scholarly journals Comparative in-vitro Study of the Trachospray, a New Device for Topical Anaesthesia of the Upper Airway

2021 ◽  
Vol Volume 14 ◽  
pp. 9-14
Author(s):  
Geert-Jan van Geffen ◽  
Hielke Markerink ◽  
Marc van Barneveld ◽  
Frank Verhoeven ◽  
Gert Jan Scheffer ◽  
...  
Keyword(s):  
Upper Airway ◽  
In Vitro Study ◽  
Vitro Study ◽  
Topical Anaesthesia ◽  
New Device

An In Vitro Study of a New Device: Evaluation of Novel Wide-Angle Lens Flexible Cystoscope Using Phantom Bladder Model

2017 ◽  
Vol 31 (10) ◽  
pp. 1073-1078
Author(s):  
Kunihisa Yamaguchi ◽  
Takamitsu Inoue ◽  
Tomonori Habuchi ◽  
Junichi Inokuchi ◽  
Akira Yokomizo ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Wide Angle ◽  
New Device ◽  
Flexible Cystoscope ◽  
Wide Angle Lens ◽  
Bladder Model

The Association Between Upper Airway Patency and Speaking Valve Trial Tolerance for Patients With Tracheostomy: A Clinical Retrospective Study and an In Vitro Study

2021 ◽  
pp. 1-9
Author(s):  
Jie Li ◽  
Andrew Perez ◽  
Joan Schehl ◽  
Allison Albers ◽  
Inna A. Husain
Keyword(s):  
Upper Airway ◽  
In Vitro Study ◽  
Adult Patients ◽  
Vitro Study ◽  
Lower Percentage ◽  
Noninvasive Methods ◽  
Airway Patency ◽  
Speaking Valve ◽  
The Relationship

Purpose Upper airway patency is crucial in a patient's ability to tolerate a one-way speaking valve (SV). Traditional assessment of airway patency is mainly subjective. We developed four noninvasive methods to assess patency (leak volume, transtracheal pressure [TTP], end-tidal CO 2 , and Mallampati score) in our institution. This study was aimed to evaluate the effectiveness of the four methods and explore the relationship between the patient's upper airway patency and SV trial tolerance. Method A retrospective cohort study was conducted to enroll adult patients with tracheostomies eligible for an SV trial from April 2019 through January 2020. An in vitro study was also implemented to explore the relationship between upper airway patency and noninvasive measurements. Results Forty patients (22 men and 18 women) were included; 16 used SV in-line with mechanical ventilation. Twenty-four patients tolerated an SV trial of > 10 min; they had lower TTP (3.0 [2.0–9.0] vs. 15.0 [9.3–21.3] cm H 2 O, p < .001), higher leak volume (268.5 ± 177.2 vs. 88.6 ± 99.6 ml, p = .038), and lower percentage of patients with Mallampati Classification IV (16.7 vs. 50.0%, p = .035), compared to the 16 patients who did not tolerate an SV trial. Twenty-two patients with a TTP of ≤ 9 cm H 2 O had higher percentage tolerating an SV trial than those with a TTP of > 9 cm H 2 O (86.4 vs. 35.3%, p = .002). The in vitro study demonstrated a strong correlation between upper airway patency and TTP, peak inspiratory flow, and tidal volume inhaled from the upper airway. Conclusions TTP, Mallampati classification, and leak volume can be used to assess upper airway patency for adult patients with tracheostomies undergoing an SV trial. A TTP of ≤ 9 cm H 2 O might indicate adequate upper airway patency to tolerate the SV trial.

In vitro study of the interaction between human gut microbiota and herbal extracts using willow bark extract as an example

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
EM Pferschy-Wenzig ◽  
K Koskinen ◽  
C Moissl-Eichinger ◽  
R Bauer
Keyword(s):  
Gut Microbiota ◽  
In Vitro Study ◽  
Vitro Study ◽  
Bark Extract ◽  
Herbal Extracts ◽  
Human Gut ◽  
Human Gut Microbiota ◽  
Willow Bark

Evaluation of the Release Behavior of the Dexamethasone Embedded in Polycarbonate Polyurethane Membranes: An In Vitro Study

2003 ◽  
Vol 48 (1) ◽  
pp. 7 ◽  
Author(s):  
Dong Hyun Kim ◽  
Sung Gwon Kang ◽  
Sang Soo Park ◽  
Don Haeng Lee ◽  
Gyu Baek Lee ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Release Behavior ◽  
Polyurethane Membranes
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