eISSN: 2299-0054
ISSN: 1895-4588
Videosurgery and Other Miniinvasive Techniques
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vol. 11
Original paper

Features of respiratory support during laparoscopic correction of inguinal hernias in children

Volodymyr Mishchuk
Orest Lerchuk
Andriy Dvorakevych
Volodymyr Khomyak

Videosurgery Miniinv 2016; 11 (2): 55–59
Online publish date: 2016/05/11
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Papers, Reference Manager, RefWorks, Zotero
Introduction: The objectives were to study the changes in the mechanics of respiration in children undergoing surgery depending on the value of intra-abdominal pressure (IAP) during laparoscopic procedures, and to compare the effects of different mechanical ventilation modes – pressure controlled (PCV) and volume controlled (VCV) ventilation – on the mechanics of respiration considering carboxyperitoneum conditions (CP).

Aim: To study the changes in the mechanics of respiration in operated children depending on the value of intra-abdominal pressure during laparoscopic procedures.

Material and methods: Fifty-two children aged 1–12 years undergoing laparoscopic surgery on inguinal hernias were randomly allocated to receive mechanical ventilation using either VCV (n = 24) or PCV (n = 28) mode. Respiratory mechanics were measured before application of carboxyperitoneum (initial data) and after the gas had been pumped into the abdominal cavity, at the following intra-abdominal pressure values: 6 mm Hg, 8 mm Hg, 10 mm Hg, 12 mm Hg, 14 mm Hg.

Results: Elevation of intra-abdominal pressure due to carboxyperitoneum conditions had a negative effect on the mechanics of respiration. Changes in the respiratory mechanics were restrictive in nature in both groups. The patients who were receiving pressure controlled ventilation showed a decrease in tidal volume, exhaled minute volume, and dynamic lung compliance, which affected the gas exchange at intra-abdominal pressure values ≥ 12 mm Hg. Patients who were receiving volume controlled ventilation showed an increase in peak inspiratory pressure and mean airway pressure and a decrease in dynamic lung compliance in response to higher intra-abdominal pressure. A significant increase of concentration of exhaled carbon dioxide (etCO2) was registered at IAP ≥ 12 mm Hg.

Conclusions: Application of carboxyperitoneum causes increased intra-abdominal pressure and restrictive disorders in respiratory mechanics. Intra-abdominal pressure readings within 8–12 mm Hg allow laparoscopic procedures to be performed without significant gas exchange disorders in children older than 1 year.

pneumoperitoneum, respiratory mechanics

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