The performance of the inferior vena cava collapse index(IVC-CI) measured by ultrasound on predicting supine hypotension syndrome(SHS) in parturients following spinal anesthesia

Journal of Diagnostics Concepts & Practice››2020,Vol. 19››Issue (02): 135-138.doi:10.16150/j.1671-2870.2020.02.007

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The performance of the inferior vena cava collapse index(IVC-CI) measured by ultrasound on predicting supine hypotension syndrome(SHS) in parturients following spinal anesthesia

YAO Shifa^1a^,², NIU Jianmei^1a^,²(), XU Tao^1b

1a. Department of Ultrasound, 1b. Department of Anesthesiology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
2. Shanghai Key Laboratory of Embryo Origi-nal Diseases, Shanghai Municipal Key Clinical Specialty, Shanghai 200030, China

Received:2020-01-09Online:2020-04-25Published:2020-04-25
Contact:NIU Jianmei E-mail:niujm5@126.com

Abstract

Abstract:

Objective:To evaluate the performance of the inferior vena cava collapse index(IVC-CI) measured by ultrasound on predicting supine hypotension syndrome (SHS) in parturients following spinal anesthesia.Methods:A total of 102 single-fetus parturients scheduled for cesarean section were prospectively enrolled in the study. The inferior vena cava maximal diameter during quiet expiration (IVCe) and expiration(IVCi) in both supine and left lateral position were measured by ultrasound to calculate IVC-CI and IVC-CI in different position(ΔIVC-CI) sprior to spinal anesthesia. TheΔIVC-CI was deduced to represent the impact of postural change. The parameters including IVCe, IVCi, IVC-CI andΔIVC-CI were compared between parturients with and without SHS.Result:Fifty-four parturients presented SHS after spinal anesthesia. The parturients were predisposed to lower IVCe and IVCi, and higher IVC-CI in supine position than left lateral position(P<0.01). There was no difference in IVCe, IVCi and IVC-C of parturients between with and without SHS in left lateral position(P>0.05). The IVCe and IVCi measured in supine position were lower, and IVC-CI in supine position andΔIVC-CI were higher in parturients with SHS (P<0.01). The areas under ROC curve (AUC) of IVC-CI andΔIVC-CI for prediction of SHS were 0.941 and 0.927. With the cutoff value of 41.43% and 14.09%, the sensitivity and specificity of IVC-CI andΔIVC-CI for predicting SHS in supine position were 88.9% and 98.8%, and 87.0% and 87.5%, respectively.Conclusion:The IVC-CI measured in supine position andΔIVC-CI by ultrasound prior to spinal anesthesia could be used to assess the risk of incidence of SHS.

Key words:Parturients,Spinal anesthesia,Supine hypotension syndrome,Inferior vena cava collapse index

CLC Number:

R730.4

YAO Shifa, NIU Jianmei, XU Tao. The performance of the inferior vena cava collapse index(IVC-CI) measured by ultrasound on predicting supine hypotension syndrome(SHS) in parturients following spinal anesthesia[J]. Journal of Diagnostics Concepts & Practice, 2020, 19(02): 135-138.

Figures/Tables2

组别	例数（n）	平卧位		左侧卧位	ΔIVC-CI
非SHS组	48	13.28±2.26	8.16±1.41	38.58±1.85	14.50±2.25^b)	10.59±1.60^b)	26.92±1.72^b)	11.66±2.21
SHS组	54	12.19±2.18^a)	6.68±1.09^a)	44.97±3.93^a)	14.07±2.18^c),d)	10.26±1.60^c),d)	27.10±2.36^c),d)	17.87±3.73^a)

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