Vitreous humor thermodynamics during phacoemulsification

The purpose of this study is to determine baseline vitreous humor temperature during a combined phacoemulsification and pars plana vitrectomy (PPV) procedure; to determine what is the temperature variation during phacoemulsification; and to compare vitreous temperature to sublingual temperature. The...

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Bibliographic Details
Published in:International ophthalmology 2015-08, Vol.35 (4), p.557-564
Main Authors: Salcedo-Villanueva, Guillermo, Kon-Jara, Veronica, Harasawa, Mariana, Cervantes-Coste, Guadalupe, Ochoa-Contreras, Daniel, Morales-Cantón, Virgilio, Guerrero-Naranjo, José Luis, Quiroz-Mercado, Hugo, Landers, Maurice B.
Format: Article
Language:English
Subjects:
Adult
Aged
Body Temperature - physiology
Female
Humans
Male
Medicine
Medicine & Public Health
Middle Aged
Ocular Physiological Phenomena
Ophthalmology
Original Paper
Phacoemulsification
Prospective Studies
Retrospective Studies
Thermodynamics
Vitrectomy - methods
Vitreous Body - physiology
Vitreous Hemorrhage - surgery
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Summary:The purpose of this study is to determine baseline vitreous humor temperature during a combined phacoemulsification and pars plana vitrectomy (PPV) procedure; to determine what is the temperature variation during phacoemulsification; and to compare vitreous temperature to sublingual temperature. The methods used are prospective, interventional and comparative study. Patients with a diagnosis of cataract and vitreous hemorrhage, programed for a combined procedure of phacoemulsification and PPV, were included. Patients were excluded if posterior capsular rupture existed during the anterior segment procedure. A thermoprobe was inserted through a PPV trocar. Measurement of the vitreous temperature was obtained at baseline and throughout phacoemulsification, at the end of every surgical step, and every 5 min. Sublingual temperature was measured with the same probe at the end of the surgery. Room temperature was registered. Seventeen eyes of 17 patients were included. Mean sublingual temperature was 36.5 °C (standard deviation [ σ ] 0.26 °C). Mean total vitreous temperature was 31.47 °C ( σ 2.1 °C). Mean baseline vitreous temperature was 33.04 °C ( σ 0.99 °C). Comparison of sublingual temperature with baseline vitreous temperature resulted in a significant difference ( t test P  
ISSN:0165-5701
1573-2630
DOI:10.1007/s10792-014-9983-z