• Title/Summary/Keyword: CWT(chest wall thickness)

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Needle Decompression for Trauma Patients: Chest Wall Thickness and Size of the Needle (외상 환자에 대한 바늘감압술에서 흉벽 두께와 바늘 길이의 관계)

  • Kim, Jee-Wan;Jeong, Jin-Woo;Cho, Suck-Ju;Yeom, Seok-Ran;Han, Sang-Kyoon;Park, Sung-Wook
    • Journal of Trauma and Injury
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    • v.23 no.2
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    • pp.63-67
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    • 2010
  • Purpose: A tension pneumothorax is a fatal condition that requires immediate intervention. Although a definitive treatment for a tension pneumothorax is a tube thoracostomy, needle decompression can provide temporary relief, that is lifesaving. The traditional procedure for needle decompression involves inserting a needle or catheter at the second intercostal space, the midclavicular line. Recent evidence suggests that the commonly used catheters do not have sufficiently penetrate the chest wall. There are also claims that a lateral approach to needle decompression is easier and safer than the traditional anterior approach. The purpose of this study is to evaluate the optimal approach for needle decompression for the Korean population by measuring chest wall thicknesses at the points used for both the anterior and the lateral approaches. Methods: The chest wall thickness (CWT) of trauma victims who visited the Emergency Center of Pusan National University Hospital was measured by computed tomography (CT) images. The CWT was measured at the points used for the anterior and the lateral methods and was compared with the length of commonly used catheters, which is 45 mm. Results: The mean CWT at the second intercostal space, the midclavicular line, was shorter than the CWT at the 5th intercostal space, the anterior axillary line. However, the percentage of patients whose CWT was greater than 45 mm was larger when measured anteriorly (8.2%) that when measure laterally (5.7%). Female patients and those older than 60 were more likely to have an anterior CWT greater than 45 mm (28.2% for females and 15.5% for those older than 60). Conclusion: The percentage of trauma victims in Korea whose CWT is greater than 45 mm is lower than the values previously reported by other countries. However, females and older patients tend to have thicker chest walls, so the lateral approach would be suggested when performing needle decompression for such patients with suspected tension pneumothoraces.

Study of the Length of Needle Thoracostomy Catheter Needed for Patients with Chest Trauma (흉부 외상 환자에서 늑막 천자를 위해 바늘 도관의 길이에 대한 연구)

  • Kang, Sung Won;Ryoo, Hyun Wook;Park, Jung Bae;Seo, Kang Suk;Chung, Jae Myung
    • Journal of Trauma and Injury
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    • v.22 no.1
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    • pp.1-4
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    • 2009
  • Purpose: This study was conducted to evaluate the length of the catheter used in a needle thoracostomy for emergency decompression of a tension pneumothorax by measuring the chest wall thickness (CWT) in patients with chest trauma Methods: A retrospective review of 201 patients with chest trauma who had been transported the emergency department in a tertiary university hospital in a metropolitan area between 1 January and 31 February 2007 was performed. The average CWT at the second intercostal space (ICS) in the midclavicular line (MCL) was measured by using a chest computed tomography scan. Results: As the left and the right mean CWTs were $3.4{\pm}1.0cm$ and $3.4{\pm}1.0cm$, respectively, there was no significant statistical difference between them. The mean CWT of female patients was significantly higher than that of male patients (p=0.001). The mean CWT of patients under the age of 65 years was significantly thicker than that of the patients over the age of 65 years (p<0.001). Of the studied patients, 12 (6.0%) a CWT > 5 cm. Conclusion: A 5 cm-length catheter in a needle thoracostomy may be insufficient for emergency decompression of a tension pneumothorax, so a catheter longer than 5 cm in length is needed.