... 233–4 264 Index244 150 Practice ECGs: Interpretation and Review 110. Interpretation: NSRwithWenckebach(2°heartblock,MobitzI) and 3:2conduc-tion.QRS. 16, QTnormal.Axis -2 0°.Abnormalduetorhythm and LBBB.Comment: ... ECG 160 , 241poor R wave progression and 81, 2212 46 150 Practice ECGs: Interpretation and Review retrograde Ps, nodal rhythm is the diagnosis when there are no Ps, the QRS is narrow, and the ... therapy 171, 243sinus bradycardia and 141, 2 36 ST elevation 56 thrombolytic therapy 142, 187, 2 36 7, 2 46 of uncertain age 67 , 2 16 17Wenckebach block and 166 , 173, 201, 242, 244, 249–50inferolateral...