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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
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Definition and Symptoms: Angina (angina pectoris) is chest pain or discomfort caused by myocardial ischemia, which occurs when the heart muscle receives insufficient oxygen-rich blood. It typically manifests as pressing, squeezing, or crushing sensations in the chest and may radiate to the shoulders, arms, neck, jaw, or back.Primary Cause: In a healthy state, the coronary arteries can dilate (widen) to increase blood flow and meet the increased oxygen demand during physical activity or...
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Anatomy of the Heart01:27

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The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
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Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
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The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
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Stung to the Heart.

Himmatrao Saluba Bawaskar1, Pramodini H Bawaskar1, Parag H Bawaskar2

  • 1Bawaskar Hospital and Clinical Research Centre, Mahad, Raigad Maharashtra, India.

JACC. Case Reports
|January 17, 2022
PubMed
Summary
This summary is machine-generated.

Scorpion stings can cause severe heart problems, including ventricular tachycardia. Prompt treatment with magnesium sulfate can help, and Brugada pattern may appear on ECG after cardioversion.

Keywords:
Brugada patternECG, electrocardiogramVT, ventricular tachycardiascorpion stingventricular tachycardia

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Area of Science:

  • Cardiology
  • Toxicology
  • Emergency Medicine

Background:

  • Scorpion envenomation is a significant cause of cardiovascular morbidity.
  • Cardiogenic shock and ventricular arrhythmias are known complications of certain scorpion stings.

Observation:

  • A 48-year-old female presented with cardiogenic shock following a scorpion sting.
  • Initial management included electrical cardioversion, which was unsuccessful in reverting ventricular tachycardia.

Findings:

  • Ventricular tachycardia was successfully treated with intravenous magnesium sulfate.
  • Post-treatment electrocardiogram revealed a Brugada pattern, suggesting an underlying electrical abnormality unmasked by the envenomation or its treatment.

Implications:

  • This case highlights the potential for scorpion stings to induce severe cardiac arrhythmias and transient electrocardiographic changes.
  • Magnesium sulfate should be considered in managing scorpion sting-induced ventricular tachycardia.
  • The emergence of a Brugada pattern warrants further investigation into predisposing factors and long-term cardiac risk.