Syncope pathophysiology: Difference between revisions
No edit summary |
No edit summary |
||
| Line 10: | Line 10: | ||
*Atypical forms | *Atypical forms | ||
Each of these categories have different triggers that lead to the presentation of syncope. Shown below a table for each syncope form and its triggers. Note that in any trigger, different mechanisms may be involved in its presentation, such as in micturition, where different pathways participate. | Each of these categories have different triggers that lead to the presentation of syncope. Shown below a table for each syncope form and its triggers. Note that in any trigger, different mechanisms may be involved in its presentation, such as in micturition, where different pathways participate. | ||
|-bgcolor="LightBlue" | |||
| '''Syncope form''' | |||
|bgcolor="Beige"| | |||
* '''Trigger:''' age and gender → chief complaint (time frame) → past medical history → physical exam (vitals) → ECG → image (physical exam, biopsy, CXR, CT) → Lab results | |||
* Commonly asked question prompt (i.e. What is the most likely)? {{Main| How to create a board review question#USMLE Step 1 Question Format}} | |||
|- | |||
==References== | ==References== | ||
Revision as of 16:41, 26 December 2013
|
Syncope Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Syncope pathophysiology On the Web |
|
American Roentgen Ray Society Images of Syncope pathophysiology |
|
Risk calculators and risk factors for Syncope pathophysiology |
Overview
Blood pressure is the main determinant for the presentation of syncope. Blood pressure is determined by cardiac output and total peripheral vascular resistance, and hence, any disturbances with any of these variables may lead to the presentation of syncope.
Pathophysiology
Syncope is a entity in which loss of conscience due to cerebral hipooperfusion presents. There are several pathways to explain its pathophysiology. Syncope can be manifested as 4 categories:
- Vasovagal syncope
- Situtational syncope
- Carotid sinus syncope
- Atypical forms
Each of these categories have different triggers that lead to the presentation of syncope. Shown below a table for each syncope form and its triggers. Note that in any trigger, different mechanisms may be involved in its presentation, such as in micturition, where different pathways participate. |-bgcolor="LightBlue" | Syncope form |bgcolor="Beige"|
- Trigger: age and gender → chief complaint (time frame) → past medical history → physical exam (vitals) → ECG → image (physical exam, biopsy, CXR, CT) → Lab results
- Commonly asked question prompt (i.e. What is the most likely)?
|-