Biomedical subjects
Publications and source records attributed to S Izenberg.
Multiple missile emboli are rare. The most likely setting for their occurrence is multiple penetrating injuries from birdshot. Such is this case of this 26-year-old man with birdshot injuries to the torso penetrating the portal vein and embolizing to the liver, producing infarcts and death.
Delayed cardiac tamponade is a rare phenomenon with two primary causes: delayed hemorrhage after an acute injury or delayed pericarditis with effusion. We present a case of cardiac tamponade 4 weeks after injury, with findings compatible with delayed hemorrhage and pericarditis. Our case emphasizes the need for follow-up of patients with penetrating chest trauma for several months after injury; echocardiography should be used if symptoms of tamponade appear.
Explore the source record for details and available documents.
A modified crossover surface coil with minimal B1 field penetration was used for collection of skin phosphorus NMR spectra. Projection imaging experiments show that the coil-sensitive volume is uniform at the phosphorus frequency, but strikingly nonuniform at the proton frequency. Experiments with an in vitro phosphorus phantom, designed to simulate skin and underlying tissue, demonstrated that 45.1% (+/- 1.2%) of total signal was derived from Sprague-Dawley rat skin and 19.3% (+/- 1.4%) of total signal was derived from Fischer-344 rat skin. 31P MR spectra of rat skin in vivo permitted resolution of four phosphorus compounds: nucleoside triphosphates, phosphocreatine (PCr), inorganic phosphate (Pi), and phosphomonoester. Spectra collected after skin flap surgery in Fischer-344 rats showed a 50.1% (+/- 7.6%) reduction in the ratio of PCr/Pi within 30 min of surgery, compared to presurgical PCr/Pi levels (P less than 0.01). Skin phosphorus spectra are potentially useful for assessment of skin flap and skin graft viability.
Stridor is a common problem in patients with burns after extubation, especially in children and in those with facial burns or airway injuries. The usual treatments for severe respiratory distress, such as reintubation and tracheotomy, carry substantial risks for patients. We report our successful treatment of severe postextubation stridor in a 7-year-old patient with burns with the administration of heliox in addition to more traditional therapies, review the literature about the use of heliox in postextubation stridor, and suggest cases in which its use may prevent the need for more hazardous interventions.