Related Experiment Video
Updated: Mar 21, 2026
04:41
Knee Arthrocentesis in Adults
Published on: February 25, 2022
10.2K
NEVER SEEMS TO GROW PAINS: A CASE OF SUSPECTED PSEUDOSEPTIC ARTHRITIS
M Alrehaili1, A Harless1, L Bateman1
1Department of Internal Medicine, Ochsner Clinic Foundation, New Orleans, Louisiana.
Summary
Pseudoseptic arthritis presents with high white blood cell counts in joint fluid but sterile cultures. Differentiating it from septic arthritis is crucial for appropriate patient care and avoiding unnecessary antibiotics.
Area of Science:
- Rheumatology
- Infectious Diseases
- Immunology
Background:
- Pseudoseptic arthritis is an acute inflammatory condition.
- It is characterized by sterile synovial fluid cultures despite elevated white blood cell (WBC) counts (>100,000) and a high percentage of polymorph neutrophils (>75%).
- This condition commonly affects individuals with pre-existing inflammatory or immune system disorders.
Purpose of the Study:
- To define pseudoseptic arthritis.
- To highlight its association with underlying immune and inflammatory conditions.
- To emphasize the importance of early differentiation from true septic arthritis.
Main Methods:
- Clinical case review.
- Synovial fluid analysis.
- Differential diagnosis of inflammatory arthritis.
Main Results:
- Pseudoseptic arthritis exhibits inflammatory markers similar to septic arthritis but lacks microbial evidence.
- Patients often have a history of autoimmune or immune-compromising conditions.
- Distinguishing pseudoseptic from septic arthritis is key.
Conclusions:
- Early identification of pseudoseptic arthritis is vital.
- Accurate diagnosis can prevent unnecessary antibiotic use.
- Improved patient outcomes are achieved through appropriate management strategies.
More Related Videos
Related Concept Videos
01:14Atypical Pneumonia
9
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...
9
01:27Acute Pyelonephritis I: Introduction
1.1K
Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...
1.1K
01:23Rheumatic Heart Disease I: Introduction
797
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
797
01:28Acute Pyelonephritis II: Diagnostic Studies and Management
616
Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
616
01:30Bacterial Phylum Spirochaetes
1.1K
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
1.1K
01:25Endocarditis II: Clinical Features of Infective Endocarditis
718
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...
718