Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial
Background: Patients undergoing laparoscopic surgeries are often at risk of developing hypoxemia, increased airway pressure, and barotrauma due to pneumoperitoneum. Prolongation of inspiratory time in a respiratory cycle has been found to improve oxygenation without any increase in peak airway press...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2024-01-01
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| Series: | Journal of Current Research in Scientific Medicine |
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| Online Access: | https://journals.lww.com/10.4103/jcrsm.jcrsm_131_23 |
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| author | Prathap Gunasekaran Ramyavel Thangavelu Sivakumar Segaran |
| author_facet | Prathap Gunasekaran Ramyavel Thangavelu Sivakumar Segaran |
| author_sort | Prathap Gunasekaran |
| collection | DOAJ |
| description | Background:
Patients undergoing laparoscopic surgeries are often at risk of developing hypoxemia, increased airway pressure, and barotrauma due to pneumoperitoneum. Prolongation of inspiratory time in a respiratory cycle has been found to improve oxygenation without any increase in peak airway pressure. Hence, we studied the effect of equal ratio volume-controlled ventilation on the mechanics of respiration and hemodynamics in comparison with conventional ratio volume-controlled ventilation.
Materials and Methods:
Seventy-six general surgical patients aged 18–70 years of age belonging to the American Society of Anaesthesiologists (ASA) I and II posted for upper abdominal laparoscopic surgeries were randomly allocated to two groups. Group A patients were ventilated with volume-controlled 1:1 ventilation whereas Group B patients were ventilated with 1:2 ratio ventilation. Intraoperatively, parameters of respiratory mechanics that included peak airway pressure, mean airway pressure, end-tidal carbon dioxide, and hemodynamics (MAP and heart rate) were recorded. The parameters measured were compared between the two groups using repeated measures ANOVA.
Results:
There were no significant differences in peak airway and MAPs recorded between the two groups (P = 0.82 and P = 0.51, respectively). The hemodynamic parameters, saturation, and end-tidal carbon dioxide measurements also remained similar between the two groups.
Conclusion:
Volume-controlled equal ratio ventilation was found to be similar to conventional ratio ventilation in terms of parameters of respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries. |
| format | Article |
| id | doaj-art-8305c390e6c24b1c99661ae402ef6e29 |
| institution | Kabale University |
| issn | 2542-6273 2455-3069 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Current Research in Scientific Medicine |
| spelling | doaj-art-8305c390e6c24b1c99661ae402ef6e292025-01-23T05:24:23ZengWolters Kluwer Medknow PublicationsJournal of Current Research in Scientific Medicine2542-62732455-30692024-01-01101313710.4103/jcrsm.jcrsm_131_23Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trialPrathap GunasekaranRamyavel ThangaveluSivakumar SegaranBackground: Patients undergoing laparoscopic surgeries are often at risk of developing hypoxemia, increased airway pressure, and barotrauma due to pneumoperitoneum. Prolongation of inspiratory time in a respiratory cycle has been found to improve oxygenation without any increase in peak airway pressure. Hence, we studied the effect of equal ratio volume-controlled ventilation on the mechanics of respiration and hemodynamics in comparison with conventional ratio volume-controlled ventilation. Materials and Methods: Seventy-six general surgical patients aged 18–70 years of age belonging to the American Society of Anaesthesiologists (ASA) I and II posted for upper abdominal laparoscopic surgeries were randomly allocated to two groups. Group A patients were ventilated with volume-controlled 1:1 ventilation whereas Group B patients were ventilated with 1:2 ratio ventilation. Intraoperatively, parameters of respiratory mechanics that included peak airway pressure, mean airway pressure, end-tidal carbon dioxide, and hemodynamics (MAP and heart rate) were recorded. The parameters measured were compared between the two groups using repeated measures ANOVA. Results: There were no significant differences in peak airway and MAPs recorded between the two groups (P = 0.82 and P = 0.51, respectively). The hemodynamic parameters, saturation, and end-tidal carbon dioxide measurements also remained similar between the two groups. Conclusion: Volume-controlled equal ratio ventilation was found to be similar to conventional ratio ventilation in terms of parameters of respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries.https://journals.lww.com/10.4103/jcrsm.jcrsm_131_23equal ratio ventilationlaparoscopic surgeriespneumoperitoneumrespiratory mechanics |
| spellingShingle | Prathap Gunasekaran Ramyavel Thangavelu Sivakumar Segaran Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial Journal of Current Research in Scientific Medicine equal ratio ventilation laparoscopic surgeries pneumoperitoneum respiratory mechanics |
| title | Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial |
| title_full | Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial |
| title_fullStr | Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial |
| title_full_unstemmed | Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial |
| title_short | Comparison of effects of volume-controlled equal inspiratory-to-expiratory ratio (1:1) ventilation with conventional ratio (1:2) ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries: A randomized clinical trial |
| title_sort | comparison of effects of volume controlled equal inspiratory to expiratory ratio 1 1 ventilation with conventional ratio 1 2 ventilation on respiratory mechanics and hemodynamics in patients undergoing upper abdominal laparoscopic surgeries a randomized clinical trial |
| topic | equal ratio ventilation laparoscopic surgeries pneumoperitoneum respiratory mechanics |
| url | https://journals.lww.com/10.4103/jcrsm.jcrsm_131_23 |
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