Dexmedetomidine Versus Propofol in Conjunction With Regional Block for Shoulder Arthroscopy

initial Systolic Blood Pressure (iSBP) measurement at arrival to the operating room. Hour 0 is the time of patient's arrival to the operating room.

initial Mean Arterial blood Pressure (iMAP) measurement at arrival to the operating room. Hour 0 is the time of patient's arrival to the operating room.

Change in Systolic Blood Pressure from iSBP

change in Mean Arterial blood Pressure from iMAP

Global satisfaction of the surgeon regarding anesthesia and patient immobility on a scale from 0 (not satisfied) to 10 (completely satisfied) collected at the end of surgery

Surgeon's evaluation of the bleeding that had affected the surgeon's visibility on a scale from 0 (no bleeding) to 5 (very intense bleeding) collected at the end of surgery

number of episodes of hypotension ( a drop of systolic blood pressure >30% of the initial value recorded at patient arrival to the operating theatre)

respiratory rate (RR) per minute

Beats per minute (BPM)

Oxygen Saturation (SaO2) (%)

use of vasoactive drugs during surgery (Yes or No)

use of vasoactive drugs during PACU stay (Yes or No)

time to achieve desired Bispectral Index (tBIS) level (minutes)

Patient Satisfaction 1(PS1): I would want to have the same anesthetic again on a 5 points Likert scale from 0 to 4: 0= Strongly disagree, 1= Disagree, 2= Neither agree nor disagree, 3= Agree, 4= Strongly agree.

Patient Satisfaction 2(PS2): I felt pain on a 5 points Likert scale from 0 to 4: 0= Strongly disagree, 1= Disagree, 2= Neither agree nor disagree, 3= Agree, 4= Strongly agree.

Patient Satisfaction 3(PS3): I was satisfied with my anesthetic care on a 5 points Likert scale from 0 to 4: 0= Strongly disagree, 1= Disagree, 2= Neither agree nor disagree, 3= Agree, 4= Strongly agree.

Patient Satisfaction 4(PS4): I felt relaxed during the procedure on a 5 points Likert scale from 0 to 4: 0= Strongly disagree, 1= Disagree, 2= Neither agree nor disagree, 3= Agree, 4= Strongly agree.

Occurrence of Post Operative Nausea (PON) at PACU at least on episode (yes or No)

Occurence of Post Operative Vomiting (POV) at PACU at least on episode (yes or No)

need for rescue analgesia (RA) opioids at PACU (Yes or No)

time to reach modified Aldrete score of 9/10 at PACU (minutes)

Visual Analog Scale initial (VASi): Visual analog rating scale for pain (VAS) in which 0 is defined as no pain and 10 as maximum pain at PACU arrival (0-10)

Visual Analog Scale discharge (VASd): Visual analog rating scale for pain in which 0 is defined as no pain and 10 as maximum pain at PACU discharge (0-10)

number of episodes of bradycardia (Heart rate <45/min)

Bispectral index (BIS) level value (0-100). BIS is used to monitor depth of anesthesia or sedation.The BIS is an electroencephalogram-derived multivariant scale.The BIS monitor provides a single dimensionless number, which ranges from 0 (equivalent to EEG silence) to 100 (Normal EEG activity or patient completely awake). 0 = EEG silence, [0 to 20] = burst suppression on EEG, [20 to 40] = deep hypnotic state, [40 to 60] = general anesthesia, [60 to 80] = sedation but individual responds to loud commands or mild shaking, [80 to 99] = sedation but individual responds to normal voice and 100 = Completely Awake.

Ramsay sedation scale value (1-6): 1=Anxious, agitated, restless; 2=Cooperative, oriented, tranquil; 3=Responsive to commands only; 4=Brisk response to light glabellar tap or loud auditory stimulus; 5=Sluggish response to light glabellar tap or loud auditory stimulus; 6=No response to light glabellar tap or loud auditory stimulus.

total duration of Propofol or Dexmedetomidine infusion in minutes

total dose of Propofol (mg) or Dexmedetomidine (mcg) used