| Intraperitoneal pressure and volume of gas injected as effective parameters of the correct position of the Veress needle during creation of pneumoperitoneum. | |
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MedLine Citation:
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PMID: 19792865 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVE: The aim of this work was to establish reliable parameters of the correct position of the Veress needle in the peritoneal cavity during creation of pneumoperitoneum. METHODS: The Veress needle was inserted into the peritoneal cavity of 100 selected patients, and a carbon-dioxide flow rate of 1.2 L/min and a maximum pressure of 12 mm Hg were established. Intraperitoneal pressure (IP) and the volume of gas injected (VG) were recorded at the beginning of insufflation and at every 20 seconds. Correlations were established for pressure and volume in function of time. Values of IP and VG were predicted at 1, 2, 3, and 4 minutes of insufflation, by applying the following formulas: IP = 2.3083 + 0.0266 x time +8.3 x 10(-5) x time(2) - 2.44 x 10(-7) x time(3); and VG = 0.813 + 0.0157 x time. RESULTS: A strong correlation was observed between IP and preestablished time points during creation of the pneumoperitoneum, as well as between VG and preestablished time points during creation of the pneumoperitoneum, with a coefficient of determination of 0.8011 for IP and of 0.9604 for VG. The predicted values were as follows: 1 minute = 4.15; 2 minutes = 6.27; 3 minutes = 8.36; and 4 minutes = 10.10 for IP (mm Hg); and 1 minute = 1.12; 2 minutes = 2.07; 3 minutes = 3.01; and 4 minutes = 3.95 for VG (L). CONCLUSIONS: Values of IP and VG at given time points during insufflation for creation of the pneumoperitoneum, using the Veress needle, can be effective parameters to determine whether the needle is correctly positioned in the peritoneal cavity. |
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Authors:
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João L M C Azevedo; Otavio C Azevedo; Albino A Sorbello; Otavio M Becker; Otavio Hypolito; Dalmer Freire; Susana Miyahira; Afonso Guedes; Glicia C Azevedo |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of laparoendoscopic & advanced surgical techniques. Part A Volume: 19 ISSN: 1557-9034 ISO Abbreviation: J Laparoendosc Adv Surg Tech A Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-12-07 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9706293 Medline TA: J Laparoendosc Adv Surg Tech A Country: United States |
Other Details:
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Languages: eng Pagination: 731-4 Citation Subset: IM |
Affiliation:
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Department of Surgery, Federal University of São Paulo, São Paulo, Brazil. jozevedo.dcir@epm.br |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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