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Dive into the research topics where J. J. G. Bannenberg is active.

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Featured researches published by J. J. G. Bannenberg.


Surgical Endoscopy and Other Interventional Techniques | 2000

Hand-assisted laparoscopic surgery : An overview

D. W. Meijer; J. J. G. Bannenberg; J. J. Jakimowicz

BackgroundAdvanced laparoscopic surgery is complex and time-consuming. Achieving consistent efficacy and safety throughout the entire procedure is always a problem. For this reason, hand-assisted laparoscopic surgery (HALS) was developed.MethodsDevices were designed to allow manual access to the abdomen through the utility laparotomy. By using one hand in the abdomen during laparoscopy, the surgeon regains direct tactile sensation and acquires improved handeye coordination. The safety of the individual devices has been tested in RCT for the registration of the individual devices. An index known as Surgical Action Efficiency was calculated for in six patients undergoing laparoscopic colon resection and six patients with hand-assisted colon resections.ResultsAll of the registered devices are safe. Surgical Action Efficiency for the laparoscopy group was 55±14%; for the HALS group, it was 71±4%. his result is statistically significant (p<0.05).ConclusionHALS is a safe and efficient method by which it is possible to combine the established convenience and safety of open surgery with the advantages of minimally invasive surgery.


Surgical Endoscopy and Other Interventional Techniques | 1997

Hemodynamics during laparoscopic extra- and intraperitoneal insufflation An experimental study

J. J. G. Bannenberg; B. M. P. Rademaker; F. M. J. A. Froeling; D. W. Meijer

AbstractBackground: Total extraperitoneal laparoscopic surgery is an alternative to the laparoscopic transperitoneal route; however, its effects on hemodynamics have not been adequately studied. This experimental study compared the effects of intraperitoneal insufflation and extraperitoneal insufflation on hemodynamics and oxygen transport. Methods: Sixteen pigs were randomly assigned for intraperitoneal insufflation or extraperitoneal insufflation with 15 mmHg carbon dioxide. Hemodynamic and oxygen transport parameters were taken during an hour of insufflation and analyzed for statistical differences. Results: During extraperitoneal CO2 pneumoperitoneum central venous filling pressures (central venous pressure, pulmonary capillary wedge pressure and mean pulmonary arterial pressure) and end-tidal CO2 increased slower but to a similar magnitude in comparison to intraperitoneal insufflation. Cardiac output and indices of oxygen consumption and oxygen delivery were equally affected by both types of insufflation. Arterial CO2 pressure increased significantly more during intraperitoneal insufflation. Conclusion: The data from this study suggest that extraperitoneal insufflation might result in less cardiovascular impairment than intraperitoneal insufflation.


Surgical Endoscopy and Other Interventional Techniques | 1995

Hemodynamics during laparoscopy in the supine or prone position

J. J. G. Bannenberg; B. M. P. Rademaker; P. F. Gründeman; C.J. Kalkman; D. W. Meijer; P. J. Klopper

During laparoscopy elevations in arterial pressure and a decrease in cardiac output have been reported. Laparoscopic surgery performed in the prone position may be advantageous for some surgical procedures, but the hemodynamic effects of pneumoperitoneum in this position have not been studied. We studied the effects of different levels of increased intraabdominal pressure on hemodynamics and oxygen transport in eight pigs in the prone and the supine position. Increases in intraabdominal pressure did not result in decreased cardiac output or in a reduction of oxygen transport and consumption in either position. These results suggest that laparoscopy in the prone position does not result in more severe hemodynamic depression than laparoscopy in the supine position.


Surgical Endoscopy and Other Interventional Techniques | 1995

Laparoscopy without pneumoperitoneum

B. M. P. Rademaker; D.W. Meyer; J. J. G. Bannenberg; P. J. Klopper; C.J. Kalkman

Laparoscopic surgery with CO2 insufflation is associated with adverse effects on hemodynamics and gas exchange. The abdominal wall retractor (AWR) is an alternative for pneumoperitoneum. Hemodynamics and gas exchange during the use of an AWR were compared to those of CO2 pneumoperitoneum.In eight pigs subjected to 1 h of CO2 pneumoperitoneum or abdominal wall retraction, hemodynamics, gas exchange, and oxygen transport were studied in a randomized cross-over study design.The only change observed during abdominal wall retraction was mild respiratory alkalosis. In contrast, during CO2 pneumoperitoneum mean arterial blood pressure increased 13%, central filling pressures doubled, and a small increase in cardiac output was observed. Peak airway pressures increased 50%, end-tidal CO2 increased 20%, and respiratory acidosis was induced (arterial pH from 7.46±0.07 to 7.31±0.06 and pCO2 from 33±3 mmHg to 53±4 mmHg). Arterial PO2 decreased but mixed venous oxygen saturation and oxygen consumption were unaffected.In contrast with CO2 pneumoperitoneum, laparoscopy using abdominal wall retraction was not associated with adverse effects on hemodynamics or gas exchange.


Surgical Endoscopy and Other Interventional Techniques | 1994

The prone position: using gravity for a clear view

J. J. G. Bannenberg; D. W. Meijer; P. J. Klopper

Obtaining a clear view during laparoscopic surgery in the posterior abdominal cavity, on the abdominal backwall, or during colon surgery is time consuming and therefore one of the major objections to these procedures. In an experimental setting we positioned the animals in the prone position using the abdominal flanks to introduce the trocars. Our experience with this position is that a clear and unobstructed view of the abdominal back wall and the large intestines is obtained, facilitating laparoscopic procedures in these areas.


Surgical Endoscopy and Other Interventional Techniques | 1993

Experimental videothoracoscopic cannulation of the left atrial appendix

P. F. Gründeman; D. W. Meijer; J. J. G. Bannenberg; R. Tukkie; P. J. Klopper

SummaryRapid implementation of left ventricular assistance without thoracotomy for temporary support of patients with severe, life-threatening, acute cardiac power failure potentially expands applications of such support devices. A thoracoscopic technique for direct cannulation of the left atrium is described. In healthy closed-chest pigs, it proved a feasible method for effective volume unloading of the left ventricle.


Surgical Endoscopy and Other Interventional Techniques | 1997

Laparoscopic cholecystectomy using abdominal wall retraction: hemodynamics and gas exchange, a comparison with conventional pneumoperitoneum

D. W. Meijer; B.P. Rademaker; S. Schlooz; W. A. Bemelman; L. T. de Wit; J. J. G. Bannenberg; T. Stijnen; D. F. Gouma


Surgical Endoscopy and Other Interventional Techniques | 1995

Laparoscopy without pneumoperitoneum: Effects of abdominal wall retraction versus carbon dioxide insufflation on hemodynamics and gas exchange in pigs

B. M. P. Rademaker; D.W. Meyer; J. J. G. Bannenberg; P. J. Klopper; C.J. Kalkman


Journal of Laparoendoscopic & Advanced Surgical Techniques | 1999

Splenectomy Revised: Manually Assisted Splenectomy with the Dexterity Device™—A Feasibility Study in 22 Patients

D. W. Meijer; D. Gossot; J.J. Jakimowicz; L.T. De Wit; J. J. G. Bannenberg; D. J. Gouma


Surgical Endoscopy and Other Interventional Techniques | 1995

Hemodynamics during laparoscopy in the supine or prone position. An experimental study.

J. J. G. Bannenberg; B. M. P. Rademaker; P.F. Grndeman; C.J. Kalkman; D. W. Meijer; P. J. Klopper

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D. W. Meijer

University of Amsterdam

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C.J. Kalkman

University of Amsterdam

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D.W. Meyer

University of Amsterdam

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R. Tukkie

University of Amsterdam

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D. F. Gouma

University of Amsterdam

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D. J. Gouma

University of Amsterdam

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