2025年2月1日 · In blunt trauma, pneumothorax is caused by laceration of the lung due to rib fractures or alveolar rupture due to rapid pressure changes. Penetrating trauma causes pneumothorax via direct entrance of external air into the pleural space and lung laceration. The diagnosis of PTX can be made by history and physical exam.

2021年11月1日 · PTX can be diagnosed on US based on the absence of lung sliding, absence of comet-tail artifact (B-lines), and presence of lung point. Lung sliding refers to the dynamic movement of the visceral pleura on the parietal pleura during respiration and is best visualized at the lung apex of a supine patient.

2014年6月16日 · What are the sonographic signs used to detect a PTX on ultrasound? [1] Lack of lung sliding: Back and forth movement of parietal and visceral pleura sliding on each other with normal respiration

2023年10月1日 · Spontaneous Pneumothorax: Occurs without preceding trauma. It can be further divided into two types: primary--those that occur in generally healthy individuals without underlying lung disease, and secondary--those that occur in individuals with underlying lung disease such as …

Authors mentioned that when lung sliding and comet tail artifacts (on B-mode) and seashore sign (on motion mode) were not seen on lung ultrasound (US), pneumothorax (PTX) was provisionally diagnosed. However, there are reasons, other than PTX, for the abolishment of lung sliding in mechanically ventilated patients.

Pneumothorax (PTX), is an accumulation of free air within the virtual space between visceral and parietal pleura (1). Spontaneous PTX develops in seemingly healthy lung, while secondary PTX needs a lung affected by some underlying chronic pathology, such as bullous emphysema.

Results: Twenty-five traumatic PTXs were detected in the 218 hemithoraxes (109 patients; 2 patients had a bilateral PTX) evaluated by spiral CT scan; of these, only 13 of 25 PTXs (52%) were revealed by chest Rx (sensitivity, 52%; specificity, 100%), while 23 of 25 PTXs (92%) were identified by lung US with one false-positive result (sensitivity ...

Lung Sliding: Movement of the Two Pleural Layers During Respiration. Indicates that the Two Layers are in Apposition; Represents a Normal Finding; Absent Lung Sliding Can Be Due to Pneumothorax or Pleural Effusion; Lung Sliding on M-Mode:

2014年9月17日 · Different causes of post-thoracentesis pneumothorax. There are three causes of pneumothorax after thoracentesis. The first and most obvious cause is lung laceration by the needle or plastic catheter. This may occur if the operator inserts the needle into the lung.

2012年10月11日 · Our study demonstrates that there is a linear relationship between PTX volume and the lateral position of the lung point during mechanical ventilation, and that ultrasound imaging is as accurate as CT imaging for localizing lung points.