scholarly journals Effect of Head and Neck Position on Upper Airway Function in Standardbred Racehorses

2014 ◽  
Vol 46 ◽  
pp. 22-22 ◽  
Author(s):  
K Johnson ◽  
E Noschka ◽  
K Allen ◽  
A Tilbrook ◽  
T Ryan ◽  
...  
Keyword(s):  
Head And Neck ◽  
Upper Airway ◽  
Neck Position ◽  
Airway Function ◽  
Standardbred Racehorses ◽  
Head And Neck Position

Upper airway extraluminal tissue pressure fluctuations during breathing in rabbits

2003 ◽  
Vol 95 (4) ◽  
pp. 1560-1566 ◽  
Author(s):  
Kristina Kairaitis ◽  
Radha Parikh ◽  
Rosie Stavrinou ◽  
Sarah Garlick ◽  
Jason P. Kirkness ◽  
...  
Keyword(s):  
Tidal Volume ◽  
Head And Neck ◽  
Pressure Transducer ◽  
Upper Airway ◽  
Neck Flexion ◽  
Tissue Pressure ◽  
Pharyngeal Wall ◽  
Neck Position ◽  
Resistive Loading ◽  
Head And Neck Position

Transmural pressure at any level in the upper airway is dependent on the difference between intraluminal airway and extraluminal tissue pressure (ETP). We hypothesized that ETP would be influenced by topography, head and neck position, resistive loading, and stimulated breathing. Twenty-eight male, New Zealand White, anesthetized, spontaneously breathing rabbits breathed via a face mask with attached pneumotachograph to measure airflow and pressure transducer to monitor mask pressure. Tidal volume was measured via integration of the airflow signal. ETP was measured with a pressure transducer-tipped catheter inserted in the tissues of the lateral (ETPlat, n = 28) and anterior (ETPant, n = 21) pharyngeal wall. Head position was controlled at 30, 50, or 70°, and the effect of addition of an external resistor, brief occlusion, or stimulated breathing was examined. Mean ETPlat was ∼0.7 cmH2O greater than mean ETPant when adjusted for degree of head and neck flexion ( P < 0.05). Mean, maximum, and minimum ETP values increased significantly by 0.7-0.8 cmH2O/20° of head and neck flexion when adjusted for site of measurement ( P < 0.0001). The main effect of resistive loading and occlusion was an increase in the change in ETPlat (maximum - minimum ETPlat) and change in ETPant at all head and neck positions ( P < 0.05). Mean ETPlat and ETPant increased with increasing tidal volume at head and neck position of 30° (all P < 0.05). In conclusion, ETP was nonhomogeneously distributed around the upper airway and increased with both increasing head and neck flexion and increasing tidal volume. Brief airway occlusion increased the size of respiratory-related ETP fluctuations in upper airway ETP.

The influence of head and neck position on ventilation with the i-gel airway in paralysed, anaesthetised patients

2011 ◽  
Vol 28 (8) ◽  
pp. 597-599 ◽  
Author(s):  
Takuro Sanuki ◽  
Rumiko Uda ◽  
Shingo Sugioka ◽  
Erina Daigo ◽  
Hiroki Son ◽  
...  
Keyword(s):  
Head And Neck ◽  
Neck Position ◽  
Head And Neck Position

scholarly journals Multi-adjustable post-operative orthosis for congenital muscular torticollis

1993 ◽  
Vol 17 (2) ◽  
pp. 115-119 ◽  
Author(s):  
C. Y. Cheng ◽  
K. W. Ho ◽  
K. K. Leung
Keyword(s):  
Head And Neck ◽  
Average Duration ◽  
Surgical Correction ◽  
Congenital Muscular Torticollis ◽  
Neck Position ◽  
Post Operative Period ◽  
Joint Mechanism ◽  
Muscular Torticollis ◽  
Head And Neck Position

A multi-adjustable torticollis orthosis is described for the post-operative bracing of patients after surgical correction of congenital muscular torticollis. The orthosis can be put on in the early post-operative period and the head and neck position can be maintained in the corrected, and later over-corrected position by the built-in multi-adjustable joint-mechanism. The details of the manufacturing are described. Twenty-five patients (13 girls and 12 boys) from age 1 to 22 with congenital muscular torticollis were fitted with the orthosis post-operatively for an average duration of 10 weeks. Satisfactory compliance with the orthosis was found in 23 cases. Complications were minimal (3 cases) and were related to scalp irritation which improved after minor adjustments of the halo.

EFFECT OF HEAD AND NECK POSITION ON PHARYNGEAL DIAMETER IN HORSES

2010 ◽  
Vol 51 (5) ◽  
pp. 491-497 ◽  
Author(s):  
ANJA CEHAK ◽  
KARL ROHN ◽  
ANN-KRISTIN BARTON ◽  
PETER STADLER ◽  
BERNHARD OHNESORGE
Keyword(s):  
Head And Neck ◽  
Neck Position ◽  
Head And Neck Position ◽  
Pharyngeal Diameter

scholarly journals Influence of head and neck position on the performance of supraglottic airway devices: A systematic review and meta-analysis

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0216673
Author(s):  
Min-Soo Kim ◽  
Jin Ha Park ◽  
Ki-Young Lee ◽  
Seung Ho Choi ◽  
Hwan Ho Jung ◽  
...  
Keyword(s):  
Systematic Review ◽  
Head And Neck ◽  
Meta Analysis ◽  
Supraglottic Airway ◽  
Neck Position ◽  
Supraglottic Airway Devices ◽  
Airway Devices ◽  
Head And Neck Position
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