An observational study in Pre-Eclampsia and Preeclampsia, sponsored by Tanta University. Recruiting at 1 site in Egypt. Open to female participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-10.
Sponsored by Tanta University · Observational
This study aims to assess and analyze volume status in preeclamptic patients and compare these parameters with those of normotensive pregnant ones based on the change in internal jugular vein ultrasound-based indices.
Preeclampsia is a hypertensive disorder of pregnancy that remains a leading cause of maternal and perinatal morbidity and mortality worldwide, particularly in low- and middle-income countries. It is characterized by endothelial dysfunction, increased vascular resistance, and fluid imbalance, all of which complicate perioperative management during cesarean delivery. Accurate assessment of intravascular volume status in these patients is critical for guiding fluid therapy, preventing hypovolemia that worsens uteroplacental perfusion, and avoiding fluid overload, which increases the risk of pulmonary edema - a major cause of maternal mortality in severe preeclampsia.
Traditionally, invasive methods such as central venous pressure (CVP) monitoring and pulmonary artery catheterization have been used to estimate intravascular volume and preload. However, these techniques are associated with significant risks, including infection, thrombosis, and procedural complications, making them unsuitable for routine use in obstetric patients. Non-invasive approaches, such as echocardiography and inferior vena cava (IVC) ultrasound, have been explored but have important limitations in preeclamptic parturients due to altered venous compliance, increased intra-abdominal pressure from gravid uterus, and technical challenges in obtaining consistent IVC windows.
Ultrasound assessment of the internal jugular vein (IJV) has emerged as a simple, rapid, and non-invasive and reproducible bedside technique for evaluating intravascular volume status. The IJV reflects central venous dynamics and can provide real-time information on venous collapsibility without the limitations posed by abdominal compression or operator dependency observed with IVC evaluation.
Importantly, preliminary data from previous study demonstrated that preoperative internal Jugular Vein collapsibility index strongly correlated with fluid status of the pregnant females undergoing cesarean section under spinal anesthesia.
Despite its potential, limited data exist regarding the use of IJV-based indices in preeclamptic parturients, the investigators hypothesize that IJV collapsibility index is a reliable marker of volume status and predictor of post-spinal hypotension in pre-eclamptic parturients , where vascular tone and compliance are significantly altered. This study aims to bridge this gap by assessing the internal jugular vein collapsibility index in pre-eclamptic parturients and comparing it with normotensive pregnant women to determine its clinical utility for optimizing perioperative fluid management.
The investigators hypothesize that this study helps to assess intravascular volume of preeclamptic Parturients to avoid hypovolemia or fluid overload which carry serious risk in this type of patients, both of which carry serious risks in this group of patients.
916 studies on the registry are indexed under Pre-Eclampsia; 243 are open to participants now.
This study's planned enrollment of 80 is below the median of 165 across 397 observational studies indexed under Pre-Eclampsia.
Browse Pre-Eclampsia studies →Tanta University is the lead sponsor of 1,010 studies on the registry; 321 are open to participants now.
Of its 15 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
Counted across the registry records on this site, refreshed daily.
Patients admitted at obstetric theater in Tanta University Hospital
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Preeclamptic Group: new onset preeclamptic pregnant female with gestational hypertension after 20 weeks of pregnancy diagnosed based on ISSHP Guidelines: systolic blood pressure ≥140 mmHg and/or a diastolic blood pressure ≥90 mmHg, accompanied by one or more of the following:
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Parturients diagnosed with preeclampsia diagnosed according to established diagnostic criteria of ISSHP: Pregnant female in the third trimester (after 20 weeks of pregnancy).
Normotensive Parturients matched for gestational age at the time of Ultrasound.
Measuring internal jugular vein (IJV) collapsibility index
Measuring internal jugular vein (IJV) collapsibility index at end expiratory phase just before the induction of anesthesia and its correlation with normotensive parturients to determine the cut off value of fluid status in preeclamptic patient
Time frame: Intra-operative
Association between internal jugular vein ultrasound-based indices and severity of Preeclampsia.
Time frame: Intra-operative
Value of internal Jugular vein collapsibility index in predicting post spinal hypotension
Time frame: Intra-operative
Plan to share: Yes — The data will be available upon a reasonable request from the corresponding author after the end of study for one year
Access criteria: The data will be available upon a reasonable request from the corresponding author
No publications or documents are linked to this record.
Started Oct 2025 (actual). Primary completion is estimated for Sep 2026, 11 months after the start.
Of 191 non-industry observational studies under Pre-Eclampsia, half reached primary completion within 27 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 56. This study's planned 11 months is below that.
Counting every sponsor, half of 200 studies reached it within 30 months; a quarter within 11 and three quarters within 56.
How these figures are worked out, and which studies are left out of them.
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