Related Experiment Video

Updated: May 27, 2025

Induction of Acute Skeletal Muscle Regeneration by Cardiotoxin Injection
07:39

Induction of Acute Skeletal Muscle Regeneration by Cardiotoxin Injection

Published on: January 1, 2017

21.9K

Another potential etiology for cardiac manifestation after snakebite

Yoshihiro Aoki1,2, Chris Smith3,4, Koya Ariyoshi3,5

  • 1Coordination Office for Emergency Medicine and International Response, Acute and Critical Care Center, Nagasaki University Hospital, Nagasaki, Japan. yaoki-hki@umin.ac.jp.

Tropical Medicine and Health
|February 19, 2025
PubMed

Insights

Takotsubo cardiomyopathy (TTC) may be an alternative diagnosis for acute myocardial infarction after a hump-nosed viper bite. This condition, triggered by venom and stress, presents with cardiac dysfunction but resolves fully, differing from heart attacks.

Area of Science:

  • Cardiology
  • Toxicology
  • Emergency Medicine

Background:

  • A recent case report of acute myocardial infarction following a hump-nosed viper bite prompted this discussion.
  • The patient exhibited symptoms including delayed chest tightness, elevated troponin levels, and ECG changes, with normal coronary arteries.

Discussion:

  • Takotsubo cardiomyopathy (TTC) is proposed as an alternative diagnosis due to the patient's presentation and complete recovery within three months.
  • Snakebite-associated TTC may result from sympathetic surge, venom cardiotoxicity, or inflammatory mediators.
  • Excessive catecholamine release during envenomation can precipitate transient cardiac dysfunction characteristic of TTC.

Key Insights:

  • The association between snakebites and TTC is supported by multiple case reports.
  • Recognizing TTC in snakebite victims is crucial as its management and prognosis differ from acute coronary syndrome.
  • The patient's normal coronary arteries and full cardiac recovery strongly indicated TTC over acute myocardial infarction.

Outlook:

  • Further research into the pathophysiological mechanisms linking snakebites and TTC is warranted.
  • Enhanced diagnostic strategies are needed to differentiate TTC from acute myocardial infarction in snakebite cases.
  • Understanding this association can improve treatment protocols and patient outcomes in regions with venomous snake populations.

More Related Videos

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus08:28

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus

Published on: April 5, 2011

17.7K
Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model09:14

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model

Published on: June 18, 2021

2.2K

Related Concept Videos

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
41
Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
82
Allergic Reactions02:06

Allergic Reactions

Overview
27.2K
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
879
Cross-reactivity00:42

Cross-reactivity

Overview
30.9K
Local Anesthetics: Adverse Effects01:12

Local Anesthetics: Adverse Effects

While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
385