Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Increased intra-abdominal pressure(IAP) might influence on perioperative morbidity related to increased CVP, PVWP, SVR, PAP and decreased venous return and cardiac output. Prone position has been known to increase IAP. In clinical field, various apparatuses has developed to minimize IAP elevation during prone position operation.
In this study, we would compare the changes of IAP and respiratory system compliance according to positional apparatus in prone position.
In clinical field, Wison frame, chest rolls and Jackson table have been widely used for prone position surgery. Among those apparatus, Jackson table has padded supports under the chest and pelvis, so that the abdomen can hang freely and prevent the abdominal compression. By reducing abdominal and thoracic pressure, Jackson table would reduce blood loss, and less effects on pulmonary mechanics. But few studies has known to compare IAP with other positioning apparatus such as Wilson frame or chest roll.
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group C | Active Comparator | Group C means active comparator group which use chest rolls intraoperatively for prone position. |
|
| Group W | Active Comparator | Group W means experimental group which use Wilson frame intraoperatively for prone position. |
|
| Group J | Experimental | Group J means experimental group which use Jackson surgical table intraoperatively for prone position. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Jackson surgical table | Device | After standard total intravenous anesthesia using propofol and remifentanil continous infusion, patients were turned to the prone position on a Jackson table with two padded supports on each side. The supports were positioned under the lateral chest and at the iliac crest. |
| Measure | Description | Time Frame |
|---|---|---|
| changes of Intraabdominal presure (IAP) | Compare IAP changes from supine to prone according to the positional apparatus : Wilson frame, Chestrolls and Jackson table | 5 minute after position change |
| Measure | Description | Time Frame |
|---|---|---|
| Changes of IAP and total respiratory system comliance (Crs) accoridng to PEEP change | Compare IAP and Crs according to PEEP changes in each group. PEEP applied 0,3,6 and 9 cm H2O and recoding was done at 1min after PEEP change. Total respiratory system compliance (Crs) = TV/(Pplat-PEEP) | 1min after PEEP change |
| Measure | Description | Time Frame |
|---|---|---|
| Estimated blood loss (EBL) | Compare the EBL among the groups. | intraoperatively |
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Hee Pyung Park, MD Phd | Contact | 82-2-2072-2466 | hppark@snu.ac.kr | |
| Eugene Kim, MD | Contact | 82-2-2072-3108 | tomomie@hanmail.net |
| Name | Affiliation | Role |
|---|---|---|
| Hee Pyung Park, MD PhD | Professor | Study Director |
| Eugene Kim, MD | Clinical Instuctor | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul National University of Hospital | Recruiting | Seoul | 110-799 | South Korea |
| Type | Date | Date Unknown |
|---|---|---|
| Release | Apr 21, 2016 | |
| Reset | May 27, 2016 |
Not provided
Not provided
| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Apr 21, 2016 | May 27, 2016 |
Not provided
Not provided
Not provided
Not provided
Not provided
|
| Wilson frame | Device | After standard total intravenous anesthesia using propofol and remifentanil continous infusion, patients were turned to the prone position on a Wilson frame. The supports were positioned vertically from shoulder to iliac crest. |
|
| Chest roll | Device | After standard total intravenous anesthesia using propofol and remifentanil continous infusion, patients were turned to the prone position on a chest roll. The supports were positioned vertically from shoulder to iliac crest. |
|
| changes of dead space ventilation after position change |
After genearal anesthetic induction, arterial blood gas analyssis (ABGA)was done at supine position. And then the position was changed to prone. 5minutes after prone position change, ABGA repeated, and calculated the dead space ventilation at each point. Dead space ventilation (Vd/Vt) = [PaCo2-PETCO2]/PaCo2 Finally, we would compare changes of dead space ventilation after position change. |
| 5 minute after prone position |
| Hemodynamic change | Check the hemodynamic changes according to PEEP change : 0,3,6 and 9 cmH2O | 1min after PEEP change |