International Journal of Spectroscopy / 2011 / Article / Fig 5

Research Article

Near-Infrared Spectroscopy of the Bladder: New Parameters for Evaluating Voiding Dysfunction

Figure 5

Simultaneous data (uroflow, voided volume, and NIRS pattern of chromophore change) in a child with severe symptoms of nonneurogenic lower urinary tract dysfunction. Following permission to void a sharp decrease in [O2Hb] is evident with a coincident equal and opposite increase in [HHb] (5–10 seconds), while [tHb] remains stable (see similarity in Figure 6, 785–790 seconds). Between uroflow start and uroflow end [O2Hb] shows an overall downward trend while [HHb] rises further initially and then plateaus. [tHb] rises briefly and then falls reflecting simultaneous changes in [O2Hb] and [HHb]. The overall chromophore pattern during voiding implies an imbalance of oxygen supply and demand and the potential for muscle fatigue due to oxygen debt.

We are committed to sharing findings related to COVID-19 as quickly as possible. We will be providing unlimited waivers of publication charges for accepted research articles as well as case reports and case series related to COVID-19. Review articles are excluded from this waiver policy. Sign up here as a reviewer to help fast-track new submissions.