I-transducer yokucindezela okulahlwayo ingeyesilinganiso esiqhubekayo sokucindezela komzimba kanye nokunquma amanye amapharamitha abalulekile e-hemodynamic.I-DPT ka-Hisern inganikeza izilinganiso ezinembile nezithembekile zomfutho wegazi we-arterial kanye ne-venous ngesikhathi sokusebenza kokungenelela kwenhliziyo.