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Femoral Vein Collapsibility Index and Post-Spinal Hypotension in Pregnant Women: Impact of Position
Sponsor: Mehmet Sarı
Summary
This study aims to improve the safety of spinal anesthesia for pregnant patients undergoing elective cesarean delivery. Specifically, the investigators are investigating whether ultrasound measurements of a vein in the groin (the right common femoral vein, or RCFV) can help predict the risk of low blood pressure (hypotension) after spinal anesthesia. The main question it aims to answer is: Can femoral vena cava collapsibility index predict post-spinal hypotension in pregnant women in left lateral tilt position? Before receiving spinal anesthesia, participants will undergo a brief and painless ultrasound examination of the RCFV in the groin area while lying in a specific position."
Official title: "Can Femoral Vena Cava Collapsibility Index Predict Post-spinal Hypotension in Pregnant Women in Left Lateral Tilt Position?"
Key Details
Gender
FEMALE
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
100
Start Date
2025-05-01
Completion Date
2026-08-31
Last Updated
2025-03-20
Healthy Volunteers
No
Interventions
Supine Position
All ultrasonography (USG) procedures will be performed by the same anesthesiologist using a Ultrasound device before the start of spinal anesthesia (SA) and after baseline blood pressure and heart rate have been measured. Patients will be placed in supine and left lateral tilt (LLT) positions. After at least 3 minutes in each position, ultrasound of the inferior vena cava (IVC) and femoral vein (FV) will be performed. The oblique probe will be placed below the xiphoid. Anteroposterior diameters and peak velocities of the IVC will be measured 2-3 cm below the IVC-right atrium For standardization purposes, measurements of the right femoral vein will be used in the study. The FV will be visualized with B-mode ultrasound 2-5 cm below the level of the inguinal ligament where the femoral artery is best palpated, without applying any pressure that may affect the FV diameter.
Supine Position
All ultrasonography (USG) procedures will be performed by the same anesthesiologist using a Ultrasound device before the start of spinal anesthesia (SA) and after baseline blood pressure and heart rate have been measured. Patients will be placed in supine position. After at least 3 minutes in each position, ultrasound of the inferior vena cava (IVC) and femoral vein (FV) will be performed. The oblique probe will be placed below the xiphoid. Anteroposterior diameters and peak velocities of the IVC will be measured 2-3 cm below the IVC-right atrium For standardization purposes, measurements of the right femoral vein will be used in the study. The FV will be visualized with B-mode ultrasound 2-5 cm below the level of the inguinal ligament where the femoral artery is best palpated, without applying any pressure that may affect the FV diameter.
Left Lateral Tilt Position
All ultrasonography (USG) procedures will be performed by the same anesthesiologist using a Ultrasound device before the start of spinal anesthesia (SA) and after baseline blood pressure and heart rate have been measured. Patients will be placed in left lateral tilt (LLT) position. After at least 3 minutes in each position, ultrasound of the inferior vena cava (IVC) and femoral vein (FV) will be performed. The oblique probe will be placed below the xiphoid. Anteroposterior diameters and peak velocities of the IVC will be measured 2-3 cm below the IVC-right atrium For standardization purposes, measurements of the right femoral vein will be used in the study. The FV will be visualized with B-mode ultrasound 2-5 cm below the level of the inguinal ligament where the femoral artery is best palpated, without applying any pressure that may affect the FV diameter.
Locations (1)
Bezmialem Vakıf Univeristesi Dragos Hastanesi Yalı, Kennedy Cd. No:16.
Istanbul, Turkey (Türkiye)