When it's not appendicitis.

Other pathology besides appendicitis may be found in patients with right lower quadrant pain. This has led some to advocate diagnostic laparoscopy/laparoscopic appendectomy for all such cases. This policy would substantially raise the costs of care without a priori proof of its efficacy. However, a selective approach on when to proceed with diagnostic laparoscopy will depend on the frequency of finding unexpected, nonappendiceal pathology. To determine this, we reviewed our experience with 202 appendectomies. For females < 50 years old, 33 per cent had normal appendices, 12 per cent had periappendicitis, 47 per cent had acute appendicitis, 12 per cent had perforated appendicitis, and 26 per cent had other nonappendiceal pathology. For males < 50 years old, 13 per cent had normal appendices, 8 per cent had periappendicitis, 67 per cent had acute appendicitis, 15 per cent had perforated appendicitis, and 5 per cent had other pathology. For patients > 50 years old, 7 per cent had normal appendices, 13 per cent had periappendicitis, 33 per cent had acute appendicitis, 60 per cent had perforated appendicitis, and 20 per cent other pathology. Other nonappendiceal pathology was found in 42 per cent of females < 50 with normal appendices, 57 per cent with periappendicitis, and 14 per cent with acute/perforated appendicitis. In males < 50 years, 50 per cent of those with normal appendices, 10 per cent of those with periappendicitis, and 0.7 per cent of those with acute appendicitis had nonappendiceal pathology. In conclusion, women of childbearing age and patients > 50 years old have a significant incidence of nonappendiceal pathology. In this group of patients, a diagnostic laparoscopy appears justifiable to identify the cause of the abdominal pain.

Quality of life scale for gastroesophageal reflux disease.

BACKGROUND: Treatment of uncomplicated gastroesophageal reflux disease (GERD) is primarily to improve the symptoms of the patient. However, measurement of symptomatic outcome is difficult because it is as the patient perceives it to be and not "objective." This creates a need to develop a simple and understandable instrument to measure symptomatic outcome. STUDY DESIGN: All patients referred for evaluation of GERD were eligible for this prospective study. During the initial visit, patients were asked to complete the Gastroesophageal Reflux Data Sheet. This ten-item questionnaire included an overall assessment of satisfaction; the best possible score was 0, and the worst was 45. The evaluation included history, physical examination, and additional studies, including upper gastrointestinal series, esophagogastroduodenoscopy, esophageal manometry, and 24-hour esophageal pH monitoring as indicated. Initial treatment was medical with histamine2-blockers, omeprazole, cisapride, or both. If a patient was dissatisfied with medical treatment and had both a hypotensive lower esophageal sphincter and abnormal results of the 24-hour pH monitoring, then operative treatment with either laparoscopic or open Nissen or Toupet fundoplication was offered. After approximately three months of medical treatment or one month after operative treatment, patients were asked to complete the questionnaire again. Data were analyzed using nonparametric tests and linear regression analysis. RESULTS: A total of 72 patients were assessed, and 100 percent of them completed the questionnaire. Patients who were satisfied with their condition had a median health-related quality of life (HRQL) score of five, and those who were dissatisfied had a median score of 26 (p < 0.000001). Patients who ultimately chose surgical therapy had a median preoperative score of 28, compared with 15 for patients who chose to continue medical therapy (p = 0.0001). The change in HRQL score from before treatment to after treatment for surgical patients was 27 compared with 11 for medically treated patients (p < 0.002). Items 1 through 6 of the questionnaire were individually sensitive to the effects of treatment. However, there was no correlation between HRQL and the composite pH score or with the lower esophageal sphincter pressure. CONCLUSIONS: This HRQL score has advantages over standard health status instruments for GERD including simplicity for patients (and therefore a high compliance rate), ease of understanding for physicians, and sensitivity to the effects of treatment. In addition, it may help determine, early in the course of treatment, patients who may ultimately require surgical therapy, thereby avoiding prolonged, but futile, medical therapy.

Coronary alpha-adrenergic tone and contraction of ischemic myocardium in awake dog.

The effect of neurogenic coronary vasomotor tone upon contraction in ischemic myocardium was investigated in awake, mongrel dogs. The animals were chronically instrumented with a hydraulic occluder around the left circumflex coronary artery; a small catheter was also implanted within the vessel. Ultra-sound crystal pairs were placed distal to the occluder in myocardium perfused by the left circumflex artery. Pacing electrodes were sutured onto the right ventricular conus. During the experiment (n = 6) the occluder was inflated to stenose the vessel; the imposition of cardiac pacing (210/min) in conjunction with this stenosis resulted in depressed contraction of the myocardium distal to the occluder as assessed by the ultra-sound crystals: Segmental shortening decreased to 45.4 +/- 5.4% of unpaced control. Phentolamine, an alpha-antagonist, was then infused into the left circumflex catheter for ten minutes (0.1 mg/min) and the experiment repeated. After the alpha-blockade the combination of coronary stenosis and heart rate pacing decreased segmental shortening to only 84.6 +/- 10.1% of control, which was significantly (P less than 0.01) improved relative to the unblocked condition. In another experiment (n = 4), a less severe stenosis was imposed upon the left circumflex vessel. During pacing, muscle shortening decreased to 94 +/- 8.5% of control. Infusion of phenylephrine, an alpha-agonist, for ten minutes (0.1 mg/min) resulted in a 56.7 +/- 5.9% decrease in shortening during pacing; this was significantly greater (P less than 0.01) than the previous decrease. These data indicate that coronary alpha-adrenergic tone can significantly compromise regional myocardial function even in ischemic muscle whose coronary blood flow reserve has been exhausted.

Effect of Innovar upon the autonomic control of the heart in intact dog.

This experiment compares the regulation of cardiac function in dogs before and after administration of a drug (Innovar-Vet, 0.05 ml/kg) that produces a state of 'neuroleptanalgesia'. All animals (n = 21) were chronically instrumented to measure arterial blood pressure (BP) and heart rate (HR); left ventricular pressure (LVP, n = 10) and ascending aortic flow (n = 4) were also recorded in some animals. After Innovar, the dogs became somnolent and tolerated minor surgical procedures. The paO2 decreased (95 +/- 11 vs 90 +/- 8 mm Hg, pre- vs post-Innovar, mean +/- S.D.; P less than 0.05) while paCO2 increased (33 +/- 5 vs 36 +/- 5 mm Hg; P less than 0.05) when measured (n = 6) 10 min after drug administration. The changes in HR and BP during a 5-min, left circumflex coronary artery occlusion (n = 15) were virtually identical in the awake and sedated states; likewise, no significant differences were detected in the occlusion-induced changes in BP, HR, d(LVP)/dt and stroke volume in the subset of more fully instrumented dogs. However, some significant effects were seen when the Innovar dose was increased to 5 times normal. The effects of bilateral carotid occlusion and dobutamine infusion (8, 16 and 30 mg/kg) were tested in another 7 dogs. Once again, the analysis of variance interaction terms testing the reflex or drug-induced changes in HR, BP and d(LVP)/dt before vs after sedation were not statistically significant.(ABSTRACT TRUNCATED AT 250 WORDS)