View clinical trials related to Photoplethysmography.
Filter by:The objective of this observational study is to explore microcirculation in healthy volunteers and in ventilated patients in the operating room and in critical care. The general objective of this study is to evaluate microcirculation with photoplethysmography (PPG) in different pathophysiological situations and to compare PPG with available standard methods. Specifically, evaluate the correlation between the determinations of AC-DC waves obtained by Photoplethysmography (PPG) and those obtained in different dynamic tests in healthy volunteers. To compare microcirculation assessments [capillary refill time (CRT), perfusion index (PI), perfusion index variability (PIV)] with measurements obtained by PPG in the context of critically ill patients. To compare microcirculation assessments (CRT, PI PVI) with measurements obtained by PPG in the context of patients on invasive mechanical ventilation (IMV) in the operating room and in critical care.
The purpose of the research is to compare the influence of customized foot orthoses use on the venous status among healthy female and male subjects. This is a quasi-experimental study which included 20 healthy subjects. Sociodemographic and medical record data are registered. Furthermore,venous function is evaluated by plethysmography, first, without orthoses and, after 20 days, with orthoses.