Related Experiment Video
Updated: Aug 11, 2026

05:20
A Murine Model of Ischemic Retinal Injury Induced by Transient Bilateral Common Carotid Artery Occlusion
Published on: November 12, 2020
Bradycardia after orbital injury. Case report
1Department of Maxillofacial Surgery, Fakultná Nemocnica, Bratislava, Czechoslovakia.
International Journal of Oral and Maxillofacial Surgery
|February 1, 1993
Summary
Orbital trauma can trigger the oculocardiac reflex, leading to severe bradycardia. This case highlights the importance of recognizing this reflex in patients with eye injuries.
Area of Science:
- Ophthalmology
- Cardiology
- Neurology
Background:
- Orbital trauma is a common occurrence.
- The oculocardiac reflex is a known physiological response.
Observation:
- A patient presented with severe bradycardia after experiencing orbital trauma.
- The bradycardia was directly attributed to the oculocardiac reflex.
Findings:
- The oculocardiac reflex can manifest as significant bradycardia following orbital trauma.
- This reflex involves the trigeminal and vagus nerves.
Implications:
- Clinicians should be vigilant for bradycardia in patients with orbital trauma.
- Prompt recognition and management of the oculocardiac reflex are crucial for patient outcomes.
Related Concept Videos
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism, and...
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism, and...
Dysrhythmias IV: Characteristics of Bradyarrhythmias
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
Cardiopulmonary Resuscitation IV: Pharmacological Management
Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...

