Ocular pressure waveform reflects ventricular bigeminy and aortic insufficiency
| Autor: | Jean B Kassem, Steven E Katz, Ashraf M Mahmoud, Robert H Small, Subha V Raman, Cynthia J Roberts |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Cup to disc ratio
disc area glaucoma probability score moorfields regression analysis optical coherence tomography Antioxidant supplementation diabetes mellitus free oxygen radicals test nonproliferative diabetic retinopathy reactive oxygen species In vivo confocal microscopy keratocyte density prostaglandin analogues Chronic glaucoma patients economic burden socioeconomic profile Bevacizumab macular edema refractory retinal vein occlusion triamcinolone acetonide Corneal thickness menstrual cycle pachymetry refractive surgery Cytokines diabetic retinopathy pigment epithelium-derived factor vascular endothelial growth factor Choroidal metastases intravitreal bevacizumab transpupillary thermotherapy Fundus examination halogen light indirect ophthalmoscope light emitting diode photo-stress test Algorithm cross-linking Intacs keratoconus normogram Bibliometrics biomedical research journal impact factor ophthalmic research surgical research Aortic insufficiency arrhythmia ocular pulse amplitude ventricular bigeminy Ophthalmology RE1-994 |
| Zdroj: | Indian Journal of Ophthalmology, Vol 63, Iss 1, Pp 59-61 (2015) |
| Druh dokumentu: | article |
| ISSN: | 0301-4738 1998-3689 |
| DOI: | 10.4103/0301-4738.151472 |
| Popis: | Ocular pulse amplitude (OPA) is defined as the difference between maximum and minimum intraocular pressure (IOP) during a cardiac cycle. Average values of OPA range from 1 to 4 mmHg. The purpose of this investigation is to determine the source of an irregular IOP waveform with elevated OPA in a 48-year-old male. Ocular pressure waveforms had an unusual shape consistent with early ventricular contraction. With a normal IOP, OPA was 9 mmHg, which is extraordinarily high. The subject was examined by a cardiologist and was determined to be in ventricular bigeminy. In addition, he had bounding carotid pulses and echocardiogram confirmed aortic insufficiency. After replacement of the aortic valve, the bigeminy resolved and the ocular pulse waveform became regular in appearance with an OPA of 1.6-2.0 mmHg. The ocular pressure waveform is a direct reflection of hemodynamics. Evaluating this waveform may provide an additional opportunity for screening subjects for cardiovascular anomalies and arrhythmias. |
| Databáze: | Directory of Open Access Journals |
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