Perbandingan efektivitas MgSO4 25 mg/kg intravena dengan lidokain 1,5 mg/kg intravena dalam menekan respon hemodinamik saat intubasi = Comparison of the effectiveness of intravenous MgSO4 25 mg/kg with intravenous lidocaine 1 ,5 mg/kg in suppressing hemodynamic response during intubation