PMID- 26818163 OWN - NLM STAT- MEDLINE DCOM- 20160715 LR - 20221213 IS - 1319-6138 (Print) IS - 1319-6138 (Electronic) IS - 1319-6138 (Linking) VI - 21 IP - 1 DP - 2016 Jan TI - Electrophysiological assessment in patients with long term hypoxia. PG - 26-9 LID - 10.17712/nsj.2016.1.20150333 [doi] AB - OBJECTIVE: To evaluate visual evoked potentials (VEP) patterns in chronic obstructive pulmonary disease (COPD) patients who were compliant with supplemental oxygen treatment relative to non-compliant COPD patients. METHODS: This prospective study protocol was reviewed and approved by the local ethical committee of Selcuk University and the research was performed in the Department of Neurology, Elbistan State Hospital, Kahramanmaras, Turkey from May to October 2014. Blood gas measurements and pulmonary function tests were carried out in patients with advanced stage COPD. The VEP was assessed in both eyes in both compliant and non-compliant patients. RESULTS: The study included 43 patients; 24 (55.8%) of the patients were not in compliance with their supplemental oxygen treatment, while 19 patients (44.2%) received adequate oxygen treatment. There was no statistically significant difference between patients with regards to pulmonary function test results and blood gas measurements. The VEP latency was significantly greater in both eyes of the non-compliant patients. CONCLUSION: Previous studies have reported prolonged VEP latencies in inflammatory diseases of the central nervous system. Similar electrophysiological findings were observed in our study and we propose that this may be due to oxidative stress, and inflammation that occurs secondary to chronic ischemia. FAU - Ilik, Faik AU - Ilik F AD - Department of Neurology, Baskent University, Konya, Turkey. E-mail: faikilik@hotmail.com. FAU - Pazarli, Ahmet C AU - Pazarli AC FAU - Kayhan, Fatih AU - Kayhan F FAU - Karamanli, Harun AU - Karamanli H FAU - Ozlece, Hatice K AU - Ozlece HK LA - eng PT - Comparative Study PT - Journal Article PL - Saudi Arabia TA - Neurosciences (Riyadh) JT - Neurosciences (Riyadh, Saudi Arabia) JID - 101252453 SB - IM MH - Aged MH - Aged, 80 and over MH - Blood Gas Analysis MH - Case-Control Studies MH - Evoked Potentials, Visual/*physiology MH - Female MH - Forced Expiratory Volume MH - Humans MH - Hypoxia/etiology/*physiopathology/therapy MH - Male MH - Middle Aged MH - Oxygen Inhalation Therapy MH - Patient Compliance MH - Prospective Studies MH - Pulmonary Disease, Chronic Obstructive/complications/*physiopathology/therapy MH - Respiratory Function Tests MH - Turkey MH - Vital Capacity PMC - PMC5224407 EDAT- 2016/01/29 06:00 MHDA- 2016/07/16 06:00 PMCR- 2016/01/01 CRDT- 2016/01/29 06:00 PHST- 2016/01/29 06:00 [entrez] PHST- 2016/01/29 06:00 [pubmed] PHST- 2016/07/16 06:00 [medline] PHST- 2016/01/01 00:00 [pmc-release] AID - Neurosciences-21-26 [pii] AID - 10.17712/nsj.2016.1.20150333 [doi] PST - ppublish SO - Neurosciences (Riyadh). 2016 Jan;21(1):26-9. doi: 10.17712/nsj.2016.1.20150333.