ArticleIndian journal of anaesthesia2022
Assessment of the effect of two different doses of intranasal nitroglycerine spray on attenuation of haemodynamic stress response to pneumoperitoneum in laparoscopic surgeries: A randomised, double-blinded study.
Article in Indian journal of anaesthesia, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and Aims: The stress response to pneumoperitoneum can be deleterious due to its effects on haemodynamics, thereby increasing the morbidity. We intended to compare different doses of nitroglycerine nasal spray to obtund these responses and to look for any side effects. Methods: After ethical committee clearance and clinical trials registration, 70 patients scheduled for laparoscopic cholecystectomy were recruited. Random allocation was done into two groups by a computer generated randomisation table. Group N4 (n = 35) received 400 μg nitroglycerine and group N8 (n = 35) received 800 μg nitroglycerine with an intranasal spray 2 min prior to pneumoperitoneum. All the haemodynamic parameters were monitored at regular intervals. Results: The heart rate was comparable between the groups except at 6 and 10 min of pneumoperitoneum but showed significant increase from baseline within the groups. Mean arterial pressure (MAP) was statistically significant between the groups, being higher in group N4. Within group N4, MAP was significantly low only at 2 min, 4 min of pneumoperitoneum (101.69 ± 12.34 at baseline versus 93.31 ± 8.07 at 2 min and 97.54 ± 9.07 mm Hg at 4 min) and increased significantly at 30 min of pneumoperitoneum (101.69 ± 12.34 at baseline versus 105.66 ± 12.35 mm Hg) and hence, MAP was observed to be around baseline throughout the rest of intraoperative period. Within group N8, there was a significant decrease in mean, systolic and diastolic blood pressure from baseline at most of the time intervals. Conclusion: 800 μg of intranasal nitroglycerine effectively obtunds the hypertensive response associated with pneumoperitoneum as compared to 400 μg without significant side effects.
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