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A study to evaluate ocular changes in patients undergoing spine surgery in the prone position
Kiranpreet Kaur1, Neetu Khanduri1, Sumit Sachdeva2
1Department of Anaesthesiology and Critical Care, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India.
Journal of Anaesthesiology, Clinical Pharmacology
|March 28, 2022
Summary
Spine surgery in the prone position increases intraocular pressure (IOP) and reduces ocular perfusion pressure (OPP). Careful positioning and management are crucial to prevent visual disturbances.
Area of Science:
- Ophthalmology
- Neurosurgery
- Anesthesiology
Background:
- Prospective study evaluating ocular changes during prone spine surgery.
- Focus on intraocular pressure (IOP) and ocular perfusion pressure (OPP).
Purpose of the Study:
- To assess the impact of prone spine surgery on ocular parameters.
- To identify risk factors for post-operative visual disturbances.
Main Methods:
- 44 patients (ASA I-II, 18-60 years) undergoing elective prone spine surgery.
- Measured IOP and mean arterial pressure (MAP) at baseline, post-induction, post-surgery, and post-extubation.
- Calculated OPP (MAP-IOP).
- Ophthalmic examinations pre- and post-operatively.
Main Results:
- Mean IOP significantly increased from 12.85 ± 3.07 mm Hg to 18.91 ± 3.56 mm Hg (P < 0.001).
- Mean OPP significantly decreased from baseline to 75.12 ± 16.45 (P = 0.0018).
Conclusions:
- Prone spine surgery leads to significant IOP elevation and OPP reduction.
- Recommendations include careful patient positioning, minimizing surgical time and blood loss, and preventing hypotension to mitigate risks.
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