Introduction to Oropharyngeal Airway

Cephalometric analysis was performed on lateral cephalograms to measure velopharyngeal structure, including hard palate length (ANS-PNS), velar length (PNS-U), pharyngeal depth (PNS-PPW), and oropharyngeal airway space (U-MPW).

The outcome variables were the changes of oropharyngeal airway volumes (OAVs), nasopharyngeal airway volumes (NAVs), minimum cross-sectional area (MCA) and antero-posterior position of hyoid bone (HB).

By affecting the tongue position and oropharyngeal airway volume, torus mandibularis is an anatomical factor associated with obstructive sleep apnea (OSA).

During the operation, we actively prevented and dealt with the occurrence of adverse reactions such as hypersedation and respiratory depression, and placed oropharyngeal airway to improve ventilation for patients with retroglossal drop and respiratory depression.

Postoperatively, the oropharyngeal airway was enlarged.

Patient evaluations presurgery (T1), immediate postsurgery (T2), and at longest follow-up (LFU) (T3) were analyzed using 20 cephalometric landmarks to compute 29 linear and angular measurements to determine surgical changes, long-term skeletal and occlusal stability, as well as oropharyngeal airway changes.

Materials and methods The 90 patients were collected to measure total pharyngeal airway volume (TP), velopharyngeal airway volume (VP), glossopharyngeal airway volume (GP), oropharyngeal airway volume (OP), hypopharyngeal airway volume (HP), and the smallest cross-sectional areas (SCA) of the upper respiratory tract as well as other relevant anatomical structures.

The nasopharyngeal, oropharyngeal airway volumes and the minimum constricted area were measured using Dolphin software on CBCT scans.

The present study aimed to examine the tongue volume and at three levels cross-sectional areas of the tongue, oropharyngeal airways, soft palate and nasopharyngeal airways in the aforementioned breeds.

Skeletal, dentoalveolar, tongue, uvula, hyoid position, and oropharyngeal airway parameters were measured using the Dolphin software, and uvulo-glossopharyngeal area measurements were performed with the AutoCAD software.

Nasopharyngeal and oropharyngeal airway volumes increased significantly (P < 0.

The correlation between the changes in the volume or sectional area of the oropharyngeal airway and the changes in the dental and maxillary indexes and the hyoid position was tested.

The skeletal anchored fixed functional appliance caused a greater increase in the oropharyngeal airway area that may be beneficial for Class II patients who carry a risk of having respiratory problems.

Objectives: The purpose of this study was to assess and compare the volumetric, cross sectional surface area, and linear changes of the oropharyngeal airway in patients following bimaxillary orthognathic surgery using 3-D cone beam computer tomography (CBCT) imaging.

Objectives: To compare Cuffed Oropharyngeal Airway (COPA) with Laryngeal Mask Airway (LMA) in terms of Placement success rate, Requirement of airway interventions and Intraoperative and postoperative complications.

Females showed a statistically significant positive correlation between the pharyngeal airway volume and sagittal position of maxilla and mandible; they also showed a negative correlation between oropharyngeal airway volume and the mandibular plane angle.

Except PNS-AD2 and MAS measurements in group I, nasopharyngeal and oropharyngeal airway dimensions did not significantly change from T1 to T2 in all groups.

Midface advancement surgery is a definite treatment for midface retrusion; however, the subsequent oropharyngeal airway changes might result in velopharyngeal insufficiency (VPI) in affected patients.

The O-C2a, O-EAa, Oc-Axa, and the narrowest oropharyngeal airway space (nPAS) were measured by the lateral X-ray films before operation and at last follow-up, and the differences before and after operation (dO-C2a, dO-EAa, dOc-Axa, and dnPAS) were calculated.

Procedure has previously been reported to safely and effectively reduce snoring, as well as increase the volume of the oropharyngeal airway, and is well accepted by patients.

Cephalograms of the oropharyngeal airway showed that the hyoid bone moved superiorly toward the inferior mandibular border (Δ H-MP) ~5 mm (23.

Early results have demonstrated significant increases in the nasopharyngeal and oropharyngeal airway volumes with successful decannulation in a majority of patients who have undergone this operation.

The current findings suggest that maxillary arch width and length do not contribute to a smaller oropharyngeal airway.

Background Oropharyngeal airways are used both to facilitate airway patency during mask ventilation as well as conduits for flexible scope intubation, though none excel at both.

OBJECTIVE This pilot randomized crossover study evaluated the outcomes of two custom-made mandibular retention devices (MRDs), a computer-aided design (CAD)/computer-aided manufacturing (CAM) device (Narval CC™) and a non-CAD/CAM device (Narval™), on oropharyngeal airway volume in patients with obstructive sleep apnoea (OSA).

The present study investigated the differences between the volume of the oropharyngeal airway and the minimum axial area in three skeletal patterns through the use of cone-beam computed tomography (CBCT).

Aim and Objectives: This study aims to evaluate central obesity, increased body mass index (BMI), and its relation to oropharyngeal airway space using lateral cephalogram in risk prediction of OSA.

Radiographic parameters, including the atlas-dens interval (ADI), O-C2 angle (O-C2a), occipital and external acoustic meatus to axis angle (O-EAa), C2 tilting angle (C2Ta), C2-7 angle (C2-7a), PIA and narrowest oropharyngeal airway space (nPAS), were measured and compared.

Oropharyngeal airway depth and area showed no significant statistical difference at any of the time points.

Using an oropharyngeal airway (OPA) may improve efficacy of mask PPV.

Objective: To study the influence of skeletal malocclusion on the oropharyngeal airway volume and the difference in the airway volume among gender and the different types of skeletal malocclusion.

Following treatment, the micrognathia was corrected and the oropharyngeal airway was significantly expanded.

Introduction The aim of this study was to evaluate three dimensionally the effect of the combined maxillary expansion and protraction treatment on oropharyngeal airway in children with non-syndromic cleft palate with or without cleft lip (CP/L).

Mean negative pressure of the nasal airway, retropalatal airway, oropharyngeal airway, and hypopharyngeal airway is reduced from − 158.

The 72-year-old patient showed ossification of the anterior longitudinal ligament at the C2-C3 level, causing severe narrowing of the oropharyngeal airway.

026) and the increase in oropharyngeal airway area was statistically significant (P < 0.

60% of IF are in the naso-oropharyngeal airway and paranasal sinuses.

0 software was used to reconstruct the upper airway, and indices of oropharyngeal airway dimensions and hyoid position were calculated.

002) for oropharyngeal airway insertion, 1.

To detect changes postoperatively, the posterior airway space was divided into three units: nasopharyngeal airway space (superior airway space - SPAS), oropharyngeal airway space (mid airway space - MAS) and hypopharyngeal airway space (inferior airway space - IAS).

OBJECTIVE To compare the dimensions and density of the tongue in brachycephalic and mesaticephalic dog breeds and to document the relative extents of the nasopharyngeal and oropharyngeal airways occupied by the tongue and palatal tissues.

1 Loose teeth are easily displaced out of their sockets by rapid intubation or by a hastily placed oropharyngeal airway or even an urgently positioned and manipulated laryngoscope blade.

Results Immediately after maxillary protraction, the tongue moved superiorly and the nasopharyngeal and superior oropharyngeal airway dimensions increased.

We therefore investigated oropharyngeal airway microbial community structures in a general population sample of Australian adults.

C2-6 Cobb angle, C2-7 Cobb angle, occiput-C2 angle, Atlas-dens interval (ADI), narrowest oropharyngeal airway space (nPAS), cervical sagittal vertical axis (cSVA), cervical tilt, cranial tilt, neck tilt, thoracic inlet angle (TIA), and T1 slope were measured using kMRI, and analyzed for their relationship with C2-6 or C2-7 Cobb angle.

Investigations revealed a large parapharyngeal mass causing narrowing of the nasopharyngeal and oropharyngeal airway with skeletal and lung metastasis.

000), oropharyngeal airway dimensions (P < 0.

OUTCOME MEASURES Presence of postoperative dysphagia, O-C2a, C2 tilting angle (C2Ta), O-EAa, and the narrowest oropharyngeal airway space (nPAS).

The 3D volumes of PAS showed significant decreases in the oropharyngeal airway, hypopharyngeal airway, and total airway spaces.

Study aim was to assess the impact of two MRD on OSA patient’s oropharyngeal airway volume (OV).

Background Manual bulb suction is commonly used to promote naso-oropharyngeal airway clearance.

Our objective was to investigate the relationship of oropharyngeal airway dimensions, sleep characteristics, patient biometrics, and treatment response within an OSA patient sample.

oropharyngeal airways, could not be found by 80% of staff tested.

The narrowed angle between the mandible and the posterior cranial base in Apert skulls is consistent with the more limited nasopharyngeal and oropharyngeal airway space.

Aim: This study was carried out to compare different measurements of the oropharyngeal airway in patients aged over 40 years on cone beam computed tomography (CBCT) images.

Introduction The aim of this study was to evaluate three dimensionally the effect of the combined maxillary expansion and protraction treatment on oropharyngeal airway in children with non-syndromic cleft palate with or without cleft lip (CP/L).

OUTCOME MEASURES The outcome measures included the O-EAa, O-C2a, the narrowest oropharyngeal airway space (nPAS), and the morbidity of dysphagia after OCF.

, the angle made by McGregor's line and a line joining the external auditory canal and the middle point of the endplate of the axis [EA line]) as a novel, useful, and powerful predictor of the anterior-posterior narrowest oropharyngeal airway space (nPAS) distance in healthy subjects.

The primary outcome was the oropharyngeal airway seal pressure, and the secondary outcomes were the ease of insertion and the complication rate.