Related Experiment Video
Updated: Feb 14, 2026

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
Published on: January 5, 2016
HIV Positivity per se Does Not Affect Tympanoplasty Outcomes
Es-Hak Bedri1,2, Asnake Bitew3, Miriam Redleaf4
11 University of Illinois Hospital and Health Sciences System, Chicago, Illinois, USA.
HIV+ patients with CD4 counts over 400 can safely undergo tympanoplasty with outcomes comparable to HIV-negative individuals. These ear surgeries show effective tympanic membrane closure and hearing improvement without increased complications.
Area of Science:
- Otolaryngology
- Infectious Diseases
- Surgical Outcomes
Background:
- Lack of clear surgical protocols for otologic procedures in HIV+ patients.
- Need for evidence-based guidelines for managing ear conditions in immunocompetent HIV+ individuals.
Purpose of the Study:
- To evaluate the efficacy and safety of simple tympanoplasty and type III tympanoplasty in HIV+ patients with CD4 counts >400 cells/cc.
- To compare surgical outcomes in HIV+ patients with a healthy control group.
Main Methods:
- Retrospective review of 32 HIV+ patients and 32 controls undergoing tympanoplasty.
- Analysis of otologic conditions, operative results, and hearing outcomes.
- Comparison of tympanic membrane closure rates and air-bone gap improvements.
Main Results:
- Equivalent demographic and perforation characteristics between HIV+ and control groups.
- High tympanic membrane closure rates (30/32) in both groups after one operation.
- Significant and comparable improvements in air-bone gaps (22 dB HIV+ vs. 26 dB controls) and no significant difference in hearing change between groups.
- Absence of surgical complications in either group.
Conclusions:
- Simple tympanoplasty and type III tympanoplasty are safe and effective for HIV+ patients with CD4 counts >400 cells/cc.
- Outcomes, including hearing improvement and closure rates, are equivalent to those in healthy controls.
- These procedures offer acceptable results for selected HIV+ patients.
Related Concept Videos
Role of Affect in Interpersonal Attraction
The Influence of Affect on Cognition
The Influence of Cognition on Affect
Predicting Reaction Outcomes
Outcomes of Glycolysis
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

