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Endoscopic Studies II: Thoracocentesis01:26

Endoscopic Studies II: Thoracocentesis

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Thoracentesis(Thoracocentesis), commonly known as pleural tap, is a medical procedure where a 22 gauge needle is inserted into the pleural space, the area between the lung and chest wall. This procedure is commonly performed to diagnose or treat various respiratory disorders.
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Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
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Pneumothorax II: Pathophysiology01:08

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Pneumothorax means the presence of air in the pleural space — the thin potential gap between the visceral and parietal pleura. This condition disrupts the normal pressure balance that keeps the lungs inflated, leading to partial or complete collapse of the affected lung.Normal physiologyUnder normal conditions, the pleural space maintains a slightly negative intrapleural pressure, which keeps the lungs expanded against the chest wall. This negative pressure creates a delicate balance...
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A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
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Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Atelectasis develops when alveoli lose their air and collapse inward. Because lung tissue is naturally elastic, these air sacs shrink rather than remaining open. Collapsed alveoli are no longer ventilated, reducing their role in gas exchange. Blood flow may continue in these regions, creating a ventilation–perfusion mismatch. Clinical findings include decreased breath sounds, dullness to percussion, reduced chest expansion, and decreased tactile fremitus as sound transmission through...
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Updated: May 6, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Needle thoracentesis decompression: observations from postmortem computed tomography and autopsy.

Howard T Harcke, Robert L Mabry, Edward L Mazuchowski

    Journal of Special Operations Medicine : a Peer Reviewed Journal for SOF Medical Professionals
    |November 15, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Needle thoracentesis decompression (NTD) is a life-saving procedure for tension pneumothorax. A review of postmortem imaging found the lateral approach for NTD was more successful than the anterior approach, suggesting a guideline revision.

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    Area of Science:

    • Emergency Medicine
    • Trauma Surgery
    • Medical Imaging

    Background:

    • Needle thoracentesis decompression (NTD) is a critical intervention for tension pneumothorax.
    • Current guidelines recommend anterior (2nd intercostal space, midclavicular line) or lateral (4th/5th intercostal space, anterior axillary line) insertion sites.

    Purpose of the Study:

    • To evaluate the effectiveness of different needle thoracentesis decompression (NTD) insertion sites using postmortem imaging.
    • To compare the success rates of anterior versus lateral NTD approaches.

    Main Methods:

    • A retrospective review of 16 cases involving 23 emergency NTD procedures.
    • Analysis of postmortem computed tomography (CT) scans and autopsy findings to confirm catheter placement and pleural cavity penetration.

    Main Results:

    • Overall success rate for confirmed NTD placements was 59% (10 of 17).
    • The lateral approach demonstrated a higher success rate (4 of 4) compared to the anterior approach (6 of 13).
    • Catheter malposition in soft tissue occurred in 6 cases, with equivocal pleural entry.

    Conclusions:

    • The lateral approach for needle thoracentesis decompression (NTD) appears more successful than the anterior approach.
    • Findings support revising Tactical Combat Casualty Care Guidelines to emphasize the lateral approach as a primary option.