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Background and AimsObesity is associated with increase risk of aspiration in pregnant patients. There are no separate fasting guidelines for obese-pregnant women. The aim of our study was to evaluate gastric emptying in obese and non-obese full term pregnant women after standersied meal using USG by measuring antral cross-sectional area(ACSA) at 15 and 90 minutes, half time to gastric emptying, gastric emptying fraction 15–90 minutes and empty stomach at 90 and 120 minutes.MethodsThe study was conducted after taking review board approval and Institutional Ethics Committee approval. The patients were divided into three groups- TO: Term obese pregnant women, NO: Term non-obese pregnant women and NP: Non- pregnant women. After baseline measurement of ACSA, serial ultrasound was performed till 120 minutes to assess gastric emptying.ResultsThe mean ACSA was insignificant at 15 minutes. The ACSA at 90 minutes was found to be statistically significant between the three group with p value of 0.000. The group TO had ACSA- 396.15 mm2 (308.19- 513.54 mm2), in group NO was 228.80 mm2(188.79- 307.56 mm2) and in group NP was 227.73 mm2 (165.00- 331.88 mm2). The t1/2 was statistically significant between the three groups with p value 0.000. The group TO had t1/2 of 73.07 minutes (IQR 65.21- 84.69), group NO had t1/2 of 56.79 minutes (IQR 49.7468.48) and group NP had t1/2 of 48.73 minutes (IQR 37.28- 53.71). Gastric emptying fraction from 15–90 minutes was Group TO had emptying fraction of 33.61%(IQR 40.99- 4.46), group NO had 45.24% (IQR 57.35- 41.55) and group NP had 56.88% (IQR 62.50- 48.45). 5 women in the group TO had contents in stomach at 90 minutes which was significant with p value 0.004 at 120 minutes empty stomach was insignificant in three groups.ConclusionsObese pregnant women had larger ACSA and delayed gastric emptying, which may require separate fasting guidelines

Glenn shunt is an anastomosis between superior vena cava and right pulmonary artery to palliate patients with single ventricle physiology of the heart. Chylothorax is a frequent and troublesome complication after the creation of this shunt, which if not controlled with medical management, might require pleurodesis, and thoracic duct ligation. Video-assisted thoracoscopic surgery (VATS) causes less postoperative pain, earlier mobilization, lower overall morbidity, a shortened hospital stay with reduced cost, and a cosmetic incision. A comprehensive understanding of physiology of Glenn shunt and implications of the proposed surgical procedure (VATS) is necessary to plan the anesthetic agents, cardiovascular drugs, ventilation strategies, and other perioperative factors.