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Pharmaceutics 2012, 4(3), 377-384; doi:10.3390/pharmaceutics4030377

The Effect of Diluted Penetration Enhancer in Nebulized Mist versus Liquid Drop Preparation Forms on Retrobulbar Blood Flow in Healthy Human Subjects

1
Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
2
Department of Ophthalmology, Hospital of Lithuanian University of Health Sciences Kaunas Clinics, LT-50009 Kaunas, Lithuania
*
Author to whom correspondence should be addressed.
Received: 10 April 2012 / Revised: 25 July 2012 / Accepted: 1 August 2012 / Published: 8 August 2012
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Abstract

The aim of this study was to compare the effects of nebulized mist and liquid drop applications on retrobulbar blood flow. A prospective, non-randomized clinical trial was used to collect data from 40 healthy human eyes. Color Doppler Imaging determined peak systolic (PSV) and end diastolic (EDV) blood flow velocities and resistance index (RI) in the ophthalmic artery after both applications. Measurements were taken at baseline and at 1 min post-treatment in both eyes with 5 min measurements in the treatment eye only. p values ≤ 0.05 were considered statistically significant. Mist application to treatment eye produced an increase in 1 min and 5 min PSV and EDV (0.001 < p < 0.03) and a decrease in 5 min RI (p = 0.01), with no significant changes in PSV, EDV or RI of control eye or in treatment eye 1 min RI (p > 0.05). Drop application to treatment eye produced an increase in PSV (p < 0.001) and EDV (p = 0.01) at 1 min, with an increase in control eye 1 min PSV and EDV (p = 0.03). There were no statistically significant changes in treatment eye PSV, EDV and RI after 5 min (p > 0.05). The use of nebulized mist may provide an effective alternative to liquid drop medication application. View Full-Text
Keywords: retrobulbar blood flow; color Doppler imaging; nebulized mist retrobulbar blood flow; color Doppler imaging; nebulized mist
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Primus, S.; Januleviciene, I.; Siesky, B.; Gerber, A.; Egan, P.; Amireskandari, A.; Siaudvytyte, L.; Barsauskaite, R.; Harris, A. The Effect of Diluted Penetration Enhancer in Nebulized Mist versus Liquid Drop Preparation Forms on Retrobulbar Blood Flow in Healthy Human Subjects. Pharmaceutics 2012, 4, 377-384.

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