The relationship between conductance and functional residual capacity during drug-induced bronchoconstriction.

Unlabelled: We wondered if the inverse changes in airway conductance (Gaw) and functional residual capacity (FRC) during histamine (H) and acetylcholine (ACH) challenge are interrelated or occur at random. In 14 normal and 14 asthmatic subjects, we determined FRC and Gaw changes corresponding to changes in specific airway conductance (SGaw) around -40 percent produced by an aerosol of H or ACH inhaled quantitatively and with measured lung deposition. We also assessed the elastic recoil following H inhalation (5A).

Anatomic characteristics of the pancreatic arteries. Radiologic observations and their clinical significance.

Major complications of operations that remove or transplant a portion of the pancreas appear related to the arterial blood supply. Hemorrhage is a result of inadequate control of the appropriate principal arteries, and ischemia and its consequences occur when the arterial blood supply to portions of preserved pancreas has been inadvertently interrupted. This radiographic study of the principal arteries of the pancreas demonstrates that these vessels may be visualized and their origin determined in the vast majority of cases.

Intraluminal duodenal diverticulum: an unusual cause of acute pancreatitis.

In a series of over 1,000 patients with pancreatitis treated by the senior author, few among the younger patients had a clearly definable cause which permitted cure. Two teenage patients are described in whom an intraduodenal hollow polyp or sac-like diverticulum at the level of the ampulla of Vater was associated with acute pancreatitis. Subtotal resection of the diverticulum provided excellent results.

Posterior gastric artery and its significance as seen in angiograms.

The posterior gastric artery was detected angiographically in 46 or 100 patients (46 percent). The importance of radiologic detection of the presence or absence of this artery is emphasized, especially in surgical procedures related to the stomach and immediately adjacent structures.