NDLI: Static forces variation and pressure distribution in laryngoscopy performed by straight and curved blades

Content Provider	IEEE Xplore Digital Library
Author	Cecchini, S. Silvestri, S. Carassiti, M. Agro, F.E.
Copyright Year	2009
Description	Author affiliation: Area of Anaesthesia, Faculty of Medicine, University Campus Bio-Medico of Rome, Italy (Carassiti, M.; Agro, F.E.) \|\| Faculty of Biomedical Engineering, University Campus Bio-Medico of Rome, Italy (Cecchini, S.; Silvestri, S.)
Abstract	A theoretical analysis of the forces acting on the laryngoscope during the lifting of the epiglottis is carried out by applying the basic principles of statics. The static model of a laryngoscope equipped with a straight and a curved blade and the forces variation, as a function of the introduction angle and of tissue reaction application point, are described. The pharyngeal tissues and epiglottis pressure distribution on the blade is obtained, with a $1mm^{2}$ resolution, by measurements performed in-vitro on a simulation mannequin, using straight and curved blades. The straight blade requires more effort than the curved one to obtain the same visualization of vocal cords, however forces exerted by using a laryngoscope with a curved blade do not vary linearly with the application point of tissue reaction. Average intensity of the tissue reaction has been found in the order of 32±11N. Pressure distribution is maximally concentrated on the tip of curved blades (0.5MPa on 5mm axial length), whereas it is more dispersed on straight blades (0.2MPa on 10mm axial length). The inclination of the handle also influences the effort of the operator: for both blades, from 0rad to 1.57rad, the lifting force shows a total variation of about 13% of the top value, the transversal forces vary less than 6% of the top value.
Starting Page	865
Ending Page	868
File Size	1127550
Page Count	4
File Format	PDF
ISBN	9781424432967
ISSN	1557170X
DOI	10.1109/IEMBS.2009.5334422
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blades Force measurement Pressure measurement Biomedical measurements In vitro Biological tissues USA Councils Performance evaluation Visualization Tongue pressure distribution measurement laryngoscopy
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Eye Stiffness Measurement by Probe Contact Method

Automated detection of asynchrony in patient-ventilator interaction

Muscle activation patterns during force generation of the index finger

A preliminary efficacy evaluation performed by opto-electronic plethysmography of asymmetric respiratory rehabilitation

Intracranial Pressure Variation Associated with Changes in End-Tidal CO2

Counted cycles method to quantify the onset response in high-frequency peripheral nerve block

Characterization of pre-curved needles for steering in tissue

Needle Insertion Force Estimation Model using Procedure-specific and Patient-specific Criteria

The Changes in Pulse Transit Time at Specific Cuff Pressures during Inflation and Deflation

Static forces variation and pressure distribution in laryngoscopy performed by straight and curved blades

Similar Documents

Eye Stiffness Measurement by Probe Contact Method

Automated detection of asynchrony in patient-ventilator interaction

Muscle activation patterns during force generation of the index finger

A preliminary efficacy evaluation performed by opto-electronic plethysmography of asymmetric respiratory rehabilitation

Intracranial Pressure Variation Associated with Changes in End-Tidal CO2

Counted cycles method to quantify the onset response in high-frequency peripheral nerve block

Characterization of pre-curved needles for steering in tissue

Needle Insertion Force Estimation Model using Procedure-specific and Patient-specific Criteria

The Changes in Pulse Transit Time at Specific Cuff Pressures during Inflation and Deflation

Static forces variation and pressure distribution in laryngoscopy performed by straight and curved blades