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Fig. 3 | BMC Anesthesiology

Fig. 3

From: Supraglottic jet oxygenation and ventilation for obese patients under intravenous anesthesia during hysteroscopy: a randomized controlled clinical trial

Fig. 3

Two-Diameter Method was carried out to measure antral CSA by ultrasound before and after SJOV in the WNJ SJOV group. GA = Gastric antrum, Ao = aorta, Sma = superior mesenteric artery, L = liver. The antero-posterior (AP) antral diameter was expressed as dotted line 1,The cranio-caudal (CC) antral diameter was represented by dotted line 2,and π was 3.1416 during CSA = (AP × CC × π)/4

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BMC Anesthesiology

ISSN: 1471-2253

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