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Ocular pulse amplitude and retrobulbar blood flow change in dipper and non-dipper individuals.
Eye (Lond). 2011 Jun; 25(6):762-6.E

Abstract

PURPOSE

To evaluate ocular pulse amplitude (OPA), IOP values, and hemodynamic changes in the ophthalmic artery, central retinal artery, and short posterior ciliary artery in dipper and non-dipper patients.

METHODS

A total of 59 right eye measurements of healthy subjects with normotensive were included to the study. Ambulatory blood pressure (BP) monitoring measurement (ABPM), Doppler imaging, and OPA measurements were performed in the same day. The patients in which systolic BP decreased during the nocturnal time by 10% of the diurnal BP or more were called dippers. A patient whose nocturnal systolic BP fell by <10% or even rose was defined as non-dipper. Color Doppler imaging was used for blood flow velocity assessment of ophthalmic, central retinal, and posterior ciliary arteries. For each artery, peak systolic and end-diastolic velocities (PSV and EDV, respectively), resistive index (RI), and pulsalite index (PI) were automatically calculated by the machine. Mean IOP and OPA values were calculated after three consecutive measurements.

RESULTS

The mean OPA in non-dipper patients was significantly lower compared with that of dipper patients (P=0.011). There was no significant difference in IOP levels between groups. There was no significant difference in the PSV, EDV, RI, and PI in the ophthalmic, posterior ciliary, and central retinal arteries between the groups.

CONCLUSION

Our study demonstrated that OPA level in non-dippers is lower than dippers. This may give additional information about the effect of BP changes on OPA values.

Authors+Show Affiliations

Yuzuncu Yil University, Medical School, Department of Ophthalmology, Van, Turkey. drrkaradag@yahoo.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21423136

Citation

Karadag, R, et al. "Ocular Pulse Amplitude and Retrobulbar Blood Flow Change in Dipper and Non-dipper Individuals." Eye (London, England), vol. 25, no. 6, 2011, pp. 762-6.
Karadag R, Keskin UC, Koktener A, et al. Ocular pulse amplitude and retrobulbar blood flow change in dipper and non-dipper individuals. Eye (Lond). 2011;25(6):762-6.
Karadag, R., Keskin, U. C., Koktener, A., Selcoki, Y., Hepsen, I. F., & Kanbay, M. (2011). Ocular pulse amplitude and retrobulbar blood flow change in dipper and non-dipper individuals. Eye (London, England), 25(6), 762-6. https://doi.org/10.1038/eye.2011.50
Karadag R, et al. Ocular Pulse Amplitude and Retrobulbar Blood Flow Change in Dipper and Non-dipper Individuals. Eye (Lond). 2011;25(6):762-6. PubMed PMID: 21423136.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ocular pulse amplitude and retrobulbar blood flow change in dipper and non-dipper individuals. AU - Karadag,R, AU - Keskin,U C, AU - Koktener,A, AU - Selcoki,Y, AU - Hepsen,I F, AU - Kanbay,M, Y1 - 2011/03/18/ PY - 2011/3/23/entrez PY - 2011/3/23/pubmed PY - 2011/9/9/medline SP - 762 EP - 6 JF - Eye (London, England) JO - Eye (Lond) VL - 25 IS - 6 N2 - PURPOSE: To evaluate ocular pulse amplitude (OPA), IOP values, and hemodynamic changes in the ophthalmic artery, central retinal artery, and short posterior ciliary artery in dipper and non-dipper patients. METHODS: A total of 59 right eye measurements of healthy subjects with normotensive were included to the study. Ambulatory blood pressure (BP) monitoring measurement (ABPM), Doppler imaging, and OPA measurements were performed in the same day. The patients in which systolic BP decreased during the nocturnal time by 10% of the diurnal BP or more were called dippers. A patient whose nocturnal systolic BP fell by <10% or even rose was defined as non-dipper. Color Doppler imaging was used for blood flow velocity assessment of ophthalmic, central retinal, and posterior ciliary arteries. For each artery, peak systolic and end-diastolic velocities (PSV and EDV, respectively), resistive index (RI), and pulsalite index (PI) were automatically calculated by the machine. Mean IOP and OPA values were calculated after three consecutive measurements. RESULTS: The mean OPA in non-dipper patients was significantly lower compared with that of dipper patients (P=0.011). There was no significant difference in IOP levels between groups. There was no significant difference in the PSV, EDV, RI, and PI in the ophthalmic, posterior ciliary, and central retinal arteries between the groups. CONCLUSION: Our study demonstrated that OPA level in non-dippers is lower than dippers. This may give additional information about the effect of BP changes on OPA values. SN - 1476-5454 UR - https://www.unboundmedicine.com/medline/citation/21423136/Ocular_pulse_amplitude_and_retrobulbar_blood_flow_change_in_dipper_and_non_dipper_individuals_ L2 - https://doi.org/10.1038/eye.2011.50 DB - PRIME DP - Unbound Medicine ER -