Olfactory dysfunction in patients with Parkinson's disease: A systematic review and meta-analysis.

Parkinson's disease (PD) is a progressive neuro-degenerative disease and olfactory dysfunction is considered as an important issue in these patients. The prevalence of olfactory dysfunction in patients with PD was reported variously in previous studies. Therefore, we designed this systematic review and meta-analysis to estimate the pooled prevalence of olfactory dysfunction in patients with PD.

Effects of Dexmedetomidine On the Postoperative Shivering, Nausea, and Vomiting Among Opium User Patients Undergoing Elective Supratentorial Brain Tumor Surgery: A Randomized, Placebo, Controlled Clinical trials.

Background: Postoperative nausea and vomiting (PONV) and shivering are common general anesthesia complications. Hence, this study evaluates the effect of dexmedetomidine, given as a premedication, on PONV and shivering in patients with opium use who underwent elective supratentorial brain tumor surgeries.

Materials And Methods: In a randomized clinical trial, 100 opium user patients who were candidates for elective supra-tentorial brain tumor surgery under general anesthesia were studied in two groups of 50 patients.

Classifying depth of anesthesia using EEG features, a comparison.

Various EEG features have been used in depth of anesthesia (DOA) studies. The objective of this study was to find the excellent features or combination of them than can discriminate between different anesthesia states. Conducting a clinical study on 22 patients we could define 4 distinct anesthetic states: awake, moderate, general anesthesia, and isoelectric.