Related Experiment Video
Updated: Jan 11, 2026
14:09
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Published on: March 21, 2013
21.6K
Research Progress on Situational Syncope
Qiqi Deng1,2, Yuwen Wang1, Fang Li1
1Department of Pediatric Cardiovasology, Children's Medical Center, The Second Xiangya Hospital, Central South University, Changsha 410011, China.
Journal of Child Neurology
|November 12, 2025
Summary
Situational syncope, a type of neurally mediated syncope, presents differently in adults and children. While generally having a good prognosis, it can cause serious cardiovascular events in those with pre-existing heart conditions.
Area of Science:
- Cardiology
- Neurology
- Internal Medicine
Background:
- Situational syncope is a specific form of neurally mediated syncope triggered by particular circumstances.
- Its causes and presentation differ significantly between adult and pediatric populations.
Purpose of the Study:
- To review the etiologic variations, clinical features, and management strategies for situational syncope.
- To highlight age- and sex-specific differences in situational syncope.
- To discuss potential adverse events and prognosis.
Main Methods:
- Literature review and synthesis of existing studies on situational syncope.
- Analysis of etiological factors, clinical manifestations, and treatment modalities.
- Comparison of findings across different age groups (adults vs. children) and sexes.
Main Results:
- Adults commonly experience situational syncope during micturition and defecation.
- Children frequently experience it during flag-raising, micturition, and defecation.
- Treatment encompasses nonpharmacologic, pharmacologic, and surgical approaches.
- Adverse events are rare, with a good prognosis unless cardiovascular disease is present.
Conclusions:
- Situational syncope exhibits distinct characteristics based on age and triggers.
- Effective management strategies are available, tailored to individual patient profiles.
- Awareness of potential cardiovascular complications is crucial for patients with underlying heart conditions.
Related Concept Videos
01:17Measurement of Blood Pressure
2.6K
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
2.6K
01:22Pathophysiology of Vomiting
2.6K
Vomiting is a complex physiological response to expel harmful or irritating substances from the body. It's a defensive mechanism triggered by stimuli like poisons, microbial toxins, cytotoxic drugs, and mechanical abdominal distension. The process is centrally coordinated by the vomiting (or emetic) center located in the medulla of the brainstem. This area, rich in muscarinic M1, histamine H1, neurokinin 1 (NK1), and serotonin 5-HT3 receptors, coordinates the act of vomiting through...
2.6K
01:30Acute Coronary Syndrome III: Diagnostic Studies
200
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
200
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
258
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
258