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ORIGINAL ARTICLE
Year : 2019  |  Volume : 13  |  Issue : 2  |  Page : 347-353

Pressure-controlled ventilation with volume guarantee compared to volume-controlled ventilation with equal ratio in obese patients undergoing laparoscopic hysterectomy


1 Department of Anesthesia and Surgical Intensive Care, Faculty of Medicine, Mansoura University, Mansoura, Egypt
2 Department of Surgical Oncology, Mansoura Oncology Center, Mansoura University, Mansoura, Egypt
3 Department of Obstetrics and Gynecology, Faculty of Medicine, Mansoura University, Mansoura, Egypt

Correspondence Address:
Mona Gad
Department of Anesthesia and Surgical Intensive Care, Faculty of Medicine, Mansoura University, Mansoura
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/aer.AER_82_19

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Background: Laparoscopic hysterectomy operations especially for obese patients necessitate Trendelenburg position and pneumoperitoneum with carbon dioxide, which could affect cardiac and pulmonary functions. The present study aimed to compare the impact of pressure-controlled ventilation with volume-guaranteed (PCV-VG) and volume-controlled ventilation (VCV) with equal ratio ventilation (ERV), i.e., I: E ratio of 1:1 on hemodynamics, respiratory mechanics, and oxygenation. Patients and Methods: Eighty females with body mass index (BMI) >30 kg/m2 and with physical status American Society of Anesthesiologists Classes I and II undergoing laparoscopic hysterectomy were allocated randomly to either PCV-VG (Group P) or VCV with ERV (Group V). The ventilation parameters, hemodynamics, and arterial blood gases (ABGs) analysis were recorded at four times: (T1): after the anesthetic induction while in supine position by 10 min, (T2 and T3): after the CO2 pneumoperitoneum and Trendelenburg positioning by 30 and 60 min, respectively, and (T4): after desufflation and resuming the supine position. Results: The peak inspiratory pressure in Group P recorded significant lower values than in Group V while the dynamic compliance was greater significantly in Group P than in Group V. No significant differences were reported as regards the ABG analysis, oxygenation, and hemodynamic data between both groups. Conclusion: In obese females undergoing laparoscopic hysterectomy surgeries, PCV-VG was superior to VCV with ERV as it provided higher dynamic compliance and lower peak inspiratory pressure that could be preferable, especially in those patients in whom cardiopulmonary function could be more susceptible to impairment.


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