Intrarectal ultrasonography in the staging and management of rectal tumors.

Intrarectal ultrasonography (IRUS) was used in the preoperative staging of 17 patients with rectal neoplasms. Fourteen patients had biopsy proven adenocarcinoma, and three others had large villous adenomas. Comparisons were made between clinical examination, IRUS staging and subsequent histopathologic staging.

A comparison between intrarectal ultrasound and CT scanning in staging of experimental rectal tumors.

The purpose of this study was to compare the accuracy of preoperative staging of experimental rectal tumors by digital rectal exam, intrarectal ultrasound (IRUS), and CT scanning with pathologic exam. Rectal tumor masses were induced in 10 mongrel dogs by submucosal injection of 2-3 cc of Freund's complete adjuvant. One week later, the animals underwent digital rectal exam, IRUS, and pelvic CT scans.

Pulmonary artery catheterization: a prospective study of internal jugular and subclavian approaches.

We compared complications of pulmonary artery catheter (PAC) insertion and maintenance at internal jugular (IJ) vs. subclavian (SC) sites. Patients were randomized into groups using an IJ or SC route, and insertions were timed.

Pericardial laceration and fatal cardiac herniation in an improperly restrained six-month-old infant.

We present the youngest reported patient to suffer pleuropericardial laceration with fatal cardiac herniation from blunt chest trauma, apparently related to the improper use of an infant restraint device. Pericardial laceration with cardiac herniation occurs infrequently, but should be suspected in this setting when a patient in electromechanical dissociation is unresponsive to standard resuscitation measures.

Comparison of the effect of asphyxia, hypoxia, and acidosis on intestinal blood flow and O2 uptake in newborn piglets.

The aim of our study was to compare the effects of asphyxia and the two components of asphyxia, i.e. hypoxia and acidosis, on intestinal blood flow and oxygen consumption in anesthetized newborn piglets less than 3 days old.