A.keep bedrest.
check BNP, Troponin-I, cardial enzyme
O2 mask 6L/min support, on EKG monitor
B.Carotid stenosis
Aortic dissection
C.control BP
(A) CT with contrast, cardiac sono
(B)aortic dissection
(C)if type a--> consult CVS and arrange operation// if type b, control bp strictly with sbp below 140mmHg with labetolol