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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Normal children | Experimental | normal children undergoing simple surgery |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| abdominal Doppler | Diagnostic Test |
|
| Measure | Description | 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 |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Jin-Tae Kim | Contact | 82-2-2072-3661 | 82 | jintae73@gmail.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Jin-Tae Kim | Recruiting | Seoul | South Korea |
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| during positive pressure ventilation (within 5 - 60 minutes after anesthetic induction) |