Active clinical trials for "Pneumothorax"

The objective of this study is to investigate whether the use of strain ultrasound can improve the lung ultrasound accuracy for the diagnosis of pneumothorax, particularly for inexperienced physicians.

A retrospective study to demonstrate the optimal depth of right side bronchial blocker for complete right lung separation. Data were collected from all patients who completed right side VATS with right side BB from Jan 2010 through Nov 2010.

Esophageal Pressure During one lung ventilation

Pneumothorax is a common life-threatening complication, frequently seen in patients who have been admitted to the emergency department and intensive care unit. This study aimed to describe the features of patients with pneumothorax due to blunt or penetrating trauma. A total of 615 patients admitted to the emergency department between January 2008 and December 2010 due to multi-trauma, and underwent both chest x-ray and computed chest tomography were included in the study. There were 157 patients with a diagnosis of pneumothorax. Fifty-five of them were excluded because of the eligible criteria. The final study population included 105 patients. The computed chest tomography reading was considered as the gold standard for the occult pneumothorax diagnosis. Data on patient characteristics, trauma types, accompanied traumas, etiology of the chest trauma, and chest x-ray, and computed chest tomography results were recorded.

The goal of this retrospective study is to describe the outcomes of spontaneous idiopathic pneumothorax treated by thoracoscopy with pleural abrasion and blebectomy. The main questions it aims to answer are: are there risk factors leading to pneumothorax recurrence? are pleural abrasion and blebectomy really diminishing the recurrence of pneumothorax?

Background Assessment of the percentage of lung collapse is crucial in the therapeutic decision-making of pneumothorax. The methods normally used to this purpose are radiological. Computerized tomography scan (CT) is highly accurate because it allows the exact evaluation of the volume of the air layer. However, in clinical practice assessment of the volume of pneumothorax mainly relies on the measurement of the inter-pleural distance at conventional chest radiography (CXR). This latter method is inaccurate. Lung ultrasound is a new method highly accurate in the first diagnosis of pneumothorax, with a sensitivity superior to CXR and similar to CT in case of traumatic pneumothorax. The scientific community is actually debating about the usefulness of lung ultrasound in the quantification of pneumothorax []. Lung ultrasound can assess the superficial extension of the pneumothorax, but cannot evaluate its volume. Aim Main purpose of the study is to compare measurement of the superficial extension of pneumothorax on the chest wall obtained by lung ultrasound, to the evaluation of the air volume performed by CT in patients with pneumothorax. The main hypothesis of the study is that the cut-off between small (<11% of lung collapse) and large (>11% of lung collapse) pneumothorax can be identified by a lung ultrasound evaluation of the superficial extension of pneumothorax. Second purpose of the study is to compare the accuracies of lung ultrasound and CXR in predicting the volume of pneumothorax assessed by CT. Secondary hypothesis is that lung ultrasound demonstrates greater accuracy in the prediction of volume of pneumothorax and percentage of lung collapse. Methods Patients with a diagnosis of pneumothorax confirmed at CT are prospectively enrolled and submitted to lung ultrasound within 20 min from the CT study. Different locations of the sonographic "lung point" on the chest wall (i.e. the point on the chest wall where the sonographic pattern of the normally aerated lung alternates with the pathologic sonographic pattern of pneumothorax) are compared with different volumes of pneumothorax measured by CT.

Primary spontaneous pneumothorax most commonly occurs in young, tall, lean males. The estimated recurrence rate is 23-50% after the first episode and increases to 60% after the second pneumothorax. The pathogenesis of this benign disease remains unclear. Generally, rupture of the emphysematous change or blebs in the apex of the lung is considered as the cause of pneumothorax. The main purpose of this study is to investigate the molecular pathogenesis of blebs formation or emphysematous change of the lung in these young, healthy patients.

Bedside ultrasonography for detection of pneumothorax after transbronchial lung biopsies in lung transplant patients

Endobronchial ultrasound (EBUS) is a technique that uses ultrasound along with bronchoscope to visualize airway wall and structures adjacent to it. Pneumothorax is a known complication from EBUS procedure. To rule out a Pneumothorax after the procedure, a Chest -X-ray is usually done. Point-of-care sonography has emerged as an invaluable tool in the assessment of patients with both traumatic and non-traumatic dyspnea. Multiple studies involving bedside ultrasound has shown that a pneumothorax can easily be ruled out if pleural sliding sign or B lines are visualized on lung ultrasonography; the accuracy of lung ultrasound in ruling out pneumothorax approach computed tomography and exceed plain radiography. Preforming a lung ultrasound using the EBUS bronchoscope tip as a way to rule out pneumothorax has never been described previously. If this is possible it will obviate the need of getting a Chest -X-ray and decrease the dose of radiation that the patient is exposed to. In this study we will demonstrate that the feasibility of using the transducer of the EBUS Bronchoscope to perform bedside lung ultrasound to rule out pneumothorax.

Changes in heart rate variability in anesthetized, ventilated patients undergoing tension pneumothorax for thoracoscopic cervical sympathectomy