Electrocardiographic changes in institutionalized geriatric glaucoma patients.

A geriatric study was conducted on 213 institutionalized geriatric glaucoma patients (mean age 83.9 years) and 100 control patients (mean age 81.3 years). A 12-lead electrocardiogram (ECG) analyzed according to the Minnesota code was recorded for 212 glaucoma patients and 95 control patients. The most frequent finding (in 56% of the glaucoma patients and in 38% of the control patients, P less than 0.05) was a negative or isoelectric T-wave, suggestive of ischemic heart disease. ECG findings suggestive of coronary heart disease (Q/QS patterns, ST-segment depression, negative or isoelectric T-wave, third or second degree AV block, left bundle branch block or right bundle branch block, intraventricular block or atrial fibrillation or flutter) was seen significantly more often in glaucoma patients (164/212; 77%) than in the control patients (59/95; 62%). Seventeen percent of the glaucoma patients had atrial fibrillation (AF), which was significantly more than for the control group (8/95; 8%). There was no difference in the number of ECG changes between patients with bilateral open-angle glaucoma and bilateral angle-closure glaucoma. The mean intraocular pressure of patients having AF (15.9 +/- 8 mmHg) was significantly lower than that of the other patients (18.4 +/- 11 mmHg) (P less than 0.05). Fifty-five glaucoma patients were considered blind (visual acuity less than 0.05 in the better eye). The visual acuity of patients having AF was lower than that of the other patients, and severe visual field defects (arcuate scotoma or a residual field in the temporal periphery) occurred, slightly more frequently in patients with AF (in 70% vs 51% of the other patients). Arrhythmias, especially AF, are connected with impairment of visual acuity and visual field defects in glaucoma patients. The result of this retrospective study indicate that ECG changes occur frequently, suggesting coronary heart disease in elderly glaucoma patients.