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Surgical factors affecting oculocardiac reflex during strabismus surgery
Suk-Gyu Ha1,2, Jungah Huh1,2, Bo-Ram Lee1,2
1Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea.
BMC Ophthalmology
|April 21, 2018
Summary
The first muscle operated during strabismus surgery increases the risk of oculocardiac reflex (OCR). Heart rate reductions during surgery did not fully recover in patients experiencing OCR.
Area of Science:
- Ophthalmology
- Anesthesiology
- Cardiology
Background:
- Strabismus surgery carries risks, including the oculocardiac reflex (OCR).
- Understanding factors influencing OCR is crucial for patient safety during eye muscle surgery.
Purpose of the Study:
- To identify surgical factors linked to the occurrence of oculocardiac reflex (OCR).
- To analyze heart rate (HR) changes during strabismus surgery in relation to OCR.
Main Methods:
- 162 strabismus surgeries under general anesthesia were analyzed.
- Heart rate (HR) was monitored at baseline, during muscle traction, post-traction (adrenergic phase), and muscle cutting.
- OCR was defined as >20% HR reduction during muscle traction.
Main Results:
- The incidence of OCR was 65%.
- The first operated muscle in two-muscle surgeries was a significant risk factor for OCR (OR=3.95).
- HR reduction during surgery did not fully recover in patients with OCR.
Conclusions:
- Operating the first muscle in two-muscle strabismus surgery is a significant risk factor for OCR.
- Persistent HR reduction post-traction indicates incomplete recovery in OCR patients.
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