Acta ophthalmologica · 2015
Nocturnal blood pressure in primary open-angle glaucoma.
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Pillunat Karin R, Spoerl Eberhard, Jasper Carolin, Furashova Olga, Hermann Cosima, Borrmann Anne, Passauer Jens, Middeke Martin, Pillunat Lutz E
Аннотация
PURPOSE: To evaluate the nocturnal blood pressure (BP) dipping-pattern in patients with manifest primary open-angle glaucoma (POAG) and to find possible associations with the severity of visual field damage.
METHODS: A number of 314 patients suffering from POAG were consecutively enrolled in this cross-sectional hospital-based study. Each patient had diurnal intraocular pressure (IOP) measurements, 24-hr BP monitoring and computerized perimetry with the Humphrey 30-2 sita Standard program. Inclusion criteria were a mean IOP of less than 15 mmHg with fluctuations of less than 5 mmHg and a visual acuity of at least 20/40. One eye was randomly selected. Based on the night-day BP ratio, a mean arterial nocturnal BP drop of less than 10% was considered as non-dipping, between 10% and 20% as physiological dipping and of more than 20% as over-dipping.
RESULTS: Glaucoma patients with daytime systemic normotension on the average had more visual field loss in the over-dipper group (MD = - 16.6 dB, IQR = -18.9 to -2.7 dB) than glaucoma patients with daytime systemic hypertension, who had less visual field defects in the over-dipper group (MD = -3.9 dB, IQR = -6.2 to -1.9 dB) (p = 0.004). This result was also found taking age, glaucoma duration, visual acuity, gender, systemic and topical medication as covariates into account.
CONCLUSIONS: To judge the nocturnal BP situation of an individual patient, it is important to do this in relation to the daytime BP level. Twenty-four-hour BP evaluation might be important for all patients with POAG, as nocturnal BP could be a modifiable risk factor for glaucoma severity and progression.
METHODS: A number of 314 patients suffering from POAG were consecutively enrolled in this cross-sectional hospital-based study. Each patient had diurnal intraocular pressure (IOP) measurements, 24-hr BP monitoring and computerized perimetry with the Humphrey 30-2 sita Standard program. Inclusion criteria were a mean IOP of less than 15 mmHg with fluctuations of less than 5 mmHg and a visual acuity of at least 20/40. One eye was randomly selected. Based on the night-day BP ratio, a mean arterial nocturnal BP drop of less than 10% was considered as non-dipping, between 10% and 20% as physiological dipping and of more than 20% as over-dipping.
RESULTS: Glaucoma patients with daytime systemic normotension on the average had more visual field loss in the over-dipper group (MD = - 16.6 dB, IQR = -18.9 to -2.7 dB) than glaucoma patients with daytime systemic hypertension, who had less visual field defects in the over-dipper group (MD = -3.9 dB, IQR = -6.2 to -1.9 dB) (p = 0.004). This result was also found taking age, glaucoma duration, visual acuity, gender, systemic and topical medication as covariates into account.
CONCLUSIONS: To judge the nocturnal BP situation of an individual patient, it is important to do this in relation to the daytime BP level. Twenty-four-hour BP evaluation might be important for all patients with POAG, as nocturnal BP could be a modifiable risk factor for glaucoma severity and progression.