PT  - JOURNAL ARTICLE
AU  - Adams, A P
AU  - Freedman, A
AU  - Henville, J D
TI  - Normocapnic anaesthesia for intraocular surgery.
AID  - 10.1136/bjo.63.3.204
DP  - 1979 Mar 01
TA  - British Journal of Ophthalmology
PG  - 204--210
VI  - 63
IP  - 3
4099  - http://bjo.bmj.com/content/63/3/204.short
4100  - http://bjo.bmj.com/content/63/3/204.full
SO  - Br J Ophthalmol1979 Mar 01; 63
AB  - Measurement of intraocular pressure (IOP) by applanation tonometry in 23 patients undergoing lens extraction showed that a normocapnic general anaesthetic technique with controlled ventilation of the lungs (IPPV) reliably reduced the IOP by 50% for the duration of the operative period. This was not associated with large falls in systemic arterial pressure which are often a feature of spontaneously breathing halothane anaesthesia for eye surgery. Normocapnia and IPPV were easy to achieve by use of the single-limb coaxial Bain anaesthetic breathing circuit in conjunction with an electrically driven, small, and inexpensive ventilator while the anesthetic mixture of 33% oxygen and 0.5% halothane in nitrous oxide was delivered at a rate of 70 ml/kg body weight per minute.