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Related Concept Videos

Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
Aortic Regurgitation IV: Nursing Management01:17

Aortic Regurgitation IV: Nursing Management

A nurse managing a patient with aortic regurgitation begins with a comprehensive assessment, including a review of the patient's medical history, family history, and lifestyle factors. During the cardiac examination, the nurse listens for heart sounds and checks for signs of valve abnormalities. The nurse also observes for symptoms such as dyspnea, orthopnea, and paroxysmal nocturnal dyspnea and assesses the patient's endurance and daily activity tolerance.Based on the findings, the nurse...
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
Mitral Stenosis IV: Nursing Management01:27

Mitral Stenosis IV: Nursing Management

A comprehensive nursing assessment is essential for patients with valvular heart disease, which involves any dysfunction of the heart valves that could impact blood flow and overall heart function.Subjective Data Collection:Chief Complaint and Present Illness: Start with the patient's primary concerns, focusing on the onset, duration, and progression of cardiac symptoms such as dyspnea, fatigue, chest pain, and palpitations.Past Medical History: Collect detailed information on any previous...
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...

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Related Experiment Video

Updated: Jun 12, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Published on: December 11, 2017

Cardiac resynchronization therapy for low-flow, low-gradient aortic stenosis.

Yuval Konstantino1, Peter J Zimetbaum, Jeff Hsing

  • 1The Cardiovascular Institute, Beth Israel Deaconess Medical Center, Baker 4, 185 Pilgrim Road, Boston, MA 02215, USA. ykonstan@bidmc.harvard.edu

European Journal of Heart Failure
|May 25, 2010
PubMed
Summary

Low-flow, low-gradient aortic stenosis with left ventricular (LV) dysfunction presents challenges. Biventricular pacing improved a patient with severe LV dysfunction and heart failure.

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Area of Science:

  • Cardiology
  • Cardiac Electrophysiology

Background:

  • Low-flow, low-gradient aortic stenosis is complex, often involving reduced left ventricular (LV) contractile function.
  • Ventricular dyssynchrony from right ventricular pacing can exacerbate LV dysfunction and heart failure symptoms.

Observation:

  • A case report details a patient with severe LV dysfunction and dyssynchrony due to right ventricular pacing.
  • The patient presented with decompensated heart failure superimposed on low-flow, low-gradient aortic stenosis.

Findings:

  • Upgrading the patient's dual-chamber pacemaker to a biventricular pacemaker was performed.
  • This intervention led to significant improvements in echocardiographic, hemodynamic, and clinical parameters.

Implications:

  • Biventricular pacing can be an effective management strategy for selected high-risk patients with low-flow, low-gradient aortic stenosis and LV dysfunction.
  • This approach offers a potential solution for improving cardiac function and clinical outcomes in this challenging patient population.