Fig 6.c

An SVT at the same rate as the PAT with block: the latter, unblocked. The AVB protected the patient from the very fast atrial rate – a “friend in need” 9 . The sharply positive atrial spikes are superimposed on T waves in V1.

An SVT at the same rate as the PAT with block: the latter, unblocked. The AVB protected the patient from the very fast atrial rate – a “friend in need” 9 . The sharply positive atrial spikes are superimposed on T waves in V1.