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Biomedical subjects

G Edelmann

Publications and source records attributed to G Edelmann.

At least 19 recordsLinked to original sources
PubMed1993

The effects of norepinephrine on hemodynamics and renal function in severe septic shock states.

OBJECTIVE: To investigate the effect of norepinephrine (NE) on hemodynamics, oxygen metabolism and renal function in patients with severe septic shock. DESIGN: Prospective study. SETTING: Post-operative ICU in a municipal general hospital. PATIENTS: The study included 56 patients with extreme low resistance states due to abdominal sepsis, who remained hypertensive (MAP < 60 mmHg) despite optimal fluid therapy and dopamine > 20 micrograms/kg/min and cumulative doses of dopamine and dobutamine > 30 micrograms/kg/min, respectively. INTERVENTIONS: After registration of baseline values dopamine was reduced to 2.5 micrograms/kg/min, and norepinephrine was administered starting at a dose of 0.05 micrograms/kg/min until a mean arterial pressure of more than 60 mmHg could be maintained. MEASUREMENTS AND RESULTS: During norepinephrine infusion (dosage ranging between 0.1-2 micrograms/kg/min, mean dose rate: 0.4 micrograms/kg/min) mean arterial pressure and systemic vascular resistance index increased significantly (p < 0.001). After 8 h a significant increase in stroke volume (p < 0.05) and decrease in heart rate (p < 0.05) could be observed. There was no significant change in cardiac index (CI), oxygen delivery (O2AVI) and oxygen consumption (VO2I). Creatinine clearance increased significantly (p < 0.005) from a control value of 75 +/- 37 ml/min to 102 +/- 43 ml/min after 48 h NE-treatment. CONCLUSION: Our results suggest that norepinephrine can be used safely in the treatment of severe septic shock states. Mean arterial pressure and glomerular filtration rate improved markedly without deleterious effects on CI, O2AVI and VO2I.

Acute Kidney Injury↗
PubMed1990

[Noradrenaline in the "high output-low resistance" state of patients with abdominal sepsis].

We investigated the impact of norepinephrine administration on hemodynamics, oxygen metabolism and renal function in patients in severe septic shock. PATIENTS AND METHODS. Twenty-six patients with extremely low resistance who were between 24 and 87 years of age were included in the study. In 7 patients, acute necrotizing pancreatitis and superinfection was diagnosed; 19 patients suffered from diffuse peritonitis. The entrance criteria for the study were: a mean arterial pressure (MAP) of below 60 torr or, in chronic hypertensive patients, a decrease in systolic pressure of more than 50 torr compared to previous values, despite volume optimization, and dopamine greater than 20 micrograms/kg per min and cumulative doses of dopamine/dobutamine greater than 30 micrograms/kg per min, respectively. Cases with tachycardia greater than 140/min were also included in the study even when the inotropic medication dose was lower. After registration of baseline values, dopamine was reduced to 2.5 micrograms/kg per min, and norepinephrine was administered starting at a dose rate of 0.05 micrograms/kg per min, until a MAP of greater than 60 torr could be maintained. RESULTS. Of the 26 patients investigated, 16 survived; 10 patients with persisting sepsis died due to multiple organ failure (mortality: 38.5%). During the study period, a norepinephrine dosage ranging between 0.1 and 2 micrograms/kg per min was necessary to stabilize the arterial pressure. The mean dose rate was 0.3 micrograms/kg per min. The mean arterial pressure and systemic vascular resistance index showed a statistically significant increase of 30 and 20%, respectively, just after 1 h and distinctly remained above the initial values in the further course. The cardiac index remained constant or increased slightly. After 24 h a statistically significant increase in stroke volume and a decrease in heart rate could be observed. Creatinine clearance increased significantly from the control value of 73 +/- 48 ml/min to 114 +/- 37 ml/min after 48 h under norepinephrine treatment. O2-delivery and O2-consumption did not change significantly, although they showed a slight tendency to increase. CONCLUSION. When patients are in a septic high output-low resistance condition, particular attention must be paid to maintaining sufficient mean arterial pressures. Our results suggest that this essential goal can be achieved by norepinephrine. The mean arterial pressure and glomerular filtration rate improved markedly, and there was no evidence of bad effects such as an increased afterload on critical parameters like cardiac index, O2-delivery and O2-consumption.

Acute Disease↗
PubMed1984

[Technic of the surgical excision of villous tumors].

Villous tumours of the colon and rectum are characterized by a high incidence of malignancy (50%) and by their tendency to recur. Invasive malignant villous tumours require wide excision in the same way as adenocarcinomas. Non-invasive tumours (stage 0 and stage I) should be treated like benign villous tumours. Villous tumours of the colon, i.e. situated more than 15 cm from the anus, are removed by a short colonic resection. Villous tumours of the rectum which are small and pedunculated or sessile, situated less than 8 cm from the anus can be excised via the trans-anal route, provided a margin of healthy mucosa is removed around the villous zone. High rectal tumours which are very large or diffuse are removed by a trans-sacral approach, low extensive tumours are removed by a coccyperineal or trans-sphincteric approach. Recurrences (30 to 40%) always occur after incomplete excision, especially after a trans-anal resection. Benign tumours can also recur, although remaining benign, and require a further local excision.

Biopsy↗
PubMed1983

[Colonic occlusions. Retrospective cooperative study of 497 cases].

A retrospective multicenter study involving 12 digestive surgery centers was conducted on 497 cases of colon obstruction. The most frequent cause of colon obstruction was colo-rectal cancer (71 p. cent of cases), but many other etiologies were involved, including 61 cases of torsion and 37 patients with occlusive sigmoiditis. Differential clinical and radiological features in each etiological group are discussed, the results of therapy undertaken analyzed, and a reasonable line of conduct proposed, adapted to each situation, with the objective of attempting to reduce mortality which still affects 25 p. cent of cases operated upon.

Adult↗
PubMed1982

[Surgical treatment of acute complicated colitis. Report on twenty-eight cases (author's transl)].

Experience with 28 patients with acute diffuse complicated colitis operated on in emergency or semi emergency by the same surgical team is reviewed. The forms with colonic dilatation are the most numerous but do not resume the serious complications which may occur in the course of non specific inflammatory diseases of the colon. The operative mortality in this series was 10,7% (3/28). Peritoneal sepsis was the most significant factor contributing to mortality. It appears that the keystone to successful management is to prevent colonic perforation. Protracted medical management may be at last partly responsible for this complication. Failure of intensive medical therapy to induce rapid improvement constitutes an indication for definitive surgical treatment.

Acute Disease↗
PubMed1981

[Sphincterial conservation in surgery of carcinoma of the rectum (author's transl)].

The present study reports the results of several methods used to perform abdominal resection (with anastomosis fastened by means of sutures and clip-gun) abdomino-transanal method designed to preserve sphincter function (Babcok,, Toupet, Duhamel), anterior abdomino-perineal resection and tumorectomy. The indications of these different surgical techniques are discussed and the authors point out the necessity to do not give up the carcinologic needs to the sphincteral preservation.

Anal Canal↗