Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Application of Integration: Problem Solving

Application of Integration: Problem Solving

The process of breathing involves the periodic intake and expulsion of air, known as the respiratory cycle, which typically lasts about five seconds. Modeling the volume of air inhaled into the lungs as a function of time provides insight into both the dynamics and efficiency of pulmonary ventilation. This volume is determined by integrating the airflow rate over time, which captures the cumulative effect of air entering the lungs.Sinusoidal Model of AirflowAirflow during respiration is not...

Sites for measuring blood pressure

Sites for measuring blood pressure

Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement

Pressure Relationships in Thoracic Cavity

Pressure Relationships in Thoracic Cavity

Breathing, otherwise known as pulmonary ventilation, is the process of air movement into and out of the lungs. The main mechanisms propelling pulmonary ventilation are atmospheric pressure (Patm), intra-pulmonary (Ppul ) or intra-alveolar pressure (Palv) within the alveoli, and intrapleural pressure (Pip) within the pleural cavity.
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs during...

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:

Assessment of blood pressure in brachial artery(two-step method)

Assessment of blood pressure in brachial artery(two-step method)

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Expert Consensus Statement on Acoustic Metrics for Swallowing Dysfunction Screening in Older Adults: A Delphi Study.

Journal of voice : official journal of the Voice Foundation·2026

Same author

T-Graft for Single Stage Laryngotracheal Reconstruction: Revisiting a Previously Described Technique.

Laryngoscope investigative otolaryngology·2026

Same author

Autoimmune Disorders Affecting the Larynx: Review of Laryngoscopic Findings and Approach to Multidisciplinary Management.

The Annals of otology, rhinology, and laryngology·2026

Same author

Thyroid Cartilage Hemangioma: Presentation, Imaging, Pathology, and Approach to Resection and Reconstruction.

The Annals of otology, rhinology, and laryngology·2025

Same author

Factors Directing Treatment Decision-Making in the Management of Glottic Insufficiency.

The Laryngoscope·2025

Same author

<i>FOXP2</i> Expression in Rodent, Rhesus Monkey, and Human Brainstem.

Journal of speech, language, and hearing research : JSLHR·2025

Search research articles

Related Experiment Video

Updated: Jul 8, 2026

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

Published on: February 21, 2011

Reliable time to estimate subglottal pressure.

Matthew R Hoffman¹, Christopher D Baggott, Jack Jiang

¹Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53706, USA.

Journal of Voice : Official Journal of the Voice Foundation

|January 22, 2008

Summary

This summary is machine-generated.

Accurately measuring subglottal pressure (P(s)) is improved by timing measurements 150 milliseconds after balloon valve inflation. This method reduces subjective analysis and enhances data reliability for clinical applications.

More Related Videos

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

Published on: December 3, 2016

Related Experiment Videos

Last Updated: Jul 8, 2026

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)

Published on: February 21, 2011

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

Published on: December 3, 2016

Area of Science:

Physiology
Biomedical Engineering

Background:

Measuring subglottal pressure (P(s)) using airflow interruption can be unreliable due to unsteady pressure readings and subjective interpretation of laryngeal reflexes.
Clinician subjectivity in identifying pressure plateaus can affect patient effort and glottal configuration, impacting data accuracy.

Purpose of the Study:

To validate a consistent time point for estimating subglottal pressure (P(s)) during airflow interruption, independent of subjective analysis.
To improve the precision and reliability of P(s) measurements in clinical settings.

Main Methods:

Utilized theoretical (ideal gas model) and physical (mechanical pseudolung) models to determine the equilibration time for supraglottal pressure with P(s).
Evaluated the consistency of pressure measurements at approximately 150 milliseconds post-balloon valve inflation.
Conducted human trials with 25 subjects to compare intrasubject variability between the proposed method and traditional plateau analysis.

Main Results:

Both theoretical and physical models confirmed the validity of measuring P(s) at 150 milliseconds after 500-millisecond interruption.
Human trials showed significantly lower intrasubject standard deviation (0.66+/-0.37cm H(2)O) using the 150ms method compared to plateau analysis (1.11+/-0.48cm H(2)O).
The proposed method demonstrated a marked improvement in measurement reliability while maintaining validity.

Conclusions:

Estimating subglottal pressure (P(s)) at a consistent 150 milliseconds after balloon valve inflation provides a more objective and reliable measure.
This modification enhances the precision of intrasubject data, reducing reliance on subjective clinical interpretation.
The optimized interruption model offers a clinically feasible advancement for accurate P(s) estimation.