Results: On nursing care of 60 cases of HFMD with severe complication confirmed by throat or rectal swab PCR positive for EV / EV71, given CVVH, showed that the nurses were skillful at techniques of nursing care of CVVH such as preparation of replacement fluid 100%, loading filter cassette 81.7%, priming system & priming test 86.7%, changing bags 83.3%, detecting CVVH induced complications such as hypotension 41.7%, hypothermia 28.3%, recognizing vital alarms such as extremely negative access pressure, high transmembrane pressure due to clotted catheter (36.7%) or clotted filter (21.7%), air in system as well.