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Related Concept Videos

Endocarditis I: Introduction01:25

Endocarditis I: Introduction

Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
Endocarditis III: Medical Management01:18

Endocarditis III: Medical Management

Infective endocarditis management involves a multifaceted approach encompassing infection prevention, lifestyle modifications, pharmacological therapy, and surgical management.Infection Prevention:Hand Hygiene: Thorough handwashing is crucial to prevent the spread of infection. Hand hygiene should be performed regularly, especially before and after using the restroom.Oral Hygiene: Good oral hygiene is essential. It includes brushing teeth immediately after waking up and before bed, flossing...
Endocarditis IV: Nursing Management01:29

Endocarditis IV: Nursing Management

Infective endocarditis (IE) is a chronic infection of the heart's endocardium, primarily affecting the heart valves. A detailed nursing assessment for a patient with IE involves collecting subjective and objective data to ensure an accurate diagnosis and timely intervention.Subjective DataThe nurse gathers information about the patient's symptoms and complaints during the subjective assessment. Patients with infective endocarditis often report non-specific symptoms that can mimic other...
Pericarditis I: Introduction01:22

Pericarditis I: Introduction

Pericarditis is defined as the inflammation of the pericardium, the thin, sac-like membrane surrounding the heart. This condition can cause significant chest pain and other symptoms, often necessitating medical intervention. The pericardium has two layers: the inner visceral layer and the outer parietal layer, separated by a small amount of fluid that reduces friction during heartbeats.Types of PericarditisPericarditis can be classified into several types based on the duration and nature of the...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...

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Related Experiment Videos

Pacemaker endocarditis caused by Propionibacterium acnes: a case report.

Warren Noel1, Nadjib Hammoudi, Elzbieta Wegorowska

  • 1Internal Medicine Department, AP-HP, Hôpital Tenon, Paris, France.

Heart & Lung : the Journal of Critical Care
|June 2, 2012
PubMed
Summary

A pacemaker infection caused by Propionibacterium acnes can present with vague symptoms and be mistaken for contamination. Early diagnosis via blood cultures and echocardiography is crucial for device-related endocarditis.

Related Experiment Videos

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Medical Microbiology

Background:

  • Late-onset device-related endocarditis presents diagnostic challenges.
  • Propionibacterium acnes is a common skin bacterium often dismissed as a contaminant.

Observation:

  • A 74-year-old man with a pacemaker developed fatigue, confusion, and thrombocytopenic purpura.
  • Echocardiography showed a large mass on pacemaker leads; blood cultures grew P. acnes.
  • Surgical vegetation analysis confirmed P. acnes via 16S rRNA gene PCR.

Findings:

  • P. acnes was identified as the causative agent of late-onset pacemaker lead endocarditis.
  • Absence of fever and vague symptoms complicated the initial diagnosis.
  • 16S rRNA gene PCR confirmed P. acnes in cardiac vegetations.

Implications:

  • Highlights the importance of considering P. acnes in device-related endocarditis, even with negative initial cultures.
  • Emphasizes the diagnostic utility of echocardiography and molecular methods in challenging endocarditis cases.
  • Suggests increased vigilance for P. acnes in patients with pacemakers presenting with non-specific symptoms.