Tomoaki Shiba1, Mao Takahashi2, Ryuya Hashimoto3, Tadashi Matsumoto4, Yuichi Hori4. 1. Department of Ophthalmology, School of Medicine, Toho University, 6-11-1 Omori-Nishi, Ota-ku, Tokyo, 143-8541, Japan. tomoaki-s@med.toho-u.ac.jp. 2. Cardiovascular Center, Toho University Sakura Medical Center, Chiba, Japan. 3. Department of Ophthalmology, Toho University Sakura Medical Center, Chiba, Japan. 4. Department of Ophthalmology, School of Medicine, Toho University, 6-11-1 Omori-Nishi, Ota-ku, Tokyo, 143-8541, Japan.
Abstract
PURPOSE: To determine whether a pulse waveform analysis in the optic nerve head (ONH) circulation as determined by laser speckle flowgraphy (LSFG) can provide systemic hemodynamic values - the systemic vascular resistance (SVR) in particular - similar to those obtained by using a Swan-Ganz catheter, which is an invasive method. METHOD: Sixteen consecutive subjects were examined. Hemodynamic monitoring was obtained from right heart catheterization with a Swan-Ganz catheter and coronary angiography without an intracoronary nitroglycerin administration. Direct blood pressure was measured with a trans-radial approach. Single regression analyses were used to determine the relationship between the blowout score and blowout time, which are the items of the pulse waveform analysis in the ONH, by using LSFG and the hemodynamic parameters. RESULTS: The blowout time was significantly and negatively correlated with the SVR (r = -0.52, p = 0.04), the ocular perfusion pressure with the mean arterial blood pressure of the radial artery (r = -0.52, p = 0.04) and the radial artery pulse pressure (r = -0.52, p = 0.04).The pulmonary capillary wedge pressure (r = -0.44, p = 0.09) and the mean arterial blood pressure of the radial artery (r = -0.44, p = 0.09) tended to be correlated with the blowout time, but did not reach significance. The blowout score was significantly and negatively correlated with the radial artery blood pressure (r = -0.51, p = 0.046). CONCLUSION: A pulse waveform analysis in the ONH by LSFG may be one of the useful methods for understanding the SVR.
PURPOSE: To determine whether a pulse waveform analysis in the optic nerve head (ONH) circulation as determined by laser speckle flowgraphy (LSFG) can provide systemic hemodynamic values - the systemic vascular resistance (SVR) in particular - similar to those obtained by using a Swan-Ganz catheter, which is an invasive method. METHOD: Sixteen consecutive subjects were examined. Hemodynamic monitoring was obtained from right heart catheterization with a Swan-Ganz catheter and coronary angiography without an intracoronary nitroglycerin administration. Direct blood pressure was measured with a trans-radial approach. Single regression analyses were used to determine the relationship between the blowout score and blowout time, which are the items of the pulse waveform analysis in the ONH, by using LSFG and the hemodynamic parameters. RESULTS: The blowout time was significantly and negatively correlated with the SVR (r = -0.52, p = 0.04), the ocular perfusion pressure with the mean arterial blood pressure of the radial artery (r = -0.52, p = 0.04) and the radial artery pulse pressure (r = -0.52, p = 0.04).The pulmonary capillary wedge pressure (r = -0.44, p = 0.09) and the mean arterial blood pressure of the radial artery (r = -0.44, p = 0.09) tended to be correlated with the blowout time, but did not reach significance. The blowout score was significantly and negatively correlated with the radial artery blood pressure (r = -0.51, p = 0.046). CONCLUSION: A pulse waveform analysis in the ONH by LSFG may be one of the useful methods for understanding the SVR.
Authors: Kin Hung Liu; Winnie Chiu Wing Chu; Alice Pik Shan Kong; Gary Tin Choi Ko; Ronald Ching Wan Ma; Jeff Wai Sang Chan; Wing Yee So; Andrea O Y Luk; Kitty K T Cheung; Risa Ozaki; Anil T Ahuja; Juliana Chung Ngor Chan Journal: Nephrol Dial Transplant Date: 2012-12-06 Impact factor: 5.992