Evaluation of Medasense's PMD-200 During Surgery and Post Anesthesia Care

Terminated

• Conditions: Surgery; Nociceptive Pain; Postoperative Pain

• Registration Number: NCT03276260
• Lead Sponsor: Medasense Biometrics Ltd

Brief Summary

Medasense's Pain Monitoring Device (PMD) is a novel non-invasive, bedside stand alone, continuous monitor that is designed to provide real-time information about changes in the nociception level of patients under general anesthesia during surgical procedures.

The PMD-200 System is based on real-time data acquisition and processing of physiological signals. The system displays the NOL index (a single numerical index) which is computed from recorded physiological parameters based on a proprietary algorithm.

Detailed Description

The aim of this observational study is to evaluate the pattern of the NOL index during surgery in the anesthetized patient and during the post-operative period in the awake patient.

Up to 100 patients scheduled for elective surgery under general, regional and local anesthesia and sedation, who meet all the inclusion and none of the exclusion criteria, will be enrolled after signing informed consent.

Study Timeline

• Study First Submitted: 2017-08-02
• Study First Submitted QC: 2017-09-07
• Study First Posted: 2017-09-08
• Study Start: 2018-01-01
• Primary Completion: 2019-04-30
• Study Completion: 2019-04-30
• Status Verified: 2020-03
• Last Update Submitted: 2020-03-09
• Last Update Posted: 2020-03-11

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 2

Inclusion Criteria

• Both genders
• Age 18 - 75 years
• ASA physical status 1-3
• Elective surgery

Exclusion Criteria

• History of severe cardiac arrhythmia
• Abuse of alcohol or illicit drugs
• Preoperative opioid consumption for > 1 week
• History of mental retardation or any mental disease diagnosis
• Under sedation protocol - Patients with difficult spontaneous ventilation ( for e.g. patients with sleep apnea) will be excluded.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Specificity and sensitivity of the NOL index for detecting nociception as evaluated by receiver operating characteristics curve (ROC) analysis.	At time of surgery, between the anaesthesia induction and extubation.	The calculated area under the graph of change in NOL values in response to a painful stimulus, as mentioned in Outcome 1.
The ability of NOL index to change in response to noxious and non noxious stimuli as well as in response to analgesic administration.	At time of surgery. 1 minute before and 1 minute after painful stimuli (for instance: intubation, skin incision, trocar insertion

Secondary Outcome Measures

Name	Time	Method
Total time with mean arterial pressure (MAP) < 65 mmHg and correlation to NOL values during surgery and anaesthesia.	At time of surgery, between the anaesthesia induction and extubation.
Patients' NRS (numerical rating scale ) values during stay in PACU (arrival to discharge).	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.	NRS will be recorded every 15 min in the PACU
Sedation scores during stay in PACU (arrival to discharge).	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.	Sedation scores will be recorded every 30 min in the PACU
Total analgesics administration during PACU (arrival to discharge) and frequency of administration	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.
The correlation between NOL values during surgery and anesthesia to NOL values during the post-operative period.	From the anaesthesia induction till the discharge from the PACU, an average of 5-6 hours.	The NOL will be calculated via the investigational device.
The change in NOL Index in response to pre-defined non noxious and noxious stimuli during surgery in the anesthetized patient.	At time of surgery: pre-defined non noxious period - a period of 2 minutes with no noxious event with a minimal time period of 3 min prior and following laryngoscopy and intubation, skin incision or first trocar insertion.	Pre-defined noxious events - laryngoscopy and intubation, skin incision or first trocar.
Time to first analgesic request or administration in PACU.	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.
The change in NOL index in response to administration of analgesics.	At time of surgery, 1min before versus 1 min after administration of analgesics drugs.
Number of opioid adverse effects in PACU (nausea and vomiting, pruritus, desaturation, respiratory depression, apnea).	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.
Time of readiness to discharge from PACU	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.	This time will be recorded since it may be different from the actual time of discharge which may be prolonged due to non-medical reasons.
Total fentanyl administration during surgery and anaesthesia and frequency of bolus administration.	At time of surgery, between the anaesthesia induction and extubation.
NOL values during stay in PACU in the awake patient (arrival to discharge)	Throughout PACU (Post Anesthesia Care Unit) stay, between entering PACU to discharge, an average of 2.5 hours.	The NOL will be calculated via the investigational device.

Trial Locations

Locations (1)

Rambam Health Care Campus; 🇮🇱 Haifa, Israel