中图分类号：R541.6；R541.7+5 文献标识码：A

    DOI：10.3969/j.issn.1006-1959.2025.13.028 文章编号：1006-1959(2025)13-0142-04

    Abstract：OjectieTsudtelicalfndsfetyofdifeentdosofaroabainetreamentoflderlypatientswihartfalure andatrialiliesol2trlirtflcdralr hospitalweredividedintoacontrolgoupandanobservationgroup(29casespergoup)usingaandomumbertablemethod.Thecontrolgroup received rivaroxaban with a dose of 20mg/d ，while the observation group received rivaroxaban with a dose of 10mg/d .Theclinical efficacy，cardiac functionineatdeeofdactddefdosdebovstsd betweenhetgouResultshrsatisallysiiiantdieineotaletivatefrmntetwtoos( Pgt; (20 0.05).TheefttruarjetiofrctonLVEFoftetogousasertantatforetreamntndedstoliceftriclar posterior wallthickness(LVPWD) was lower than that before treatment( P_Φ lt;0.05)，but there wasno statistically significant difference inLVEFand LVPWD between the two groups after treatment( Pgt;0 0.05).The D-dimer(D-D)of the two groups was lower than that before treatment，and the prothrombitsoert)utsatistllteid two groups after treatment( Pgt;0.05 ).Theincidences of adversereactionsand cardiovascularandcerebrovascular events intheobservationgroup were bothlowerthantoseinthotrolgoupPO5).Cocusioneliicaletsoffretdossofivaroabanintetreamntfelderly patientswitartedloallpeduodedlatioo However ......