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Thoracocentesis. Clinical value, complications, technical problems, and patient experience.

T R Collins, S A Sahn

    Chest
    |June 1, 1987
    PubMed
    Summary

    This study evaluated the usefulness, complications, and patient experience of thoracocentesis in a university medical center. Researchers found that 92% of procedures provided clinically useful information, with most diagnostic categories being presumptive or nondiagnostic. Objective complications like pneumothorax and subjective issues like anxiety were common. The study highlights the importance of understanding the procedure’s limitations and the need for improved safety and training. These findings aim to guide better clinical use and patient care.

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    Area of Science:

    • Interventional pulmonology within diagnostic procedures
    • Thoracic medicine in clinical outcomes research

    Background:

    Thoracocentesis is a diagnostic procedure used to evaluate pleural effusions. Prior research has shown its utility in identifying underlying conditions through pleural fluid analysis. However, gaps remain regarding the frequency of diagnostic yield and the extent of complications. Existing studies have not fully quantified the proportion of thoracocentesis procedures that provide definitive diagnoses. Additionally, the subjective experience of patients during the procedure has not been systematically assessed. This gap motivated a study to evaluate clinical usefulness, complication rates, and patient experience. No prior work had resolved how frequently diagnostic categories shift with follow-up data. The procedure’s role in guiding clinical decisions remains partially unclear. Understanding these factors could improve clinical practice and patient safety. This paper contributes by offering a detailed analysis of outcomes across a large cohort.

    Purpose Of The Study:

    The study aimed to assess the clinical value of thoracocentesis in a university medical center setting. It focused on evaluating diagnostic yield, complication rates, and patient experience. The researchers sought to determine how often the procedure provided definitive or presumptive diagnoses. They also aimed to quantify the frequency of objective and subjective complications. The motivation was to inform clinical decision-making and improve procedural safety. Prior work had not fully addressed the diagnostic accuracy or patient discomfort associated with thoracocentesis. The study sought to clarify the procedure’s limitations and benefits. By analyzing outcomes in a large cohort, the researchers aimed to provide actionable insights for clinicians.

    Keywords:
    ThoracocentesisDiagnostic yieldPleural fluid analysisClinical outcomes

    Frequently Asked Questions

    According to the authors, 92% of thoracocentesis procedures provided clinically useful information.

    Eight of 78 patients had their diagnostic categories upgraded within 24 hours using sequential data analysis.

    Blood contamination occurred in 11% of procedures and is a significant issue affecting fluid analysis accuracy.

    Pleural fluid analysis, combined with clinical presentation, was used to categorize fluids as definitive, presumptive, or nondiagnostic.

    Related Experiment Videos

    Main Methods:

    The study involved a prospective evaluation of 129 thoracocentesis procedures in 86 patients. Pleural fluid analysis was combined with clinical presentation to categorize results. Researchers used sequential data analysis to assess diagnostic changes over time. Objective complications were recorded based on clinical observations. Subjective complications were gathered through patient self-reports. Technical problems were tracked during the procedure. The team categorized diagnostic outcomes as definitive, presumptive, or nondiagnostic. They also monitored how many procedures led to diagnostic upgrades within 24 hours.

    Main Results:

    Of 78 pleural fluids analyzed, 14 (18%) were definitive, 44 (56%) presumptive, and 20 (26%) nondiagnostic. Fourteen (18%) of the nondiagnostic fluids were still clinically useful. Six (8%) were not useful, leaving 92% of procedures with clinically relevant findings. Eight diagnostic categories were upgraded within 24 hours. Thirty-four objective complications occurred in 26 of 129 (20%) procedures. Pneumothorax was the most common objective complication at 15 cases (12%). Sixty-five subjective complications occurred in 56 of 123 (46%) procedures. Anxiety and site pain were the most frequent subjective issues.

    Conclusions:

    The authors conclude that diagnostic thoracocentesis provides clinically valuable information when used alongside patient presentation. They emphasize the procedure’s limitations in offering specific etiologic diagnoses. The study highlights the frequency of complications, particularly when performed by trainees. Operator underestimation of patient discomfort is a noted issue. Awareness of these findings could improve procedural safety and clinical use. The researchers propose that better understanding of diagnostic yield and complications is essential. They suggest that training and procedural oversight should be enhanced. These conclusions align with the observed data and the study’s goals.

    Anxiety was the most common subjective complication, reported in 21% of thoracocentesis procedures.

    The authors suggest that awareness of complications and patient discomfort could lead to improved procedural safety.