (9.5%) patients according to Beck anxiety score. There was a statistical difference for all polysomnographic parameters in depression and anxiety severity groups (p=0.001). In patients with depression had lower free-T3 and higher C-reactive protein (CRP) levels (p=0.001, p=0.014). The difference between thyroid stimulating hormone (TSH) and FT4 levels was determined according to the severity of the depression (p=0.037, p=0.047). CRP was higher in patients with severe anxiety (p=0.008); and free-T3 was lower in patients with moderate and severe anxiety (p=0.003, p=0.001). In the logistic regression analysis, free-T3, minimum SaO2 and BMI had an impact on anxiety (p=0.002, p=0.033, p=0.031) and depression (p=0.001, p=0.017, p=0.035). Conclusion: Anxiety and depression symptoms are affected by numerous factors, especially sleep characteristics. Minimum SaO2, CRP and free-T3 are main predisposing factors on anxiety and depression

O055 NIV titration: How to Match Ventilator Settings to the Patient?

Abstract Introduction Non-invasive ventilation (NIV) is a treatment that improves mortality and quality of life in chronic respiratory failure. The monitoring used to titrate NIV varies substantially; however, treatment is directed towards improving pulmonary gas exchange and sleep quality. The aim was to evaluate whether different montages of signals, influenced identification of respiratory and patient ventilator asynchrony (PVA) events and ventilation titration. Method 50 laboratory NIV polysomnography (PSG) studies were reviewed under 3 different signal conditions: NIV PSG, ventilator derived signals (V) and polygraphy (PG): ventilator signals, respiratory bands, transcutaneous carbon dioxide and oximetry. Two respiratory and sleep physicians reviewed and scored respiratory and PVA events for each individual study with agreement quantified with Cohen’s kappa statistic. Physicians’ confidence and satisfaction of ventilator settings and titration recommendations were ranked on a 5-point Likert scale and compared with ordinal logistic regression. Results There were marked differences in the identification of respiratory events including upper airway obstruction with reduced respiratory drive; PSG vs V kappa 0.1 (CI -0.12, 0.32) and PSG vs V kappa 0.43(CI 0.2, 0.67). Ineffective effort, a measure of PVA, PSG vs V studies demonstrated kappa 0.02 (CI 0, 0.05) compared with PSG vs PG kappa 0.34 (CI 0.16, 0.53). Physician confidence for ventilation prescription was lower in PG and V studies at -1.3 and -3.5 points respectively when compared with PSG. Conclusion Ventilator only derived signals resulted in key differences in respiratory event, PVA identification and physician confidence. This may help inform future models of NIV care.

O011 Exploring Nocturnal Blood Pressure Surges Relationships with Brain Health and Cognitive Function.

Abstract Introduction Cerebral small vessel disease is a possible mechanism to explain the link between long-term incompletely treated obstructive sleep apnoea (OSA) and dementia. Recent evidence suggests nocturnal blood pressure (BP) surges triggered by OSA-related sympathetic hyperactivity could play a critical role. However, this remains to be determined as they often occur concurrently with desaturation events. Methods During an in-lab polysomnography study of 7 controls [AHI≤5] and 20 untreated OSA patients [AHI&amp;gt;5] aged 45-65 years the frequency of blood pressure surges (&amp;gt;10% systolic ↑BP) in the presence or not of desaturation events (↓SpO2&amp;gt;3%) were quantified with a SOMNOtouch™ NIBP device. Cerebral perfusion was assessed with pCASL MRI and brain lesions with anatomical MRI scans. The global deficit score was determined for cognitive function assessment. Inflammation was quantified with blood hs-CRP. Results After controlling for age, BMI, gender, blood glucose and cholesterol, higher AHI was associated with more frequent BP surges (r=0.52, P=0.03), BP surges occurring with desaturation events (r=0.87, P&amp;lt;0.001), but not with BP surges without oxygen desaturation (P = 0.11). Concurrent BP surges and oxygen desaturation was associated with increased hs-CRP (r=0.55, P=0.02). Frequency of BP surges was not related to cerebral perfusion, brain lesions or the global deficit score. Conclusions Recording nocturnal blood pressure surges during polysomnography may provide insight into the cardiovascular burden associated with OSA. Interestingly, an inflammatory response is associated with BP surges only during desaturations, i.e. during respiratory events. Further work is needed to assess the utility of BP surges in predicting longer-term cognitive deficits.

P044 Assessing Sp02 Data Reliability in a Paediatric Laboratory: A Comparative Study of Pulse Oximetry and Transcutaneous Oxygen Monitoring

Abstract Introduction Pulse oximetry is the primary method for measuring Sp02 in polysomnography studies to determine the presence of sleep apnoea. In paediatric studies where there is significant artefact in pulse oximetry, we investigate if transcutaneous oxygen monitoring (TcOM) can be used as a reliable alternative to measure blood oxygen concentration (Sp02). Methods A comparison of pulse oximetry (Nonin) and TcOM (Sentec) data was performed by a retrospective analysis of 16 diagnostic studies (Male=50%; Median age= 8±4.69SD). 6 studies were excluded due to: AHI &amp;gt;5/hr, missing data and artefact. A comparison was made between the two sampling methods for: Oxygen desaturation index (ODI) per hour, nadir and baseline. Statistical analysis run was a paired t-test. Results Poor test-retest reliability was observed for all parameters- mean(SD): ODI Nonin=1.13(1.24), ODI Sentec=50.74(29.13)*; Nadir Nonin=91.10(3.78), Nadir Sentec=69.10(10.62)*; Baseline Nonin=98.(0.57), baseline Sentec=99.50(0.71)*. These results strongly indicate a significant statistical difference between data groups. *indicates P=&amp;lt;0.05 Discussion Our analysis demonstrated inconsistent data between the two methods, and unstable Tc0M readings, which if used could lead to misdiagnosis of sleep-disordered breathing. Further comparative analysis using different Tc0M skin sites could yield more reliable data. Two reliable sources of SpO2 data would provide an in-clinic verification tool in instances of significant artefact or troubleshooting, to improve quality of studies conducted.

Sleep architecture and vitamin D in hypertensives with obstructive sleep apnea: A polysomnographic study.

Obstructive sleep apnea (OSA) and arterial hypertension (AH) are closely linked disorders with common pathophysiological features. The present study aimed to investigate the relationship between AH and OSA by examining sleep architecture, vitamin D concentration and electrolyte levels in patients with these coexisting conditions. A total of 133 patients suspected of having OSA were recruited for examination. The participants were divided into 2 groups: hypertensives (n = 52); and normotensives (n = 81). One full-night polysomnographic examinations were conducted, followed by the statistical analysis of the collected data. Hypertensive individuals displayed increased apnea-hypopnea index (AHI), oxygen desaturation index (ODI), respiratory arousal index (RAI), and periodic limb movement index (PLMI) as compared to non-hypertensive individuals. Moreover, sleep efficiency (SE), the bruxism arousal index (BAI) and oxygen saturation (SpO2)level were decreased in the hypertensive group. In terms of biochemical parameters, hypertensive individuals exhibited a lower magnesium (Mg) level, and higher levels of C-reactive protein (CRP), uric acid (UA) and glucose. Notably, there were no statistical differences in vitamin D concentration between hypertensive and normotensive individuals. The study explored the potential influence of calcium (Ca), Mg, vitamin D, and UA concentrations on the sleep architecture of patients with comorbid AH and OSA. The findings revealed several notable associations. Firstly, sleep fragmentation correlated with Ca level, suggesting a potential role for both Ca and vitamin D in sleep arousals. Secondly, a higher UA concentration was linked to a higher AHI and increased sleep fragmentation. Additionally, alterations in Mg concentration were observed among hypertensive individuals with OSA. However, further research is needed to fully comprehend the potential impact of these factors on the sleep architecture of hypertensive individuals with apnea.

Study of Haematocrit Level in Obstructive Sleep Apnea Syndrome

Obstructive Sleep Apnea Syndrome can lead to oxyhaemoglobin desaturation and has the possibility of stimulating erythropoiesis, leading to an increased haematocrit. The aim of this study is to identify the level of haematocrit in obstructive sleep apnea syndrome (OSAS) patients and to determine the correlation between haematocrit levels and the severity of obstructive sleep apnea syndrome (OSAS). This is a descriptive cross-sectional study at Hospital Universiti Sains Malaysia. All consented patients were interviewed and underwent a polysomnography (PSG) study. The severity of OSAS was based on the apnea–hypopnea index (AHI) and average oxygen desaturation. The blood haematocrit level was also obtained. Thirty-six OSAS patients were in the study group, and 17 patients were in the control group. The mean haematocrit level in the control group was 41.6 (2.5 SD), whereas in the study group the mean haematocrit level was 44.0 (3.27 SD). Pearson correlation analysis showed there was no significant correlation between AHI and haematocrit level (p-value: 0.392), however, there is a significant correlation between haematocrit levels and average oxygen saturation level (P-value: 0.022). The independent t-test between mean haematocrit level between OSAS group and control group showed that there was a significant difference between the mean haematocrit level among the control and OSAS groups. The increased level of haematocrit is significantly correlated with average oxygen desaturation but not with AHI in OSAS patient. Average oxygen desaturation can be considered as a parameter to assess severity and hypoxic stress in OSA patients.

Cardiovascular diseases across OSA phenotypes: A retrospective cohort study

BackgroundDespite the considerable knowledge of Obstructive Sleep Apnea (OSA) implications for cardiac diseases, the evidence regarding cardiovascular complications across OSA phenotypes including Rapid Eye Movement OSA (REM-OSA) and Positional OSA (POSA) is limited. In this study, we aimed to evaluate the risk of cardiovascular diseases development and progression among patients with REM-OSA and POSA. MethodsBased on a retrospective cohort analysis, we included polysomnography studies done in the sleep lab at the Jordan University Hospital. Regarding cardiovascular diseases, primary outcomes were Heart Failure, and 1-years Major Adverse Cardiac Events while secondary outcomes were atrial fibrillation, pulmonary hypertension, other arrhythmia, metabolic profile, and echocardiographic measurements of the heart. ResultsThe total number of the included patients was 1,026 patients. POSA group had significantly lower percentage of patients with hypertension (P-value = 0.004). Additionally, systolic blood pressure and HbA1c were significantly lower among patients with POSA compared to the NPOSA group (P-value<0.050). Left ventricular end diastolic dimension was significantly higher among patients with POSA while ejection fraction was significantly lower (P-value<0.050). Patients with diabetes and mean HbA1c were significantly lower among patients with REM-OSA compared to patients with NREM-OSA (P-value = 0.015, P-value = 0.046). Multivariate regression analysis revealed that after adjusting for age, gender and preexisting comorbidities, POSA was significantly associated with lower ejection fraction and higher left ventricular diastolic diameter. ConclusionIn conclusion, our findings indicate that POSA might be associated with huge and clinically significant heart strain and poor cardiac functions, yet it might not have a clinically significant atherogenic effect. This study should guide clinicians to identify OSA phenotypes to imply the best treatment plan to reduce its detrimental impact on cardiac muscle.

A preliminary study investigating the clinical potential of measuring cerebrospinal-fluid lactate levels in patients with narcolepsy type 1 and 2

Study objectivesBesides the quantification of orexin-A/hypocretin-1 cerebrospinal fluid (CSF) levels in narcolepsy for diagnostic purposes, several other CSF biomarkers have been evaluated, although with controversial results. Since CSF lactate concentrations fluctuate according to the sleep-wake cycle with higher levels during wakefulness and lower levels during sleep, as documented in animal model studies, the present study aimed at quantifying the CSF lactate levels in patients with narcolepsy type 1 (NT1) and 2 (NT2), which are two sleep disorders featured by excessive daytime sleepiness (EDS). MethodsPatients with NT1 and NT2 were enrolled in this study and compared to a control group of similar age and sex. All the subjects included in the study underwent a polysomnographic study followed by lumbar puncture for the quantification of CSF lactate levels at awakening. Results23 NT1 (43.5 % male; 36.43 ± 11.89 years) and 15 NT2 patients (46.7 % male; 37.8 ± 14.1 years) were compared to 17 controls (58.8 % male; 32.3 ± 8.4 years). CSF lactate concentrations were reduced in patients with NT1 and NT2 compared to controls but no differences were found between the two groups of patients. ROC curves analysis showed that CSF lactate ≤1.3 mmol/l had a sensitivity of 96.49 and a specificity of 82.35 % for discriminating patients with narcolepsy from controls. ConclusionsThe present study showed a decrease in CSF lactate levels in patients with narcolepsy. Notably, the reduction of lactate levels was present in both NT1 and NT2 patients, independently of CSF orexin levels. Narcolepsy patients present EDS with daytime napping and REM-related episodes, possibly substantiating the CSF lactate levels reduction related to the impaired daytime wakefulness which was demonstrated in animal studies. Moreover, CSF lactate levels present a good sensitivity and adequate specificity for differentiating narcolepsy from controls. Further studies are needed to understand the role of CSF lactate and its usefulness for monitoring daytime vigilance in patients with narcolepsy.

Sleep Symptoms and Disorders in Episodic Migraine: Assessment and Management.

We review research on sleep symptoms and disorders in patients with episodic migraine and propose a framework for evaluating sleep symptoms in this patient population. Patients with episodic migraine consistently report poorer sleep on validated self-reports compared to those without migraine. In polysomnographic studies, children with migraine have objectively shorter sleep duration and lower percentage of REM sleepinterictally. Prospective actigraphy studies in adults and children suggest that there are no significant changes in sleep duration, efficiency, or quality in the night before or after a migraine attack. The relationship between sleep and migraine is multifaceted. Patients with episodic migraine report poorer sleep and have higher risk of some sleep disorders, including insomnia, sleep-related bruxism, and restless legs syndrome. Sleep screening questions may be incorporated into headache evaluations. Care should be taken to avoid headache medications that may exacerbate sleep symptoms. Evidence-based treatments for insomnia may be initiated while patients await CBT-I. Further studies are needed to assess whether treatment of comorbid sleep disorders results in improvement in migraine-related burden in those with episodic migraine.

Upper airway assessment in obstructive sleep apnea patients: can computed tomography with lateral cephalometry replace drug-induced sleep endoscopy (DISE)?

ObjectiveTo evaluate the association between results from drug-induced sleep endoscopy (DISE) and computed tomography with lateral cephalometry (CTLC) of the pharynx in obstructive sleep apnea (OSA) patients, regarding the same anatomic level, in order to understand if CTLC could replace DISE in selected patients. Study designCross-sectional. SettingTertiary hospital. MethodsA total of 71 patients who attended the Sleep Medicine Consultation in the Otorhinolaryngology Department of Hospital CUF Tejo between 1.6.2019 and 30.9.2021, performed a polysomnographic sleep study and were elected to undergo DISE and CTLC of the pharynx for diagnostic purposes were selected. Obstructions at the same anatomic levels – tongue base, epiglottis and velum - were compared in both exams. ResultsPatients with reduction of epiglottis-pharynx space on CTLC had also a complete obstruction at epiglottis level on the VOTE classification of DISE (p = 0,027). Reduction of velum-pharynx space or tongue base-pharynx space were not related to complete obstruction of the velum (P = 0,623) or the tongue base (p = 0,594) found in DISE. Those with two or more space reductions had a tendency to multilevel obstruction observed in DISE (p = 0.089). ConclusionWhen evaluating the obstruction level(s) of an OSA patient, efforts should be made to perform DISE, since CTLC measures, though regarding at the same structures, don´t correlate completely with obstructions observed in DISE.

Polysomnographic study: characteristics of sleep disturbances in patients with Parkinson's disease

Polysomnographic study: characteristics of sleep disturbances in patients with Parkinson's disease

A Ten-Year Follow-Up Case Report on the Treatment of Severe Obstructive Sleep Apnea Using a Mandibular Advancement Device

This report describes the challenging case of a 45-year-old male Caucasian patient with morbid obesity and severe obstructive sleep apnea who was followed up for over 10 years by a multidisciplinary team that included sleep and dental medicine professionals, physiotherapists, and nutritionists. The patient underwent seven polysomnographic studies during the follow-up period; furthermore, nocturnal digital monitoring (NDM) was performed during the COVID-19 pandemic. The polysomnographic study revealed that the apnea-hypopnea index of the patient reduced from 131.7 ev/h to 9.4 ev/h without symptoms, while his NDM oxygen desaturation index varied because of weight gain during the COVID-19 pandemic. This case report highlights the importance of a multidisciplinary team in ensuring the success of mandibular advancement device therapy with excellent clinical outcomes. Furthermore, this report suggests that NDM was a good tool for follow-up during the COVID-19 pandemic.

Integrative traditional Chinese medicine treatment for children with obstructive sleep apnea

PurposeObstructive sleep apnea (OSA) is a chronic disease that affects 1%–6% of children. Our study aims to explore the effectiveness and clinical characteristics of integrative Traditional Chinese Medicine (ITCM) for pediatric OSA. Materials and methodsIn this retrospective cohort study, we assessed differences of polysomnography (PSG) parameters and clinical characteristics between 2009 and 2020. Children <12 years old diagnosed with OSA (n = 508) were included and were categorized into ITCM cohort, western medicine (WM) cohort ,and surgery cohort. Outcomes were apnea-hypopnea index (AHI), respiratory disturbance index (RDI), and body mass index (BMI). ResultsThere were 56 (11%), 324 (63.8%), and 128 (25.2%) patients in the ITCM, WM, and surgery cohorts. Among 17, 26, and 33 patients in the ITCM, WM, and surgery cohorts underwent follow-up PSG studies, respectively. In the ITCM follow-up cohort, AHI were significantly reduced (9.59 to 5.71, p < 0.05). BMI significantly increased in the WM follow-up cohort (19.46 to 20.50, p < 0.05) and the surgery follow-up cohort (18.04 to 18.85, p < 0.01). Comparing ITCM to WM cohort, a significant difference was found between the changes in RDI (ITCM: −6.78, WM: 0.51, p < 0.05) after treatment. Among ITCM follow-up cohort, the most prescribed TCM formula was Forsythia and Laminaria Combination. The most prescribed TCM herb was Ephedrae Herba. ConclusionsITCM therapy can significantly reduce RDI and control BMI. We identified potential TCM treatments for pediatric OSA. Further study of the pharmacological mechanisms and clinical efficacy is warranted.

Hypoglossal Nerve Stimulation Therapy Outcomes in Apnea- Versus Hypopnea-Predominant Patients.

The influence of apnea- and hypopnea-predominance on hypoglossal nerve stimulation therapy outcomes (HGNS) is still poorly defined. We assessed the significance of apnea- and hypopnea-predominance in HGNS outcomes. Case series with chart review. Single-institution tertiary care center. A total of 216 subjects were included, all of which had undergone drug-induced sleep endoscopy (DISE) and HGNS implantation. Demographic and polysomnographic data were collected. The 4% apnea-hypopnea criteria were used to calculate apnea-hypopnea index (AHI). Central apneas were omitted. Univariate logistic and linear regression were used to study the association between these data and apnea-predominance and hypopnea-predominance. Kruskal-Wallis rank sum test was used to compare medians between groups for DISE collapse patterns. Sixty-three patients were apnea-predominant, and 153 patients were hypopnea-predominant. These 2 groups were similar demographically (p > .20). There was no significant difference in HGNS outcomes between the groups assessed using Sher20 criteria at the 1-year mark using all-night, single-setting polysomnography or home sleep studies. Apnea index (AI)/AHIand reduction in AHI from preoperative to titration were significantly associated (p = .046). The median preoperativehypopnea index was significantly lower (p = .033) in subjects with no oropharyngeal collapse than patients with partial or complete oropharyngeal collapse. There were no significant relationships between AI/AHI and the different degrees of collapse at the velopharynx, oropharynx, tongue base, or epiglottis. In line with CPAP, tonsillectomy, and mandibular advancement therapy studies, we found there was largely no significant difference in DISE anatomy or in HGNS treatment outcomes between apnea- and hypopnea-predominant individuals.

Factors correlated with excessive daytime sleepiness in patients with Parkinson's disease: A polysomnography study.

To explore the factors correlated with excessive daytime sleepiness (EDS) in patients with Parkinson's disease (PD). A total of 239 PD patients were divided into two groups based on the presence of EDS (Epworth Sleepiness Scale score≥10) (PD-EDS vs. PD-non-EDS). Participants underwent an extensive assessment to determine demographic features, disease severity, polysomnography characteristics, and nonmotor symptoms. Of the 239 patients, 56 patients (23.4%) were classified as having PD combined with EDS. Binary logistic regression analysis showed that fatigue (Fatigue Severity Scale [FSS] score ≥4) (odds ratio [OR] [95% CI]=4.897 [2.376-10.095], p<.001) and the respiratory-related microarousal index (OR [95% CI]=2.063 [1.085-3.923], p=.027) were independent risk factors for EDS in PD patients. A priori-determined stratified analysis showed that after adjustment for confounding factors, the association of the respiratory-related microarousal index with EDS was significant (OR=4.404, 95% CI 1.673-11.592, p trend=.036) in patients with respiratory arousal index scores in the highest quintile compared with those with scores in the lowest quintile. Our data revealed a close association among the respiratory-related microarousal index, FSS scores, and EDS. It can be speculated that fragmented sleep and pathological abnormalities of the central nervous system resulting in changes in arousal are major influencing factors of EDS in PD.