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Increased pulse rate01:17

Increased pulse rate

Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

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 minute.

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Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Published on: February 17, 2018

Tachycardia-induced heart failure.

Jitenbhai J Patel, Charles T Whittaker

    The Permanente Journal
    |April 5, 2011
    PubMed
    Summary

    Treating rapid heart rhythms (tachyarrhythmias) can reverse heart failure in many patients. Early diagnosis and treatment of tachyarrhythmias, like atrial fibrillation, can improve heart function within months.

    Area of Science:

    • Cardiology
    • Electrophysiology

    Background:

    • Heart failure is often linked to tachyarrhythmias.
    • Tachycardia-induced heart failure involves left ventricular dilation and systolic dysfunction.
    • Chronic atrial fibrillation is a common cause.

    Purpose of the Study:

    • To highlight the reversibility of heart failure caused by tachyarrhythmias.
    • To emphasize the importance of diagnosing and treating tachyarrhythmias in primary care.

    Main Methods:

    • Review of clinical characteristics and outcomes.
    • Focus on the impact of arrhythmia treatment on cardiac function.

    Main Results:

    • Heart failure associated with tachyarrhythmias is often reversible.

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    Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
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    Published on: February 17, 2018

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  • Treatment can ameliorate debilitating symptoms.
  • Systolic function improvement occurs within weeks, with normalization in months.

    • Conclusions:

    • Tachyarrhythmias are a treatable cause of heart failure.
    • Primary care physicians play a crucial role in identifying and managing these conditions.
    • Effective management leads to significant cardiac recovery.