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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03586791
Other study ID # DCMC#5
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date July 11, 2018
Est. completion date November 30, 2018

Study information

Verified date October 2019
Source Daegu Catholic University Medical Center
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

In this study, the investigators measure a pupil size every 5 minutes during the operation in patients undergoing laparoscopic cholecystectomy under general anesthesia. The investigators would compare the intraoperative opioid consumption and postoperative pain between the group adjusted the anesthetic drug concentration based on the changes of the pupil (Pupil group) and the group based on the changes of a surgical pleth index (SPI group).


Recruitment information / eligibility

Status Completed
Enrollment 50
Est. completion date November 30, 2018
Est. primary completion date November 29, 2018
Accepts healthy volunteers No
Gender All
Age group 20 Years to 65 Years
Eligibility Inclusion Criteria:

- Patients aged 20 to 65 yr, American Society of Anesthesiologist Physical status(ASA PS) I to II, scheduled for a laparoscopic cholecystectomy under general anesthesia

Exclusion Criteria:

- Presence of ophthalmologic diseases such as Horner's syndrome or Sjogren's disease.

- Presence of neurologic or metabolic diseases

- Medicated that could interfere with the autonomous nervous system (e.g., b- blockers, anticholinergics)

- History of substance abuse or psychiatric disease

- with chronic pain or preoperative analgesics

- with pacemaker or arrhythmia

Study Design


Intervention

Procedure:
Pupillometry guided anesthesia
At least 10 min after anesthesia induction by target-controlled infusion of propofol and remifentanil, baseline values for pupillary diameter is recorded before any surgical procedure. During the operation, propofol effect-site target concentration (Ce) is adjusted to maintain the bispectral index (BIS) value between 40 and 60. Remifentanil Ce is adapted every 5 min based on the changes of pupillary diameter. If the pupillary diameter is increased by more than 30% compared to baseline value, remifentanil concentration is increased by 0.5 ng/ml. If the pupillary diameter is maintained between 5 and 30 % change compared with baseline, remifentanil is not modified. In a case of pupillary diameter is decreased less than 5 % change of baseline, remifentanil concentration is decreased by 0.5 ng/ml.
SPI guided anesthesia
During the operation, SPI value should be maintained between 20 and 50 by changing the infusion rate of remifentanil. Even if the SPI is maintained within the target range, the remifentanil infusion rate is increased by 0.5 ng/ml in a case of the SPI value suddenly arises by more than 10.
Standard management
During the operation, propofol effect-site target concentration (Ce) is adjusted to maintain the bispectral index (BIS) value between 40 and 60. Remifentanil concentration is controlled by the discretion of the anesthesiologist in charge of the patients.

Locations

Country Name City State
Korea, Republic of Eugene Kim Daegu Nam-gu

Sponsors (1)

Lead Sponsor Collaborator
Daegu Catholic University Medical Center

Country where clinical trial is conducted

Korea, Republic of, 

References & Publications (5)

Huybrechts I, Barvais L, Ducart A, Engelman E, Schmartz D, Koch M. Assessment of thoracic epidural analgesia during general anesthesia using pupillary reflex dilation: a preliminary study. J Cardiothorac Vasc Anesth. 2006 Oct;20(5):664-7. Epub 2006 Aug 8. — View Citation

Larson MD, Behrends M. Portable infrared pupillometry: a review. Anesth Analg. 2015 Jun;120(6):1242-53. doi: 10.1213/ANE.0000000000000314. Review. — View Citation

Ledowski T, Burke J, Hruby J. Surgical pleth index: prediction of postoperative pain and influence of arousal. Br J Anaesth. 2016 Sep;117(3):371-4. doi: 10.1093/bja/aew226. — View Citation

Neice AE, Behrends M, Bokoch MP, Seligman KM, Conrad NM, Larson MD. Prediction of Opioid Analgesic Efficacy by Measurement of Pupillary Unrest. Anesth Analg. 2017 Mar;124(3):915-921. doi: 10.1213/ANE.0000000000001728. — View Citation

Sabourdin N, Barrois J, Louvet N, Rigouzzo A, Guye ML, Dadure C, Constant I. Pupillometry-guided Intraoperative Remifentanil Administration versus Standard Practice Influences Opioid Use: A Randomized Study. Anesthesiology. 2017 Aug;127(2):284-292. doi: 10.1097/ALN.0000000000001705. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Other Intraoperative pupil change Measure the pupillary diameter every 5 minutes after the tracheal intubation until the end of operation. Approximately 2 hour after the anesthesia induction
Other Intraoperative SPI change Check the SPI value throughout the operation using the vital recorder program. Approximately 2 hour after the anesthesia induction
Other Intraoperative mean blood pressure change Check the mean arterial blood pressure throughout the operation using the vital recorder program. Approximately 2 hour after the anesthesia induction
Other Intraoperative heart rate change Check the heart rate throughout the operation using the vital recorder program. Approximately 2 hour after the anesthesia induction
Primary Intraoperative opioid consumption The amount of remifentanil consumption during the operation is calculated by following equation:
Total remifentanil consumption (mcg) / body weight of the patients (kg)/ duration of anesthesia (min)
During the operation period (Within 2 hour after the anesthesia induction)
Primary Peak pain score assessed by numeric rating scale (NRS) in post-anesthesia care unit (PACU) Patients are asked to rate their pain according to the numeric rating scale (NRS, 0=no pain to 10= extreme pain imaginable) every 10 min after the PACU admission. Peak pain score is the peak NRS during PACU stay. Higher NRS represents a worse outcome. During the PACU stay (Within 1 hour after the PACU admission)
Secondary Intraoperative propofol consumption The amount of propofol consumption during the operation During the operation period (Within 2 hour after the anesthesia induction)
Secondary Intraoperative vasopressor or vasodilator consumption The amount of ephedrine and nicardipine consumption during the operation During the operation period (Within 2 hour after the anesthesia induction)
Secondary PACU stay time Duration of time interval from PACU admission to discharge. Approximately within 1 hour after the PACU admission
Secondary Postoperative adverse events Check the postoperative nausea and vomiting, dizziness, desaturation, urinary retention, itching sensation and bradycardia Approximately within 1 hour after the PACU admission
Secondary Remnant sedation degree Remnant sedation is evaluated by Riker Sedation-Agitation Scale every 10 minutes after the PACU admission.
unarousable, minimal or no response to noxious stimuli, does not communicate of follow commands
very sedate, arouse to physical stimuli but does not communicate or follow command, may move spontaneously
sedate, difficult to arouse but awakens to verbal stimuli or gentle shaking, follows simple commands but drifts off again
Calm and cooperative, calm and follows commands
agitated, anxious or physically agitated and calms to verbal instructions
very agitated, requiring restraint and frequent verbal reminding of limits, biting endotracheal tubes
dangerous agitation, pulling at tracheal tube, trying to remove catheters or striking at staff
Approximately within 1 hour after the PACU admission
Secondary Total analgesic consumption after PACU discharge Check the analgesic consumption after PACU discharge including oral, intramuscular and intravenous administration. During 1 day after the operation
Secondary Pain score assessed by numeric rating scale (NRS) 1 day after the operation Patients are asked to rate their pain according to the numeric rating scale (NRS, 0=no pain to 10= extreme pain imaginable) 1 day after the operation. Higher NRS represents a worse outcome. On 1 day after the operation
Secondary initial Pupillary unrest under ambient light (PUAL) At room light, the pupil is taken for 8 seconds at a frame rate of 30 frames per second. The pupillometer generates raw data in the format of pupil diameter versus time. We define the PUAL as the area under the curve of power spectral density between 0.23 and 3 Hz. The integral of the area is calculated using the composite Simpson's rule. Just before the induction of anesthesia
Secondary Pupillary unrest under ambient light (PUAL) on PACU arrival At room light, the pupil is taken for 8 seconds at a frame rate of 30 frames per second. The pupillometer generates raw data in the format of pupil diameter versus time. We define the PUAL as the area under the curve of power spectral density between 0.23 and 3 Hz. The integral of the area is calculated using the composite Simpson's rule. Approximately within 1 min after the PACU admission
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