Edward W. Nelson

Hypersensitive carotid sinus syncope treated by implantable demand cardiac pacemaker

Abstract A patient with hypersensitive carotid sinus syncope was treated by implantation of a permanent demand cardiac pacemaker. The observations suggest the value of demand pacing for persons whose major manifestation is significant bradycardia followed by hypotension. The potential value of this form of therapy can be tested in the individual case by temporarily stimulating the carotid sinus and electrically pacing the heart while monitoring both rhythm and mean arterial pressure.

Ultrasonographic demonstration of the pancreatic duct.

During a 4-year period, 375 patients with clinically suggestive pancreatic disease were examined with gray scale ultrasound. In 14 patients, the pancreatic duct itself was demonstrated. All of these had clinical or laboratory evidence for, and radiologically or surgically proven, pancreatic duct obstruction. Etiology of the obstruction was either tumor, chronic pancreatitis, pancreatic abscess, pseudocyst, or stricture of the duct at the papilla of Vater. Two patients had Crohns disease of the duodenum.