John T. Hagen

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Vertical banded gastroplasty creates a channel by two applications of the TA-90 stapler from an end-to-end anastomosis window above the crow's foot to the angle of His, against a 32 F. tube along the lesser curvature. The caudad end of the channel is restricted by a 5 cm collar. Thirty-one obese patients more than 45 kg overweight were studied by interview,(More)
Congestive heart failure is associated with cardiac adrenergic nerve terminal changes and beta-adrenoceptor density downregulation. To study the temporal sequence of these changes, we performed studies in rabbits at 2, 4, and 8 wk of cardiac pacing (360 beats/min) and at 1, 2, and 4 wk after cessation of pacing. Rapid pacing produced left ventricular (LV)(More)
Symptom review, barium swallow, endoscopy and esophageal manometry were performed on 55 massively obese patients, greater than twice ideal weight. Symptoms of reflux and/or heartburn were present in 40 patients (72.7%). Symptoms were present in 81.5% of the 27 patients aged greater than or equal to 35 yr and 64.3% of the 28 patients less than 35 yr (p less(More)
Deep brain stimulation (DBS) has added to the comfort and quality of life for an increasing number of Parkinson's disease (PD) patients. The anesthesiologist needs to understand the pathophysiology of the disease, the surgical procedure, and its postoperative implications to most effectively manage these patients. This article examines the role of the(More)
We have studied the mechanisms of the increased dosage requirements of the H2-receptor antagonist cimetidine in paediatric burned patients in a pharmacokinetic and pharmacodynamic study. Cimetidine (10–15 mg·kg−1) was given to 21 burned children and multiple blood samples were obtained for determination of plasma cimetidine concentrations and(More)
INTRODUCTION Despite its minimally invasive approach, laparoscopic surgery can cause considerable pain. Regional analgesic techniques such as the rectus sheath block (RSB) offer improved pain management following elective umbilical hernia repair in the pediatric population. This effect has not been examined in laparoscopic single-incision surgery in(More)
Total parenteral nutrition or elemental diet has frequently replaced the use of a proximal stoma. Since 1969, data on patients receiving these non-residue nutritional methods have been collated daily; there were 63 patients where the surgeon believed that a proximal stoma would otherwise have been indicated. In 35 patients, these methods were used(More)
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