Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
60 participants
OBSERVATIONAL
2021-02-22
2023-11-29
Brief Summary
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Detailed Description
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Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Donor hepatectomy
Live donors undergoing hepatectomy
Placement of a central venous catheter
The right internal jugular vein is located at the first rib level under ultrasound-guidance. Using an out-of-plane technique, a needle is introduced into the lumen of the vessel. The aspiration of blood into the syringe connected to the hub of the needle confirms the placement of the needle tip in the lumen. After the syringe is detached from the needle, a guidewire is advanced into the vessel lumen through the needle. A dilator is introduced over the guidewire and subsequently is removed. Then, a central venous catheter is introduced over the guidewire into the vessel lumen through the pathway expanded by the dilator. The catheter tip is placed in the superior vena cava by inserting the catheter as far as the distance between the edge of the right transverse process of the first thoracic vertebra and the carina, which is preoperatively measured on a posteroanterior chest radiograph.
Monitoring of central venous pressure
Following the placement of a central venous catheter, a fluid-filled system for monitoring central venous pressure is connected to the proximal lumen of the catheter. The reference transducer is placed at the level of 4/5 of the anteroposterior diameter of the thorax.
Furosemide-induced hypovolemia before graft procurement
Patients fast from 10 pm the day before surgery. On the arrival at the operating room, an intravenous catheter for Plasmalyte infusion is placed into the right cephalic or basilic vein. The distal lumen of the central venous catheter is used for the infusion of 6% hydroxyethyl starch. Fluid requirements due to anesthesia, surgery, and no per os intake are not replaced by minimizing the administration of the fluids. Five minutes after the collection of the baseline data, 20 mg of furosemide is administered to promote diuresis for facilitating the venous outflow of the liver. An additional dose of furosemide 20 mg is given if the urine output is \<1 ml/kg within 30 minutes after the first dose. Unless the second dose of furosemide produces \>1 ml/kg of urine within 30 minutes, 40 mg of furosemide is administered. In the absence of effective diuresis (1 ml/kg within 30 minutes after each dose), the use of furosemide is abandoned and the patients are excluded from the study.
Replacement of fluid loss after graft procurement
Immediately after the graft procurement, 500 ml of 6% hydroxyethyl starch are infused over 25 minutes. Afterward, Plasmalyte is infused at a rate of 10 ml/min until the end of surgery.
Monitoring of stroke volume variation
Following anesthesia induction, the right radial artery is catheterized. The catheter is connected to the EV1000 monitor (Edwards Lifesciences, Irvine, CA) through the FloTrac transducer (Edwards Lifesciences). The transducer is level with the one for central venous pressure monitoring. Using pulse contour analysis without external calibration, the stroke volume for each heartbeat is measured. At a 20-second interval, stroke volume variation is calculated as (maximum stroke volume - minimum stroke volume)/mean stroke volume.
Interventions
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Placement of a central venous catheter
The right internal jugular vein is located at the first rib level under ultrasound-guidance. Using an out-of-plane technique, a needle is introduced into the lumen of the vessel. The aspiration of blood into the syringe connected to the hub of the needle confirms the placement of the needle tip in the lumen. After the syringe is detached from the needle, a guidewire is advanced into the vessel lumen through the needle. A dilator is introduced over the guidewire and subsequently is removed. Then, a central venous catheter is introduced over the guidewire into the vessel lumen through the pathway expanded by the dilator. The catheter tip is placed in the superior vena cava by inserting the catheter as far as the distance between the edge of the right transverse process of the first thoracic vertebra and the carina, which is preoperatively measured on a posteroanterior chest radiograph.
Monitoring of central venous pressure
Following the placement of a central venous catheter, a fluid-filled system for monitoring central venous pressure is connected to the proximal lumen of the catheter. The reference transducer is placed at the level of 4/5 of the anteroposterior diameter of the thorax.
Furosemide-induced hypovolemia before graft procurement
Patients fast from 10 pm the day before surgery. On the arrival at the operating room, an intravenous catheter for Plasmalyte infusion is placed into the right cephalic or basilic vein. The distal lumen of the central venous catheter is used for the infusion of 6% hydroxyethyl starch. Fluid requirements due to anesthesia, surgery, and no per os intake are not replaced by minimizing the administration of the fluids. Five minutes after the collection of the baseline data, 20 mg of furosemide is administered to promote diuresis for facilitating the venous outflow of the liver. An additional dose of furosemide 20 mg is given if the urine output is \<1 ml/kg within 30 minutes after the first dose. Unless the second dose of furosemide produces \>1 ml/kg of urine within 30 minutes, 40 mg of furosemide is administered. In the absence of effective diuresis (1 ml/kg within 30 minutes after each dose), the use of furosemide is abandoned and the patients are excluded from the study.
Replacement of fluid loss after graft procurement
Immediately after the graft procurement, 500 ml of 6% hydroxyethyl starch are infused over 25 minutes. Afterward, Plasmalyte is infused at a rate of 10 ml/min until the end of surgery.
Monitoring of stroke volume variation
Following anesthesia induction, the right radial artery is catheterized. The catheter is connected to the EV1000 monitor (Edwards Lifesciences, Irvine, CA) through the FloTrac transducer (Edwards Lifesciences). The transducer is level with the one for central venous pressure monitoring. Using pulse contour analysis without external calibration, the stroke volume for each heartbeat is measured. At a 20-second interval, stroke volume variation is calculated as (maximum stroke volume - minimum stroke volume)/mean stroke volume.
Eligibility Criteria
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Inclusion Criteria
* Scheduled for donor hepatectomy under general anesthesia
Exclusion Criteria
* Valvular heart disease
* Coronary artery disease
* Cerebrovascular disease
* Hypertension
* Diabetes mellitus
* Renal insufficiency
* Pulmonary problems
* Any type of liver disease
* Body mass index greater than 35 kg/m2
* Human immunodeficiency virus infection
* Psychosocial problems
* Electrolyte imbalance
* Reoperation
20 Years
60 Years
ALL
No
Sponsors
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JongHae Kim
OTHER
Responsible Party
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JongHae Kim
Professor
Principal Investigators
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Jonghae Kim, M.D.
Role: PRINCIPAL_INVESTIGATOR
Daegu Catholic University Medical Center
Locations
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Daegu Catholic University Medical Center
Daegu, , South Korea
Countries
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References
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Alian AA, Galante NJ, Stachenfeld NS, Silverman DG, Shelley KH. Impact of lower body negative pressure induced hypovolemia on peripheral venous pressure waveform parameters in healthy volunteers. Physiol Meas. 2014 Jul;35(7):1509-20. doi: 10.1088/0967-3334/35/7/1509. Epub 2014 Jun 5.
Hocking KM, Sileshi B, Baudenbacher FJ, Boyer RB, Kohorst KL, Brophy CM, Eagle SS. Peripheral Venous Waveform Analysis for Detecting Hemorrhage and Iatrogenic Volume Overload in a Porcine Model. Shock. 2016 Oct;46(4):447-52. doi: 10.1097/SHK.0000000000000615.
Hocking KM, Alvis BD, Baudenbacher F, Boyer R, Brophy CM, Beer I, Eagle S. Peripheral i.v. analysis (PIVA) of venous waveforms for volume assessment in patients undergoing haemodialysis. Br J Anaesth. 2017 Dec 1;119(6):1135-1140. doi: 10.1093/bja/aex271.
Sileshi B, Hocking KM, Boyer RB, Baudenbacher FJ, Kohurst KL, Brophy CM, Eagle S. Peripheral venous waveform analysis for detecting early hemorrhage: a pilot study. Intensive Care Med. 2015 Jun;41(6):1147-8. doi: 10.1007/s00134-015-3787-0. Epub 2015 Apr 11. No abstract available.
Other Identifiers
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CR-21-007
Identifier Type: -
Identifier Source: org_study_id