WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT -
1. Propofol is a popular drug for gastrointestinal endoscopy. However,
Propofol may result in hypotension, bradycardia, and respiratory
depression.
2. Dexmedetomidine, a α2 receptor agonist, provides
analgesia and sedation but does not cause respiratory depression.
3. Co-administration could improve anaesthetic effectiveness and reduce
the incidences of adverse events caused by a single drug.