Observing pneumothoraces: The 35-millimeter rule is safe for both blunt and penetrating chest trauma.

BACKGROUND: As more pneumothoraxes (PTX) are being identified on chest computed tomography (CT), the empiric trigger for tube thoracostomy (TT) versus observation remains unclear. We hypothesized that PTX measuring 35 mm or less on chest CT can be safely observed in both penetrating and blunt trauma mechanisms. METHODS: A retrospective review was conducted of all patients diagnosed with PTX by chest CT between January 2011 and December 2016. Patients were excluded if they had an associated hemothorax, an immediate TT (TT placed before the initial chest CT), or if they were on mechanical ventilation. Size of PTX was quantified by measuring the radial distance between the parietal and visceral pleura/mediastinum in a line perpendicular to the chest wall on axial imaging of the largest air pocket. Based on previous work, a cutoff of 35 mm on the initial CT was used to dichotomize the groups. Failure of observation was defined as the need for a delayed TT during the first week. A univariate analysis was performed to identify predictors of failure in both groups, and multivariate analysis was constructed to assess the independent impact of PTX measurement on the failure of observation while controlling for demographics and chest injuries. RESULTS: Of the 1,767 chest trauma patients screened, 832 (47%) had PTX, and of those meeting inclusion criteria, 257 (89.0%) were successfully observed until discharge. Of those successfully observed, 247 (96%) patients had a measurement of 35 mm or less. The positive predictive value for 35 mm as a cutoff was 90.8% to predict successful observation. In the univariant analyses, rib fractures (p = 0.048), Glasgow Coma Scale (p = 0.012), and size of the PTX (≤35 mm or >35 mm) (P < 0.0001) were associated with failed observation. In multivariate analysis, PTX measuring 35 mm or less was an independent predictor of successful observation (odds ratio, 0.142; 95% confidence interval, 0.047-0.428)] for the combined blunt and penetrating trauma patients. CONCLUSION: A 35-mm cutoff is safe as a general guide with only 9% of stable patients failing initial observation regardless of mechanism. LEVEL OF EVIDENCE: Therapeutic, level III.

Analysis of Academic Medical Center Graduate Medical Education Websites for Policies Regarding Restrictive Covenants in Non-ACGME Fellowships.

BACKGROUND: The topic of restrictive covenants in fellowships that are not approved by the Accreditation Council for Graduate Medical Education (ACGME) has not been studied. OBJECTIVE: To investigate the presence of institutional polices at academic medical centers regarding restrictive covenants in non-ACGME fellowships. METHODS: The graduate medical education (GME) office website of 132 academic medical centers was evaluated and searched for the following as of June 1, 2017: presence of any ACGME residency or fellowship, presence of any non-ACGME fellowship, presence of GME policies and procedures, presence of a restrictive covenant policy, and if that policy applies to non-ACGME fellowships. RESULTS: A total of 96 academic medical centers had non-ACGME fellowships. Of these, 56 prohibit restrictive covenants in non-ACGME fellowships because of either their GME policy or state law. Seven academic medical centers have a GME policy that allows restrictive covenants in non-ACGME fellowships. Two academic medical centers clearly state that fellows in a certain subspecialty fellowship will be required to sign a restrictive covenant. CONCLUSIONS: GME policies at academic medical centers that allow restrictive covenants in non-ACGME fellowships are very uncommon. The practice of having fellows sign a restrictive covenant in a non-ACGME fellowship is in conflict with an American Medical Association ethics statement, ACGME institutional requirement IV.L, and the rules of the San Francisco Match.

Clinical significance of computed tomography contrast extravasation in blunt trauma patients with a pelvic fracture.

INTRODUCTION: Blunt pelvic fractures can be associated with major pelvic bleeding. The significance of contrast extravasation (CE) on computed tomography (CT) is debated. We sought to update our experience with CE on CT scan for the years 2009-2014 to determine the accuracy of CE in predicting the need for angioembolization. METHODS: This is a retrospective review of the trauma registry and our electronic medical record from a Level I trauma center. Patients seen from July 1, 2009, to September 7, 2014, with blunt pelvic fractures and contrast-enhanced CT were included. Standard demographic, clinical, and injury data were obtained. Patient records were queried for CE, performance of angiography, and angioembolization. Positive patients were those where CE was associated with active bleeding requiring angioembolization. All other patients were considered negative. RESULTS: There were 497 patients during the study time period with blunt pelvic fracture meeting inclusion criteria, and 75 patients (15%) had CE. Of those patients with CE, 30 patients (40%) underwent angiography, and 17 patients (23%) required angioembolization. The sensitivity, specificity, positive predictive value, and negative predictive value of CE on CT were 100%, 87.9%, 22.7%, and 100%, respectively. Two patients without CE underwent angiography but did not undergo embolization. Patients with CE had higher mortality (13 vs. 6%, p < 0.05) despite not having higher ISS scores. CONCLUSIONS: This study reinforces that CE on CT pelvis with blunt trauma is common, but many patients will not require angioembolization. The negative predictive value of 100% should be reassuring to trauma surgeons such that if a modern CT scanner is used, and there is no CE seen on CT, then the pelvis will not be a source of hemorrhagic shock. All of these findings are likely due to both increased comfort with observing CEs and the increased sensitivity of modern CT scanners. LEVEL OF EVIDENCE: Therapeutic/care management study, level IV.

Removing the critically ill patient from mechanical ventilation.

Weaning from mechanical ventilation is usually straightforward but is occasionally challenging. Sedation must be used at the appropriate times and with appropriate dosing. A protocol that calls for a daily sedation holiday with a spontaneous breathing trial decreases time on the ventilator. Early tracheostomy is beneficial in traumatic brain injury patients. Noninvasive ventilation is most useful in patients with baseline obstructive sleep apnea and chronic obstructive pulmonary disease.