Related Experiment Video
Updated: Jun 19, 2025
05:36
Standardized Model of Ventricular Fibrillation and Advanced Cardiac Life Support in Swine
Published on: January 30, 2020
7.7K
Understanding the Physiological Connection: Cardiac Arrest Following Prone Positioning
Taizoon Q Dhoon1, Anil Tiwari2, Evan Villaluz2
1Anesthesiology, University of California, Irvine (UCI) Health, Orange, USA.
Cureus
|July 25, 2024
Summary
Prone positioning during ERCP can cause dangerous physiological changes, including cardiac arrest. Patients with heart conditions may not tolerate this position, requiring careful consideration and potential supine positioning for safety.
Area of Science:
- Medical procedures
- Patient positioning
- Cardiopulmonary physiology
Background:
- Prone positioning is common in ORs and procedural suites.
- Physiological changes during prone positioning are often underestimated.
- Familiarity with prone position's physiological effects is crucial for clinicians.
Observation:
- Prone positioning aids ERCP visualization but can decrease preload, IVC filling, and cardiac output.
- It increases intrathoracic pressure and mediastinal compression.
- Anesthetics and positive pressure ventilation further impact cardiopulmonary function, increasing RV strain.
Findings:
- A 73-year-old male experienced cardiac arrest after prone positioning for ERCP.
- The patient was successfully resuscitated after repositioning to supine.
- The ERCP was completed with the patient in the supine position.
Implications:
- Caution is advised for patients with RV dysfunction, pulmonary hypertension, or preload dependency in prone position.
- Underappreciation of prone positioning's physiological effects can lead to adverse events.
- Individual patient factors and potential risks necessitate careful consideration of positioning during procedures.
Related Concept Videos
01:11Anatomical Positions
10.0K
In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
10.0K
01:19Electrophysiology of Normal Cardiac Rhythm
2.8K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
2.8K
01:28Electrocardiogram Fundamentals
554
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
554
01:30Cardiac Action Potential
1.2K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
1.2K