Anteroposterior chest radiograph vs. chest CT scan in early detection of pneumothorax in trauma patients.

Pneumothorax is a common complication following blunt chest wall trauma. In these patients, because of the restrictions regarding immobilization of the cervical spine, Anteroposterior (AP) chest radiograph is usually the most feasible initial study which is not as sensitive as the erect chest X-ray or CT chest for detection of a pneumothorax. We will present 3 case reports which serve for better understanding of the entity of occult pneumothorax. The first case is an example of a true occult pneumothorax where an initial AP chest X-ray revealed no evidence of pneumothorax and a CT chest immediately performed revealed evidence of pneumothorax. The second case represents an example of a missed rather than a truly occult pneumothorax where the initial chest radiograph revealed clues suggesting the presence of pneumothorax which were missed by the reading radiologist. The third case emphasizes the fact that "occult pneumothorax is predictable". The presence of subcutaneous emphesema and pulmonary contusion should call for further imaging with CT chest to rule out pneumothorax. Thoracic CT scan is therefore the "gold standard" for early detection of a pneumothorax in trauma patients. This report aims to sensitize readers to the entity of occult pneumothorax and create awareness among intensivists and ER physicians regarding the proper diagnosis and management.

Guidelines for prehospital fluid resuscitation in the injured patient.

Although the need and benefit of prehospital interventions has been controversial for quite some time, an increasing amount of evidence has stirred both sides into more frequent debate. Proponents of the traditional "scoop-and-run" technique argue that this approach allows a more timely transfer to definitive care facilities and limits unnecessary (and potentially harmful) procedures. However, advocates of the "stay-and-play" method point to improvement in survival to reach the hospital and better neurologic outcomes after brain injury. Given the lack of consensus, the Eastern Association for the Surgery of Trauma convened a Practice Management Guideline committee to answer the following questions regarding prehospital resuscitation: (1) should injured patients have vascular access attempted in the prehospital setting? (2) if so, what location is preferred for access? (3) if access is achieved, should intravenous fluids be administered? (4) if fluids are to be administered, which solution is preferred? and (5) if fluids are to be administered, what volume and rate should be infused?

Traumatic brain injury in intoxicated patients.

BACKGROUND: We sought to evaluate the effect alcohol intoxication may have had in nonsurgically treated patients with severe traumatic brain injury. METHODS: The Montreal General Hospital Traumatic Brain Injury Registry was used to identify all adult patients with a Glasgow Coma Scale score < or =8 at admission, within a 15-month period. All charts were retrospectively reviewed. RESULTS: Twenty-three patients had toxic blood alcohol levels (BAL > or =21.7 mmol/L), 24 were alcohol negative (BAL <3 mmol/L), and 10 were alcohol-influenced or had unknown BAL. Patients were more likely to have intracranial pressure monitoring if they had multiple intracranial hemorrhages, sustained multiple injuries, or had a post-resuscitative Glasgow Coma Scale score < or =8. Intoxicated patients had a mean delay of 151 minutes more in the insertion time of an intracranial pressure monitoring device, compared with alcohol-negative patients. CONCLUSIONS: Alcohol was a confounding factor in the treatment of some of our patients.

Spill your guts! Perceptions of Trauma Association of Canada member surgeons regarding the open abdomen and the abdominal compartment syndrome.

BACKGROUND: To survey surgeon opinion regarding the management of the open abdomen (OA) and abdominal compartment syndrome (ACS) to assess current practice and direct future prospective clinical studies. METHODS: Opinions of self-designated trauma, general, pediatric, and vascular surgeons belonging to the Trauma Association of Canada (TAC), were surveyed through a mixed-mode (mail and Web based) questionnaire. RESULTS: Among 102 eligible candidates, 86 (84%) responded; 83% did regular trauma call, 45% regular critical care call being a separate call 79% of the time; 79% worked in centers serving >500,000 people; the median year of practice entry was 1997. There was no standard definition of what constituted an "open abdomen", preferred time for re-operation, or preferred method for alternate fascial closure, although 90% reported having not closing the fascia after a trauma laparotomy. Being "physically unable" was reported as an indication twice as often as objective measures of airway or bladder pressures. The decision to proceed with OA was reported as rarely or never being made preoperatively by 78% of respondents. None reported an institutional policy regarding OA. Eighty-four percent reported (re)opening an abdomen for primary ACS, 46% for secondary ACS, 28% for tertiary ACS. Self-assessed familiarity for the ACS was 6/7 on a Likert scale. Physical examination was reported as a diagnostic criterion for ACS by 66%, and used to screen by 21% of respondents. CONCLUSIONS: There is no consensus regarding definition, functional indications, or management of an open abdomen in the perceptions of Canadian trauma providers despite a high self reported level of familiarity with the abdominal compartment syndrome. This is an area of practice with potential and requirements for further multi-center study.