Cardiology Department (P.B., X.L., V.T.T., M.A.B., A.V., E.Y., D.M.N., U.P., J.L., S.P.T., P.C.Q.), Westmead Hospital, Sydney, Australia. Westmead Applied Research ...
While not a typical first-line treatment, doctors may also consider a sphenopalatine ganglion (SPG) block. The SPG is a cluster of neurons that sits behind your nose and above your mouth.
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