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ORIGINAL ARTICLE
Year : 2019  |  Volume : 3  |  Issue : 3  |  Page : 675-680

Gastric ultrasound assessment of non-laboring third trimester pregnant women and non-pregnant women


1 Department of Anesthesia and Intensive Care, Al-Azhar Faculty of Medicine for Boys, Cairo, Egypt
2 Department of Radiodiagnosis, Al-Azhar Faculty of Medicine for Boys, Cairo, Egypt

Correspondence Address:
Mofeed A Abdelmaboud
Assistant Professor of Anesthesia and Intensive Care Al-Azhar Faculty of Medicine for Boys, Cairo, Egypt; Department of Anesthesia and Intensive Care Al-Azhar Faculty of Medicine for Boys, El-Shiekh El-Shami street Squil Ausim Giza, Cairo, 12992
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/sjamf.sjamf_81_19

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Background Qualitative and quantitative gastric ultrasound (US) assessment is a non-invasive method used successfully in both surgical patients and healthy volunteers. Aim The primary outcome was to evaluate gastric content by US after fasting in both pregnant and non-pregnant women and to determine if there was difference in the aspiration risk between them. The secondary outcome is to determine whether US can be used for rapid assessment of gastric volume and risk of aspiration. Patients and methods Fasted 135 non-laboring third trimester pregnant women (group P) and 135 non-pregnant women (group NP) fulfilling inclusion criteria were recruited in this study. Qualitative gastric US assessment was done for each patients in both groups after following fasting guideline. Patients showing grade 0 in both groups were further subdivided into three subgroups to drink either 100, 200, or 400 ml of water, then a second quantitative US assessment of antral cross-sectional area (CSA) (cm2) was done 2 min after drinking the water. Results Regarding qualitative Arzola’s antral grading, grade 0 was significantly predominant in group NP (64.4 vs 51.1%), whereas grade 2 and solid content were predominant in group P (16.6 vs 3.7% and 8.1 vs 1.5%, respectively), but grade 1 was comparable between the two groups. With respect to CSA (cm2), it was significantly larger in group P than group NP with all volumes of water taken. There was a linear relationship between CSA and volumes of water taken in both groups. Conclusion First, fasted pregnant patients were at more risk of aspiration as it showed more significant number of patients with grade 2 and solid contents but with less significant number of patients with grade 0 as compared with non-pregnant patients. Second, there was a linear relationship between CSA (cm2) and gastric fluid volume, so US can be used to assess preoperative gastric volume and risk of aspiration.


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