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Related Concept Videos

Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

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Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
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Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

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IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
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Layers of the Heart Wall01:15

Layers of the Heart Wall

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The heart wall comprises three distinct layers: the epicardium, myocardium, and endocardium. The outermost layer, the epicardium, is the visceral layer of the serous pericardium, featuring a thin, transparent mesothelial surface and an inner layer of areolar connective tissue with fat deposits that increase with age.
The myocardium, the thickest layer, consists of cardiac muscle cells interconnected by intercalated discs and crisscrossing connective tissue fibers. These muscle fibers contract...
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Aneurysm I: Introduction01:30

Aneurysm I: Introduction

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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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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...
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Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
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Related Experiment Video

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Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
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[Ventricular Free Wall Rupture].

Tomohiko Inui1, Goro Matsumiya

  • 1Department of Cardiovascular Surgery, Chiba University, Chiba, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery
|September 26, 2022
PubMed
Summary

Left ventricular free wall rupture (LVFWR) after acute myocardial infarction (AMI) is a life-threatening emergency. Prompt diagnosis and immediate surgical intervention are crucial for survival.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Emergency Medicine

Background:

  • Left ventricular free wall rupture (LVFWR) is a severe complication of acute myocardial infarction (AMI).
  • LVFWR often presents with unpredictable onset and abrupt circulatory collapse.
  • Cardiac tamponade is a common finding in LVFWR post-AMI.

Purpose of the Study:

  • To highlight the critical nature of LVFWR following AMI.
  • To emphasize the importance of timely diagnostic and therapeutic interventions.
  • To discuss management strategies including drainage and surgical repair.

Main Methods:

  • Review of clinical presentation and management of LVFWR.
  • Discussion of diagnostic findings such as cardiac tamponade.
  • Evaluation of treatment options including pericardial drainage and surgical repair.

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Main Results:

  • Prompt pericardial drainage is essential when cardiac tamponade is detected.
  • Surgical drainage may be required if percutaneous methods are ineffective.
  • Veno-arterial extracorporeal oxygenation (VA-ECMO) may not guarantee brain protection due to elevated venous pressure.
  • Suture-less repair can achieve hemostasis but carries a risk of recurrent rupture.

Conclusions:

  • Immediate surgical intervention is vital for suspected LVFWR.
  • Timely management, including drainage and surgical repair, can be life-saving.
  • Careful consideration of treatment options is necessary to optimize patient outcomes.