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International Ophthalmology

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21-07-2022 | Anemia | Original Paper

Evaluation of VEP parameters in patients before and after cardiopulmonary by-pass surgery

Authors: Alper Güneş, Şerife Gülhan Konuk, Helin Deniz Demir, Semiha Kurt, Erdinç Naseri, Ünal Erkorkmaz

Published in: International Ophthalmology | Issue 2/2023

Abstract

Purpose

Coronary bypass surgery is emphasized in aetiology of ischemic optic neuropathy. Our aim in this study was to investigate the pattern visual evoked potentials (PVEP) in patients before and after coronary bypass surgery.

Methods

Thirty-one patients were included in the study. After a full ophthalmological evaluation, PVEP was assesed in the pre and postoperative periods. Operative times, hematological parameters, blood pressures, number of transfusions, body temperatures, anaesthetic drugs and systemic illnesses were recorded for each patient.

Results

The mean age of the patients were 59 ± 10.4 years. There was 22 men and 9 women in the study. Only 3 of them needed transfusion during the surgery. The mean duration of the surgery was 3.2 ± 0.7 h. None of the patients had a history of visual disturbance or postoperative ischemic optic neuropathy. The mean VEP P100 amplitude was not statistically significantly different but the mean VEP P100 latency showed statistically significant difference between the preoperative and postoperative periods. (p = 0.014) This significance was more appereant in patients with systemic illnesses. (p = 0.023) There was a positive correlation between the age and VEP P100 latency (r = 0.402, p < 0.05).

Conclusions

Although surgical techniques and equipments are developing each day in the field of cardiopulmonary bypass surgery, the contributing factors such as hypothermia, anemia and diabetes still seem to affect neurophysiological functions even after a noncomplicated surgery.

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Title: Evaluation of VEP parameters in patients before and after cardiopulmonary by-pass surgery
Authors: Alper Güneş
Şerife Gülhan Konuk
Helin Deniz Demir
Semiha Kurt
Erdinç Naseri
Ünal Erkorkmaz
Publication date: 21-07-2022
Publisher: Springer Netherlands
Keywords: Anemia
Evoked Potential
Evoked Potential
Published in: International Ophthalmology / Issue 2/2023
Print ISSN: 0165-5701
Electronic ISSN: 1573-2630
DOI: https://doi.org/10.1007/s10792-022-02435-x

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Evaluation of VEP parameters in patients before and after cardiopulmonary by-pass surgery

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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