Extended focused assessment with sonography for trauma (EFAST) in the diagnosis of pneumothorax: experience at a community based level I trauma center.
BACKGROUND
Early identification of pneumothorax is crucial to reduce the mortality in critically injured patients. The objective of our study is to investigate the utility of surgeon performed extended focused assessment with sonography for trauma (EFAST) in the diagnosis of pneumothorax.


METHODS
We prospectively analysed 204 trauma patients in our level I trauma center over a period of 12 (06/2007-05/2008) months in whom EFAST was performed. The patients' demographics, type of injury, clinical examination findings (decreased air entry), CXR, EFAST and CT scan findings were entered into the data base. Sensitivity, specificity, positive (PPV) and negative predictive values (NPV) were calculated.


RESULTS
Of 204 patients (mean age--43.01+/-19.5 years, sex--male 152, female 52) 21 (10.3%) patients had pneumothorax. Of 21 patients who had pneumothorax 12 were due to blunt trauma and 9 were due to penetrating trauma. The diagnosis of pneumothorax in 204 patients demonstrated the following: clinical examination was positive in 17 patients (true positive in 13/21, 62%; 4 were false positive and 8 were false negative), CXR was positive in 16 (true positive in 15/19, 79%; 1 false positive, 4 missed and 2 CXR not performed before chest tube) patients and EFAST was positive in 21 patients (20 were true positive [95.2%], 1 false positive and 1 false negative). In diagnosing pneumothorax EFAST has significantly higher sensitivity compared to the CXR (P=0.02).


CONCLUSIONS
Surgeon performed trauma room extended FAST is simple and has higher sensitivity compared to the chest X-ray and clinical examination in detecting pneumothorax.
Nandipati
Kalyana C
KC
Department of Surgery, Mary Immaculate Hospital, New York Medical College, Queens, NY 11355, United States. kalyana.nandipati@gmail.com
Allamaneni
Shyam
S
Kakarla
Ravindra
R
Wong
Alfredo
A
Richards
Neil
N
Satterfield
James
J
Turner
James W
JW
Sung
Kae-Jae
KJ
D000328:Adult; D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D011030:Pneumothorax / Q000000981:diagnostic imaging* / Q000601:surgery; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D013898:Thoracic Injuries / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014193:Trauma Centers; D014463:Ultrasonography