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Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

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Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
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Cardiac Catheterization III: Left Heart Catheterization01:24

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Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
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Cardiopulmonary Resuscitation III: AED Use01:23

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Introduction to AEDAn Automated External Defibrillator (AED) is a portable medical device that analyzes the heart's rhythm and, if necessary, delivers an electrical shock to help the heart re-establish an effective rhythm during sudden cardiac arrest (SCA). SCA occurs when the heart suddenly and unexpectedly stops beating, leading to a loss of blood flow to the brain and other vital organs. In such emergencies, time is of the essence, and using an AED, combined with Cardiopulmonary...
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Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
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Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Related Experiment Video

Updated: Jan 18, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
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Leadless Versus Transvenous Dual-Chamber Pacemakers: Real-World Evidence From AVEIR DR Coverage With Evidence

Monica Lo1, Anish K Amin2, Marcin Kowalski3,4

  • 1Arkansas Heart Hospital, Little Rock, Arkansas, USA.

Journal of Cardiovascular Electrophysiology
|January 16, 2026
PubMed
Summary

The AVEIR DR leadless pacemaker (LP) showed fewer device-related complications and reinterventions compared to transvenous pacemakers (TP) over six months, with similar short-term outcomes.

Keywords:
AVEIR DRleadless pacemakersoutcomesreinterventionssafetytransvenous pacemakers

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Area of Science:

  • Cardiovascular Medicine
  • Medical Devices
  • Health Outcomes Research

Background:

  • The AVEIR DR is an innovative dual-chamber leadless pacemaker (LP) utilizing implant-to-implant communication for continuous atrioventricular synchrony.
  • Evaluating the early real-world safety and comparative effectiveness of the AVEIR DR LP is crucial.

Purpose of the Study:

  • To compare the safety and efficacy of the AVEIR DR leadless pacemaker (LP) against traditional dual-chamber transvenous pacemakers (TP).
  • The study aimed to assess complications, reinterventions, heart failure hospitalizations, and mortality rates between the two pacemaker types.

Main Methods:

  • A comparative analysis of de novo leadless pacemaker (LP) and transvenous pacemaker (TP) patients using Medicare Fee-for-Service claims data.
  • Outcomes evaluated included 30-day and 6-month complications, reinterventions, heart failure hospitalizations, and all-cause mortality, with adjustments for patient demographics and comorbidities.

Main Results:

  • While 30-day outcomes were comparable, the AVEIR DR LP demonstrated significantly lower device-related complications (2.0% vs. 3.9%) and overall 6-month complications (4.1% vs. 6.9%) compared to TP.
  • The leadless pacemaker group also showed reduced 6-month device reinterventions (2.1% vs. 4.3%) and device-related complications (2.8% vs. 5.9%).
  • No significant differences were observed in 6-month mortality or heart failure hospitalizations between the LP and TP groups.

Conclusions:

  • Despite a higher comorbidity burden in the leadless pacemaker cohort, the AVEIR DR LP exhibited superior safety profiles regarding device-related complications and reinterventions at six months.
  • The study suggests comparable short-term safety and mortality for AVEIR DR LP versus TP, with significant long-term advantages in reducing device-related issues.