1/6. Pneumomediastinum associated with inhalation of white smoke.Hexachloroethane (HC) smoke, also known as white smoke, is an obscurant used in numerous military situations. Many adverse health effects are associated with the use of white smoke, some of which are potentially life threatening. inhalation is the most frequent route of injury. Two deaths among U.S. Army personnel resulted from HC smoke exposure in 1988. As recently as 1997, a united nations soldier in Bosnia died after an HC smoke canister was discharged in his tent. Injuries are predominantly pulmonary and range from cough and dyspnea to chemical pneumonitis, pulmonary edema, and adult respiratory distress syndrome. In the case presented, a soldier developed pneumomediastinum after exposure to HC smoke. This is the first case reported in the literature of pneumomediastinum associated with HC smoke inhalation.- - - - - - - - - - ranking = 1keywords = life (Clic here for more details about this article) |
2/6. Extracorporeal support in an adult with severe carbon monoxide poisoning and shock following smoke inhalation: a case report.The objective of this study was to discuss the case of a patient with severe smoke inhalation-related respiratory failure treated with extracorporeal support. The study was set in a 12-bed multi-trauma intensive care unit at a level one trauma center and hyperbaric medicine center. The patient under investigation had carbon monoxide poisoning, and developed acute respiratory distress syndrome and cardiovascular collapse following smoke inhalation. Rapid initiation of extracorporeal support, extreme inverse-ratio ventilation and intermittent prone positioning therapy were carried out. Admission and serial carboxyhemoglobin levels, blood gases, and computerized tomography of the chest were obtained. The patient developed severe hypoxia and progressed to cardiovascular collapse resistant to resuscitation and vasoactive infusions. Veno-venous extracorporeal support was initiated. Cardiovascular parameters of blood pressure, cardiac output, and oxygen delivery were maximized; oxygenation and ventilation were supported via the extracorporeal circuit. Airway pressure release ventilation and intermittent prone positioning therapy were instituted. Following 7 days of extracorporeal support, the patient was decannulated and subsequently discharged to a transitional care facility,neurologically intact. smoke inhalation and carbon monoxide poisoning may lead to life-threatening hypoxemia associated with resultant cardiovascular instability. When oxygenation and ventilation cannot be achieved via maximal ventilatory management, extracorporeal support may prevent death if initiated rapidly.- - - - - - - - - - ranking = 1keywords = life (Clic here for more details about this article) |
3/6. Pulmonary vascular lesions in the adult respiratory distress syndrome caused by inhalation of zinc chloride smoke: a morphometric study.Two soldiers were fatally injured by accidental inhalation of zinc chloride (ZnCl2) from a smoke bomb. Although exposed to a relatively short but high smoke concentration, acute injury was minor and for 10 days the patients were clinically satisfactory. Unexpectedly, both then rapidly developed features typical of severe adult respiratory distress syndrome with pulmonary hypertension. intubation and mechanical ventilation were instigated on day 15 (patient no. 1) and day 12 (patient no. 2) after the inhalation, but death followed at days 25 and 32, respectively. lung vascular injury was assessed by angiography and morphometric techniques. The lungs showed extensive interstitial and intra-alveolar space fibrosis. Vessels showed a significant lumen reduction by contracture (that is, reduction in vessel external diameter) affecting preacinar and intraacinar arterial and venous segments, the extent of injury suggesting that hexite causes more severe venous injury than seen in other types of adult respiratory distress syndrome. In microvessels there was obliteration and widespread occlusion by endothelial cell proliferation and clot. No evidence of infection was identified during life or at autopsy. It is unclear whether the long lag time was due to the fact that the infection was not a complicating event or because steroids, administered prophylactically, had sufficed to delay, but not to prevent, the amplification of injury that seems responsible for the adult respiratory distress syndrome.- - - - - - - - - - ranking = 2keywords = life (Clic here for more details about this article) |
4/6. Emergency percutaneous tracheostomy in a severely burned patient with upper airway obstruction and circulatory arrest.We report the life-saving use of Griggs percutaneous tracheostomy in an arrested patient with complex upper airway obstruction, as a result of burns, smoke injuries and iterative tracheal intubation attempts. The technique was performed blindly at bedside to treat an acute episode of failed ventilation and intubation and cardiac arrest in a patient with altered neck anatomy. The intervention salvaged the situation, leaving a definitive airway. The feasibility of using an emergency Griggs percutaneous tracheostomy versus cricothyroidotomy is suggested in selected cases.- - - - - - - - - - ranking = 1keywords = life (Clic here for more details about this article) |
5/6. Cyanide and methemoglobin kinetics in smoke inhalation victims treated with the cyanide antidote kit.STUDY OBJECTIVE: To evaluate serial cyanide, methemoglobin, and carbon monoxide levels in smoke inhalation patients. SETTING: Regional poison center and regional toxicology treatment center. PARTICIPANTS: Seven critically ill smoke inhalation patients referred to the regional poison center. INTERVENTIONS: Peak level and half-life were determined by obtaining serial carboxyhemoglobin, cyanide, and methemoglobin levels. RESULTS: The mean observed half-life of cyanide was 3.0 /- 0.6 hours. methemoglobinemia was evaluated in four patients after sodium nitrite administration. The peak measured methemoglobin levels (mean, 10.5% /- 2%; range, 7.9% to 13.4%) did not occur until a mean of 50 minutes (range, 35 to 70 minutes) following administration of sodium nitrite. The total oxygen-carrying capacity reduced by the combination of carboxyhemoglobin and methemoglobin was never more than 21% (range, 10% to 21%) in this series. CONCLUSION: The administration of sodium nitrite to smoke inhalation patients in the presence of concomitant carbon monoxide poisoning may be relatively safe.- - - - - - - - - - ranking = 2keywords = life (Clic here for more details about this article) |
6/6. A case of life-threatening lactic acidosis after smoke inhalation - interference between beta-adrenergic agents and ethanol?A 49-year-old male developed bronchospasm and severe lactic acidosis after exposition to fire smoke. The correction of lactic acidosis following beta-adrenergic agents withdrawal, and the transitory increase in lactate after salbutamol reintroduction are consistent with hypersensitivity to salbutamol. However, the plasma lactate concentration (32.6 mmol/l) that we observed 9.5 h after admission is far above those currently seen after administration of beta-adrenergic agents. We searched for causes able to potentiate the adverse effects of these drugs and we noticed that our patient had a high plasma ethanol level (2.4 g/l). Alcohol metabolism in the liver results in generation of high NADH/nad ratios, thus reducing lactate liver clearance. This observation suggests that plasma lactate levels should be monitored closely in alcoholic patients treated with beta-mimetic agents.- - - - - - - - - - ranking = 4keywords = life (Clic here for more details about this article) |