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Effects of respiratory effort on inferior vena cava diameter during spontaneous respiration.

Effects of respiratory effort on inferior vena cava diameter during spontaneous respiration.

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20230808002
Enrollment
60
Registered
2023-08-08
Start date
2022-11-01
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Intubated patients with spontaneous breathing. Inferior vena cava size, ultrasound, intubated patient, spontaneous respiration.

Interventions

IVC sizes are recorded among several ventilation settings including pressure support levels of 0, 5, 10, 15 cmH2O and PEEP of 0, 5, 10 cmH2O.
Other
IVC size

Sponsors

The Faculty of Medicine Chiang Mai University Research Fund
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: Intubated patients with spontaneous breathing age of 18 or greater in the intensive care units of the Faculty of Medicine Chiang Mai University.

Exclusion criteria

Exclusion criteria: 1. Patients who have received neuromuscular blocking agents. 2. Patients who have been diagnosed with pneumothorax or have subcutaneous emphysema. 3. Patients with severe tricuspid regurgitation or cardiac tamponade. 4. Pregnant patients. 5. Patients with increased intra-abdominal pressure (IAP >= 16). 6. Patients who have received vasopressors or inotropic agents. 7. Patients who have undergone open chest surgery.

Design outcomes

Primary

MeasureTime frame
IVC diameter 1 h Ultrasound measurement in centimeters

Secondary

MeasureTime frame
Respiratory effort by negative inspiratory force 1 h cm H2O

Countries

Thailand

Contacts

Public ContactParat Visanumahimachai

Faculty of Medicine Chiang Mai University

pingparat@gmail.com66813663008

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026