Shimfiɗa, shara, ko pram na'ura ce da ake amfani da ita don motsa marasa lafiya waɗanda ke buƙatar kulawar likita.Dole ne mutane biyu ko fiye su ɗauki nau'i na asali ( gado ko datti).Ana sanye da shimfiɗaɗɗen ƙafar ƙafa (wanda aka sani da gurni, trolley, gado ko cart) sau da yawa tare da madaidaicin firam ɗin tsayi, ƙafafu, waƙoƙi, ko skids.A cikin Ingilishi na Amurka, ana kiran shimfiɗar ƙafafu a matsayin gurney.
Ana amfani da masu shimfiɗa da farko a cikin matsanancin yanayi na kulawa daga asibiti ta sabis na likita na gaggawa (EMS), sojoji, da ma'aikatan bincike da ceto.A binciken likitanci an bar hannun dama na gawa a rataye a kan shimfiɗa don sanar da ma'aikatan jinya cewa ba mara lafiya ba ne.Ana kuma amfani da su wajen tsare fursunoni a lokacin yin alluran mutuwa a Amurka.