Internal Jugular Vein Ultrasound for Predicting Hypotension in Geriatric Patients Undergoing Spinal Anesthesia (IJV-SPINAL)

February 11, 2026 updated by: Aylin Nil GÜLTEKİN, Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital

The Role of Internal Jugular Vein Ultrasonography in Predicting Hypotension in Geriatric Patients Undergoing Spinal Anesthesia: A Prospective Observational Study (Protocol ID: 2023-12/509)

Spinal anesthesia-induced hypotension is a common and clinically significant complication in geriatric patients. Accurate preoperative assessment of intravascular volume status may help identify patients at risk. Internal jugular vein (IJV) ultrasonography is a noninvasive and easily applicable bedside method that reflects venous volume status. This prospective observational study aims to evaluate the role of preoperative IJV ultrasonographic measurements in predicting hypotension following spinal anesthesia in geriatric patients. Patients aged 65 years and older undergoing elective surgery under spinal anesthesia will be included. Preoperative IJV diameter, cross-sectional area, and collapsibility index will be measured using ultrasonography. Hemodynamic parameters will be monitored intraoperatively, and the occurrence of hypotension after spinal anesthesia will be recorded. The predictive value of IJV ultrasonographic parameters for post-spinal hypotension will be analyzed

Study Overview

Status

Status

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Recruiting

Conditions

Conditions

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Intervention / Treatment

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Detailed Description

Spinal anesthesia is widely used in geriatric patients; however, hypotension following spinal anesthesia remains a frequent and clinically relevant complication in this population. Age-related physiological changes and reduced cardiovascular reserve increase susceptibility to hemodynamic instability. Therefore, identifying patients at risk of hypotension before spinal anesthesia is of clinical importance.

Assessment of intravascular volume status may contribute to predicting post-spinal hypotension. Ultrasonographic evaluation of the internal jugular vein (IJV) provides a noninvasive, bedside method reflecting venous filling and volume status. Parameters such as IJV diameter, cross-sectional area, and collapsibility index have been proposed as potential predictors of hypotension.

This prospective observational study will include patients aged 65 years and older undergoing elective surgery under spinal anesthesia. Preoperative ultrasonographic measurements of the IJV will be performed in the supine position prior to spinal anesthesia. Hemodynamic parameters, including systolic and diastolic blood pressure and heart rate, will be recorded before and after spinal anesthesia. Hypotension will be defined according to predefined criteria and documented during the intraoperative period.

The primary objective of the study is to evaluate the predictive value of preoperative IJV ultrasonographic measurements for hypotension following spinal anesthesia in geriatric patients.

Study Type

Study Type

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Observational

Enrollment (Estimated)

Enrollment

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85

Contacts and Locations

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Study Contact

Study Contact

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Study Contact Backup

  • Name: Guldeniz ARGUN, phD
  • Phone Number: +90 3123360909 +90 533 623 0405
  • Email: guldargun@yahoo.com

Study Locations

  • Turkey (Türkiye)
    • YENİMAHALLE
      • Ankara, YENİMAHALLE, Turkey (Türkiye), 06200
        • Recruiting
        • Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital
        • Contact:

Participation Criteria

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Eligibility Criteria

Eligibility Criteria

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Ages Eligible for Study

  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

This study will include geriatric patients aged 65 years and older, classified as ASA I-III, scheduled for surgery under spinal anesthesia, and able to provide written informed consent. Patients with severe cardiac dysfunction, extreme obesity, or hemodynamic instability will be excluded.

Description

Inclusion Criteria:

  • Age ≥65 years
  • Scheduled to undergo surgery under spinal anesthesia
  • American Society of Anesthesiologists (ASA) physical status I-III
  • Able and willing to provide written informed consent

Exclusion Criteria:

  • Did not provide written informed consent
  • Undergoing emergency surgery
  • Body mass index (BMI) ≥40 kg/m²
  • Receiving angiotensin-converting enzyme (ACE) inhibitors
  • Pre-spinal systolic blood pressure <90 mmHg or mean arterial pressure <70 mmHg
  • Unable to tolerate the supine position
  • Left ventricular ejection fraction <40%
  • Requiring sedoanalgesia in addition to spinal anesthesia or conversion to general anesthesia

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

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Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Hypotension Group
Geriatric patients who developed hypotension after spinal anesthesia.
Other: Not applicable- observational study
Not applicable- observational study
Non-Hypotension Group
Geriatric patients who did not develop hypotension after spinal anesthesia
Other: Not applicable- observational study
Not applicable- observational study

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Post-spinal hypotension
Time Frame: From spinal anesthesia administration up to 90 minutes intraoperatively.
Post-spinal hypotension was defined as a decrease of more than 20% in systolic blood pressure or mean arterial pressure from baseline, or an absolute mean arterial pressure <65 mmHg following spinal anesthesia. During the operation, systolic, diastolic, and mean arterial blood pressures and heart rate were recorded immediately after spinal anesthesia (0 minute), at 3-minute intervals during the first 15 minutes, at 15-minute intervals between 15 and 60 minutes, and at 90 minutes intraoperatively. For surgeries lasting less than 90 minutes, measurements were recorded until the end of surgery.
From spinal anesthesia administration up to 90 minutes intraoperatively.

Collaborators and Investigators

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Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital

Publications and helpful links

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General Publications

Study record dates

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Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 3, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 6, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 10, 2026

Study Registration Dates

First Submitted

First Submitted

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February 5, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 11, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 13, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 11, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2023-12/509

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Individual participant data (IPD) from this study will not be shared. No additional data beyond what is published in the study results will be made available.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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