Mesenteric ischemia: an unusual presentation of traumatic intrahepatic arterioportal fistula.

Traumatic hepatic arterioportal fistulae (APF) are described infrequently as sequelae of hepatic trauma. These anomalies are usually associated with blunt hepatic trauma or iatrogenic injury. The majority of APF present within weeks to months of injury with gastrointestinal hemorrhage, hemobilia, abdominal pain, and diarrhea. When presenting remotely APFs are associated with portal hypertension, heart failure, gastrointestinal hemorrhage, ascites, and splenomegaly. We report an unusual case of mesenteric ischemia due to an APF that resulted from a penetrating liver injury 20 years before presentation. Successful treatment of the APF was achieved by intravascular catheter occlusion resulting in resolution of symptoms.

Origin of the left pulmonary artery from the aorta: embryologic considerations.

We observed a case of anomalous origin of the left pulmonary artery from the aorta in which the media of the abnormal vessel and the main pulmonary artery were fused, but without communication. This is the fifth isolated case of repair without the use of cardiopulmonary bypass reported in the literature. This pathology should be included in the aortic arch anomalies as a partial or complete failure of development of the left sixth arch.

Should aminoglycoside antibiotics be abandoned?

BACKGROUND: Aminoglycosides can cause nephrotoxicity and ototoxicity. Alternatives are available. METHODS: Surgical service antibiotic use, aminoglycoside toxicity, and perioperative culture/sensitivity results from July 1998 to June 1999 were reviewed. RESULTS: Of 289 positive cultures in 243 patients, 92 cultures (32%) grew 151 Gram-negative rods (GNRs). Aminoglycosides were used in 26 patients and 4 of 26 (15%) suffered nephrotoxicity. Of the 112 GNRs tested against ceftazidime, 111 (99%) were sensitive to it which was significantly better than amikacin (56 of 61, 92%, P = 0.038), gentamicin (116 of 134, 87%, P <0.001), and tobramycin (67 of 81, 83%, P <0.001). The proportion sensitive to cefuroxime (26 of 30, 87%) was equivalent to the proportions sensitive to gentamicin (87%, P = NS) and tobramycin (83%, P = NS). Of the 35 GNRs that were resistant to gentamicin and/or tobramycin, 15 (43%) were Pseudomonas aeruginosa. CONCLUSION: Aminoglycosides produce a significant rate of nephrotoxicity. There are antibiotics with equal or better sensitivity profiles than aminoglycosides against GNRs and Pseudomonas. Aminoglycoside use is rarely, if ever, indicated.

Selective use of chest tubes in thoracotomies for congenital cardiovascular procedures.

BACKGROUND: Advantages and complications have been reported from the use of chest tubes (CT). To reduce the incidence of complications we have employed a selective use of CT in thoracotomy for congenital cardiovascular procedure; ie, in absence of air leaks and fluid to be drained, no CT was inserted. METHODS: The lung was reexpanded and air evacuated during the chest closure. Early and 6 hours chest roentgenograms were performed on every patient. This study retrospectively reviews the results of this selective approach in 546 patients operated on between 1980 and 1998 mainly for patent ductus arteriosum ligation, pulmonary artery band, aortic coarctation, Blalock-Taussig shunt. Four hundred and eighteen patients did not receive a CT at the initial surgery (group I), and 128 patients received a CT either before or at surgery (group II). RESULTS: 40 patients in group I developed an air or fluid collection large enough to require a CT. Only one patient had complication, from an undetected hemothorax. Nine patients in group II required another CT, and one patient developed a pneumothorax upon pulling out the CT. No death in either group was related to the use or lack of use of the CT. A total of 378 CTs and collecting chambers were saved. CONCLUSIONS: A selective approach to the use of CT in thoracotomies for cardiovascular procedures can be employed with minimal complications, more comfort for the patient, and cost savings.