Michael Twardowski 27 Nov 2013 NonInvasive Pneumothorax Detection

Michael Twardowski 27 Nov 2013 Non-Invasive Pneumothorax Detection

Pneumothorax Air is trapped between the parietal and visceral pleura Traumatic Common after trauma or blunt force injury to the thoracic cavity Spontaneous Hemapneumothorax Tension pneumothorax Lung collapses

Conventional Detection Methods Clinical Exam Chest X-ray (CXR) Sensitivity 28. 6% CAT Scan

Chest X-ray

The Need Pneumothorax accounts for 10% of preventable deaths in a combat environment. Remote areas Lack of access to conventional diagnostic methods. Air transport Evaluation of a patients’ respiratory condition can be difficult in loud environments. Conventional CXR misses 16 -76% of all pneumothoraxes.

Pneumoscan™ Developed by Pneumo. Sonics. Uses Micropower Impulse Radar. Operates in a bandwidth from 1 to 4 GHz. Emits ultra short radar pulses (<1 ns) at 2 MHz. Spatial accuracy of 5 mm. Power output similar to cell phones (50 m. W) Currently classified as a Class III Medical products. Awaiting premarket approval.

Pneumoscan™

Pneumoscan™

Results Sensitivity of 85. 7%. Specificity of 97. 7%. Can measure volumes within 30 m. L. below clinical significance Can confirm successful needle decompression in a nonclinical setting. Minimal training required.

References Electro. Sonics Medical. Pneumothorax Detector Whitepaper. http: //www. elecsonmed. com/PDFs/Pneumo_White_Pper_June_2007. do c. Greszler A. Non-Invasive Pneumothorax Detector. http: //www. dtic. mil/dtic/tr/fulltext/u 2/a 530727. pdf. Albers C, Haefeli P, Zimmermann H, de Moya M, Exadaktylos A. Can handheld micropower impulse radar technology be used to detect pneumothorax? Initial experience in a European trauma centre. http: //www. sciencedirect. com/science/article/pii/S 002013831200048