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Completed

NCT Number: NCT05239234

Ultrasonographic Predictors of Hypotension After Induction

The purpose of the study is to evaluate the predictive value of the inferior vena cava collapsibility index and caval aorta index for detecting hypotension after induction of general anesthesia.

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Key information

Conditions

General Anesthesia Hypotension on Induction

Age range

18 year–75 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Antalya Training and Researching Hospital

Antalya, Turkey (Türkiye)

About this study

Since cardiovascular depressant and vasodilatory effects of anesthetic agents, patients may be at risk of hypotension after induction of general anesthesia. Previous studies reported that, for evaluating volume status, some ultrasonographic measurements such as inferior vena cava collapsibility index (IVCCI) could be used. Also some studies stated that measurement of aorta diameter index (IVC : Ao index) is reliable to predict hypotension after induction of spinal anesthesia. At the study, the investigators aimed to investigate the predictive values of the inferior vena cava collapsibility index and caval aorta index under ultrasound guidance in predicting post-induction hypotension in patients under general anesthesia.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • patients more than 18 years of age
  • American Society of Anesthesiologists' (ASA) physical status 1 or 2

Exclusion criteria

  • BMI more than 30 kg/m²
  • Use of angiotensin converting enzyme inhibitors
  • pregnancy,
  • emergency operations
  • baseline arterial systolic blood pressure less than 90 mmHg
  • mean arterial blood pressure less than 70 mmHg

Treatment and study plan

Inferior vena cava-Aorta diameter index

Other

Before the induction of general anesthesia, inferior vena cava-Aorta diameter index and inferior vena cava collapsibility index will be measured.

Other names: Inferior vena cava collapsibility index

Primary outcomes

  1. Diagnostic value of IVCCI to detect post-induction hypotension assessed by Receiver operating characteristic (ROC) curve analysis.

    Time frame: 20 minutes

    Measurement of inferior vena cava collapsibility index.

  2. Diagnostic value of IVC : Ao index to detect post-induction hypotension assessed by ROC curve analysis.

    Time frame: 20 minutes

    Measurement of inferior vena cava-Aorta diameter index.

Sponsors and collaborators

Lead sponsor

Antalya Training and Research Hospital

Other Gov

Registry information

Official study title

Pre-operative Ultrasonographic Evaluation of Inferior Vena Cava Collapsibility Index and Caval Aorta Index to Predict Hypotension After Induction of General Anesthesia

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Feb 14, 2022
Registry last updated
Nov 28, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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