Normal Vascular Doppler Pattern of Abdominal Organ in Children

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05290168

Enrollment

100

Registered

2022-03-22

Start date

2022-03-28

Completion date

2022-12-30

Last updated

2022-05-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Normal Children

Brief summary

The following ultrasonic findings are obtained at both time points before and after induction of anesthesia (T1) and after induction (T2) in normal children . Positive pressure ventilation (Tidal volume of 6-8 ml/kg and a positive exhalation pressure of 5 cmH2O) is applied after anesthetic induction. 1. Inferior vena cava diameter and distensibility 2. Hepatic vein Doppler 3. Portal vein Doppler 4. Splenic artery and vein Doppler 5. Renal artery and vein Doppler Based on this, the reference values for Doppler findings before and after anesthesia in normal children are obtained.

Interventions

DIAGNOSTIC_TESTabdominal Doppler

1. Inferior vena cava diameter and distensibility 2. Hepatic vein Doppler 3. Portal vein Doppler 4. Splenic artery and vein Doppler 5. Renal artery and vein Doppler

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

DIAGNOSTIC

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

No minimum to 18 Years

Healthy volunteers

Inclusion criteria

* Children undergoing simple surgery

Exclusion criteria

* thoracic/abdominal surgery * surgery for congenital heart disease * disease involving liver, kidney, spleen * vascular disease

Design outcomes

Primary

Measure	Time frame
portal vein flow velocity (cm/s) during self respiration	just before anesthesia induction (about 5 minutes before anesthetic induction)
portal vein flow velocity (cm/s) during general anesthesia	during positive pressure ventilation (within 5 - 60 minutes after anesthetic induction)
splenic vein flow velocity (cm/s) during self respiration	just before anesthesia induction (about 5 minutes before anesthetic induction)
inferior vena cava diameter (mm) during self respiration	just before anesthesia induction (about 5 minutes before anesthetic induction)
inferior vena cava diameter (mm) during general anesthesia	during positive pressure ventilation (within 5 - 60 minutes after anesthetic induction)
hepatic vein flow velocity (cm/s) during self respiration	just before anesthesia induction (about 5 minutes before anesthetic induction)
hepatic vein flow velocity (cm/s) during general anesthesia	during positive pressure ventilation (within 5 - 60 minutes after anesthetic induction)
renal artery/vein flow velocities (cm/s) during self respiration	just before anesthesia induction (about 5 minutes before anesthetic induction)
renal artery/vein flow velocities (cm/s) during general anesthesia	during positive pressure ventilation (within 5 - 60 minutes after anesthetic induction)

Countries

South Korea

Contacts

Primary ContactJin-Tae Kim

jintae73@gmail.com82-2-2072-3661

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026