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The investigators will evaluate the change of the common carotid artery blood flow according to patient's position and penumoperitoneum.
The study will include 20 patients undergoing gynecological surgery. The common carotid artery blood flow will be measured using Doppler US during the following conditions; supine position before induction of anesthesia, supine position immediately after induction of anesthesia, supine position with penumoperitoneum, head-down position with or without pneumoperitoneum.
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| Measure | Description | Time Frame |
|---|---|---|
| Change of the common carotid artery blood flow velocity | Common carotid artery blood flow velocity is measured using Doppler US | 1) baseline, 2) Immediately after induction of anesthesia, 3) immediately after pneumoperitoneum, 4) immediately after Trendelenburg position with penumoperitoneum, 5) Immediately after desufflation in Trendelenburg position |
| Measure | Description | Time Frame |
|---|---|---|
| Change of the common carotid artery beat volume | Common carotid artery beat volume was calculated from median common carotid artery beat velocity and vessel diameter | 1) baseline, 2) Immediately after induction of anesthesia, 3) immediately after pneumoperitoneum, 4) immediately after Trendelenburg position with penumoperitoneum, 5) Immediately after desufflation in Trendelenburg position |
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Inclusion Criteria:
Exclusion Criteria:
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patients undergoing gynecology surgery under trendelenburg position
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| Name | Affiliation | Role |
|---|---|---|
| Jin-Tae Kim, PhD | Seoul National University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Jin-Tae Kim | Seoul | South Korea |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 36463542 | Derived | Yoon HK, Bae H, Yoo S, Kim YW, Bae J, Park SK, Kim H, Lim YJ, Kim JT. Relationships between common carotid artery blood flow and anesthesia, pneumoperitoneum, and head-down tilt position: a linear mixed-effect analysis. J Clin Monit Comput. 2023 Apr;37(2):669-677. doi: 10.1007/s10877-022-00940-z. Epub 2022 Dec 4. |
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| ID | Term |
|---|---|
| D011183 | Postoperative Complications |
| D011027 | Pneumoperitoneum |
| ID | Term |
|---|---|
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D010532 | Peritoneal Diseases |
| D004066 | Digestive System Diseases |
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| Change of the common carotid artery diameter | Common carotid artery diameter is obtained using US | 1) baseline, 2) Immediately after induction of anesthesia, 3) immediately after pneumoperitoneum, 4) immediately after Trendelenburg position with penumoperitoneum, 5) Immediately after desufflation in Trendelenburg position |
| Change of mean arterial blood pressure | Mean arterial pressure is obtained concurrently with common carotid artery blood flow velocity measurements | 1) baseline, 2) Immediately after induction of anesthesia, 3) immediately after pneumoperitoneum, 4) immediately after Trendelenburg position with penumoperitoneum, 5) Immediately after desufflation in Trendelenburg position |
| Change of cardiac output | Cardiac output was obtained using FloTrac(EdwardLifescience, USA) | 1) baseline, 2) Immediately after induction of anesthesia, 3) immediately after pneumoperitoneum, 4) immediately after Trendelenburg position with penumoperitoneum, 5) Immediately after desufflation in Trendelenburg position |
| Change of peak inspiration airway pressure | Peak inspiratory airway pressure is obtained using the ventilator system | 1) baseline, 2) Immediately after induction of anesthesia, 3) immediately after pneumoperitoneum, 4) immediately after Trendelenburg position with penumoperitoneum, 5) Immediately after desufflation in Trendelenburg position |