Bedi, P. S., Pahwa, B., Hooda, B. and Dwivedi, D. (2019) “Plethysmographic variability index as a tool to assess fluid responsiveness in critically ill patients: a correlation study with inferior vena cava distensibility index”, International Journal of Research in Medical Sciences, 7(12), pp. 4663–4672. doi: 10.18203/2320-6012.ijrms20195535.