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

Cardiomyopathy VII: Pre and Post Operative Nursing Management

Cardiomyopathy VII: Pre and Post Operative Nursing Management

Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...

Cardiopulmonary Resuscitation II: ACLS Airway Management

Cardiopulmonary Resuscitation II: ACLS Airway Management

Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned under...

Decreased pulse rate

Decreased pulse rate

Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with bradycardia...

Depolarizing Blockers: Pharmocokinetics

Depolarizing Blockers: Pharmocokinetics

Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...

Suctioning the Nasopharyngeal Airway

Suctioning the Nasopharyngeal Airway

Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
Equipment Required

You might also read

Related Articles

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

Sort by

Same author

Critical flicker fusion frequency measurement through a chamber porthole.

Diving and hyperbaric medicine·2025

Same author

Critical flicker fusion frequency: confounders and caveats.

European journal of applied physiology·2025

Same author

Narcotic Nitrogen Effects Persist after a Simulated Deep Dive.

Medicina (Kaunas, Lithuania)·2024

Same author

Reply to Mankowska et al. Comment on "Muth et al. Assessing Critical Flicker Fusion Frequency: Which Confounders? A Narrative Review. <i>Medicina</i> 2023, <i>59</i>, 800".

Medicina (Kaunas, Lithuania)·2023

Same author

Assessing Critical Flicker Fusion Frequency: Which Confounders? A Narrative Review.

Medicina (Kaunas, Lithuania)·2023

Same author

Correction to: Diving ergospirometry with suspended weights: breathing- and fin-swimming style matter.

European journal of applied physiology·2022

Search research articles

Related Experiment Video

Updated: May 15, 2026

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Published on: May 9, 2013

Computer-assisted paranasal sinus operation induces diving bradycardia.

Jochen D Schipke¹, Sinclair Cleveland, Christian Caspers

¹Research Group Experimental Surgery, University Hospital, Düsseldorf, Germany. j.schipke@gmx.org

American Journal of Otolaryngology

|January 22, 2013

Summary

Unintentional stimulation of the ethmoidal nerve during computer-assisted sinus surgery can trigger a dangerous bradycardia and asystole. Surgeons must be aware of this reflex to prevent adverse cardiac events.

More Related Videos

Non-Intubated Video-Assisted Thoracoscopic Surgery

Non-Intubated Video-Assisted Thoracoscopic Surgery

Published on: May 26, 2023

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction

Published on: October 13, 2017

Related Experiment Videos

Last Updated: May 15, 2026

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Published on: May 9, 2013

Non-Intubated Video-Assisted Thoracoscopic Surgery

Non-Intubated Video-Assisted Thoracoscopic Surgery

Published on: May 26, 2023

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction

Published on: October 13, 2017

Area of Science:

Neurosurgery
Cardiology
Otolaryngology

Background:

The trigeminal nerve's branches can induce bradycardia if unintentionally stimulated during surgical procedures.
Computer-Assisted Surgery (CAS) is increasingly used in paranasal sinus operations.
Neurosurgeons must consider potential cardiac complications during these procedures.

Observation:

A 53-year-old female patient experienced significant heart rate and blood pressure drops during CAS ethmoidal sinus surgery.
Transient asystole occurred during the procedure, resolving upon instrument removal.
Bradycardia recurred with instrument reinsertion, necessitating atropine for completion.

Findings:

This case highlights the potential for direct ethmoidal nerve stimulation via CAS probes to cause exaggerated diving reflex.
The incidence of this reflex during neurosurgical procedures is reported between 10-18%.
This is the first reported instance of direct ethmoidal nerve stimulation during paranasal surgery causing asystole.

Implications:

Exaggeration of the diving reflex, even if typically cardioprotective, can be detrimental.
Awareness and monitoring are crucial to manage bradycardia and asystole during CAS sinus surgery.
This reflex may be implicated in unexplained cardiorespiratory events, including sudden death.