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Biomedical subjects

W B Long

Publications and source records attributed to W B Long.

At least 73 records · Page 4Linked to original sources

Amylase isoenzyme clearances in normal subjects and in patients with acute pancreatitis.

Renal clearances of amylase isoenzymes, expressed as percentages of creatinine clearances, were determined in 20 normal subjects and in 8 patients with acute pancreatitis. The isoenzyme assay employed thin layer isoelectric focusing, starch iodine staining, and densitometry. Normal clearance of pancreatic-like amylase (mean +/- SE: 3.00 +/- 0.40%) was greater than the clearance of salivary-like amylase (0.51 +/- 0.06%) in ea ch individual (P less than 0.001). However, the amount of pancreatic amylase in the serum was not the major determinant of amylase clearance. Normal clearance of pancreatic-like amylase was significantly (P less than 0.001) less than the clearance of total serum amylase in acute pancreatitis (6.49 +/- 1.07%). In pancreatitis the clearance of pancreatic-like amylase (7.29 +/- 1.19%) and the clearance of salivary-like amylase (4.55 +/- 1.02%) were both elevated compared to normal (P less than 0.001). These findings indicate that the increased clearance of amylase in pancreatitis results from a change in renal function rather than a change in serum amylase. Renal changes not reflected by increased serum creatinine or more than mild proteinuria may be manifestations of the systemic toxicity of acute pancreatitis.

Acute Disease↗

Zinc and wound healing.

A review of the literature on zinc and wound healing shows the many gaps of knowledge which still exist. This study of the histologic appearance of wound healing in rats fed various diets demonstrates the serum zinc levels achieved by such diets. No significant improvement was observed in the rate of healing for any one group, but a number of histologic differences were observed.

Animals↗

Alcohol intoxication and serum osmolality.

The relation between serum osmolality and blood-alcohol was studied prospectively in 565 acute trauma patients. The two measurements were closely correlated. It is therefore possible to estimate the blood-alcohol from serum osmolality to assist in the clinical management of acutely injured patients.

Accidents↗

Abdominal lavage in blunt trauma.

A technique for abdominal lavage is described and was used to evaluate the abdomen of 671 multiple trauma victims. In 44 per cent (299 cases) there was a bloodstained return and these were regarded as positive. Patients with a positive result underwent exploratory laparotomy which revealed that 89 per cent had significant intra-abdominal trauma requiring a surgical procedure, 8 per cent had trauma which did not require any active surgical correction and 3 per cent had no abdnormal findings. Of all the lavages performed, there were 0-11 per cent false positive and 0-03 per cent false negative results. The value of the test in the context of multiple trauma is emphasized.

Abdominal Injuries↗

Shock.

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Central Venous Pressure↗

Transjugular insertion of biliary stents (TIBS) in two patients with malignant obstruction, ascites, and coagulopathy.

Two patients with pancreatic malignancies presented with biliary obstruction which could not be treated from an endoscopic approach. Standard transhepatic biliary drainage was relatively contraindicated because of moderate ascites and coagulopathy related to underlying liver disease. In one patient, a transjugular, transvenous approach was used to deliver a Wallstent endoprosthesis across the distal common bile duct obstruction in a single step procedure. In the second case, a previously placed biliary Wallstent was revised with an additional stent from a similar approach. Transjugular biliary catheterization offers a valuable alternative approach for primary stent placement or revision in patients with contraindication to standard transhepatic drainage.

Adenocarcinoma↗