Title

Intraocular Pressure And Mechanical Ventilation

Keywords

Hyperventilation; Intraocular pressure; Peak inspiratory pressure; Respirator; Tidal volume; Tonometer; Valsalva maneuver; Ventilation

Abstract

Mechanical ventilation increases superior vena cava pressure and should theoretically increase episcleral venous pressure and intraocular pressure (IOP). A Keeler Pulsair Non Contact Tonometer was used to measure the IOP's of six subjects with no history of glaucoma or ocular hypertension. At 30 min of supine mechanical ventilation of tidal volume with low (7 to 15 cm H2O) peak inspiratory pressures, the IOP's were no different than at the end of a 30-min control period of supine spontaneous ventilation. However, using high (60 cm H2O) peak inspiratory pressures for 1 min after tidal volume ventilation, IOP's were 32.7% higher than at the end of the supine spontaneous ventilation control period (p < 0.05). Patients requiring long-term mechanical ventilation at high peak inspiratory pressures may be at increased risk of vision impairment secondary to machine-induced increase of IOP. © 1993 American Academy of Optometry.

Publication Date

1-1-1993

Publication Title

Optometry and Vision Science

Volume

70

Issue

7

Number of Pages

523-527

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1097/00006324-199307000-00001

Socpus ID

0027312878 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027312878

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