Rare case of Nocardia asteroides pericarditis in a human immunodeficiency virus-infected patient

Sadao Jinno1, Tanawat Jirakulaporn, Matthew J Bankowski

  • 1University of Hawaii Internal Medicine Program, Honolulu, HI 96814, USA. sadao@gmail.com

Insights

Nocardia asteroides, a bacterium, was identified in pericardial fluid from an HIV-infected patient after a long culture period. This delay impacted treatment, highlighting the need for a faster diagnostic algorithm.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Human Virology

Background:

  • Nocardia asteroides infections can occur in immunocompromised individuals, including those with human immunodeficiency virus (HIV).
  • Pericardial effusion is a potential complication in HIV-infected patients, requiring accurate diagnosis for effective management.

Observation:

  • Nocardia asteroides was isolated from the pericardial fluid of an HIV-infected patient.
  • The isolation required a prolonged culture period, delaying diagnosis.

Findings:

  • The extended time for Nocardia spp. culture and identification influenced clinical decisions and patient care.
  • A diagnostic algorithm for Nocardia in pericardial fluid is proposed to expedite results.

Implications:

  • Timely identification of Nocardia species in pericardial fluid is crucial for appropriate and prompt treatment in HIV patients.
  • Implementing a standardized microbiological workup algorithm can improve patient outcomes by reducing diagnostic delays.

Related Concept Videos

Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
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...
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
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...
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...