*(Mobitz Type I -or- Wenchebach)*
*(Mobitz Type II)*
– Seen in Hypothermia, Subarachnoid Hemorrhage (SAH), and Hypercalcemia
– Positive deflection following the t-wave but preceding the p-wave.
– Found in hypokalaemia but also in hypercalcaemia and thyrotoxicosis.
– According to the *Gubner Criteria*, the sum of the
amplitudes of *R wave in lead I (RED)* and *S wave in lead III (BLUE)* is >2.5 mV (25 mm), suggesting LVH in this patient.
– According to the Sokolow-Lyon voltage criteria, the
sum of the amplitudes of *S wave in C1 or C2 (RED)* and *R wave in C5 or C6 (BLUE)* is >3.5 mV (35 mm) and suggests the presence of LVH.