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H Niebuhr

Publications and source records attributed to H Niebuhr.

16 recordsLinked to original sources
PubMed2000

[Image tracking system. A new technique for safe and cost-saving laparoscopic operation].

The potential for improvement of the results of laparoscopic operations as well as necessity of enhanced efficiency in the health-care systems are the main reasons for development and practical use of robotic systems in the field of laparoscopic surgery. While robotic systems imitate the human camera-holder the Image Tracking System (ImagTrac, Olympus, Tokio) is based on another principle: A voice-activated zoom function allows change between overview and detailed view. In the zoom-in position it is possible to select four different fields of view. The results of a clinical trial with control group show that the system: 1. Makes it possible to dispense with the human camera-holder without compromising patient safety, sometimes at greater convenience to the surgeon. 2. Makes it possible for routine laparoscopic operations such as laparoscopic cholecystectomy and laparoscopic hernia repair to be performed (as solo surgery) by a team of a surgeon and a nurse only. 3. Is more cost-effective than robotic systems with a similar range of features.

Adult↗
PubMed1998

[Routine ultrasound in diagnosis of acute appendicitis].

A prospective trial reveals that routine ultrasound in suspected appendicitis in the hands of experts can lead to a specificity of 94% and a sensitivity of 90% in opposite to 82% and 78% for clinical findings alone. The rate of "negative laparotomies" has decreased from 22% to 11%.

Acute Disease↗
PubMed1992

[Shouldice hernia report with a PTFE suture].

Between 4/90 and 2/91 we repaired 105 inguinal hernias according to Shouldice's technique. Instead of an absorbable suture (PDS no.0) we used a PTFE suture no.0. By this study we tried to assure that it is allowed to use as well the non resorbable PTFE suture no.0. in hernia repair as the slowly resorbable PDS suture no.0. We compared the rate of postoperative hematomas, seromas and pus collections and the rate of early recurrences in both groups. The results of the PTFE group were compared with those of a prospective study (n = 100) between 6.88 and 4.89 when we used PDS suture no 0. In the PTFE group we saw 9.5% hematomas, 1.9% seromas and 0.9% pus collections. In the PDS group 4% of the patients developed a hematoma, 4% a seroma and 2% a pus collection. We saw 1.9% early recurrences after 8 months (PTFE: 7-11; median: 9 months) and 3.2% after 9 months (PDS: 8-13; median: 10 months) medium follow-up time. The results did not significantly differ between both groups. (Chi-square test: p = 1.0). By these results we can draw the following conclusions: 1. The use of a non absorbable PTFE suture no 0 in hernia repair is of no disadvantage. 2. The principle of hernia repair is the induction of scar tissue in the site of hernioplasty; the use of slowly resorbable suture material is allowed as well.

Abscess↗
PubMed1992

[Standardized ultrasound study with computer-assisted documentation of findings in diagnosis of polytrauma patients].

Based on the results of a prospective trial to establish the value of routine ultrasound examination in cases of polytrauma or blunt abdominal trauma, we report on our standard ultrasound examination and computer assisted documentation of the findings. Between May 1988 and December 1990 we examined 233 patients with polytrauma or blunt abdominal trauma. The results were compared with those of abdominal lavage (n = 47) performed during the same period. We found a sensitivity of 100% and a specificity of 99.5% for the ultrasound findings and a sensitivity of 80% and a specificity of 100% for the abdominal lavage. We conclude that ultrasonography should be the first diagnostic procedure used in the emergency room in cases of polytrauma and blunt abdominal trauma.

Abdominal Injuries↗
PubMed1991

[Variable head endoprosthesis in the treatment of femoral neck and trochanteric fractures].

UNLABELLED: During 1978 to 1987 361 patients (312 female, 49 male) were treated with Variokopf-prosthesis (a bipolar hip prosthesis with a variable head) after femoral neck fracture, per- or subtrochanteric fracture. The mean age was 83 years. During postoperative treatment 73 patients (20.2%) died. 288 could be discharged. 98 of these died before the follow-up examination. The follow-up was possible in 103 cases. A good to satisfactory result was found in 91 cases (88%). A poor result in twelve cases (12%) (Score by Merle d'Aubigne et al.). CONCLUSIONS: 1. The Variokopf-prosthesis is a favourable alternative to a normal hip prosthesis (e.g. Moore), 2. The implantation of a Variokopf-prosthesis was found to be indicated as well in the treatment of medial femoral neck fractures as in special cases in the treatment of per- or subtrochanteric fractures. 3. The operation should be performed soon after the trauma--after a two to three days treatment. 4. The dorsal approach is superior to the lateral in the treatment of hip fractures because of short operating time and the possible early mobilisation of the patients.

Aged↗
PubMed1991

[2 rare pancreatic tumors as incidental findings. A case report].

We report two cases of rare tumours of the pancreas: one case of a cystadenoma and one case of a PP-oma with no hormonal activity. Both cases were discovered accidentally while screening examination of other reasons. Guided by these cases we draw the following conclusions: 1. Ultrasound is the outstanding screening in diagnosis of rare pancreas tumours. 2. Surgery is the treatment of choice. 3. Final diagnosis can only be made by histology. 4. Immunohistochemistry is the best method in differentiation of endocrine tumours.

Aged↗
PubMed1989

[A grenade splinter as the cause of cholangitis and icterus].

Forty five years after being injured by a grenade splinter a now 74-year old man suddenly developed colicky pain in the right upper abdomen, accompanied by colourless stools, jaundice and fever. The white cell count was 21,000/microliters, bilirubin was raised to 10.9 mg/dl, and ultrasound examination revealed a sharply circumscribed echo in the distal choledochal duct. Retrograde endoscopic cholangiography revealed a metal-dense concrement, presumably the nidus of gallstone formation. After endoscopic emptying of the bile duct the patient quickly improved so that cholecystectomy could be performed. The long symptom-free interval was most likely due to an at first peripheral position of the splinter in liver tissue. The secretory pressure of the liver cells then probably caused a slow migration into the choledochal duct.

Aged↗
PubMedDate not supplied

Laparoscopic surgery. Mistakes and risks when the method is introduced.

Laparoscopic cholecystectomy and appendectomy are widely accepted in clinical practice. In the initial stage, when the method is introduced, there are a number of mistakes, risks, and complications possible. The surgeons, the staff, the instruments, the anesthetist, and, last but not least, the patient, are among the possible contributing causes. We try to analyze the reasons and conditions leading to possible complications. Complications we have experienced are reported. In our conclusions we try to show how it is possible to avoid severe problems.

Adult↗