TY - CHAP M1 - Book, Section TI - Atrioventricular (AV) Block A1 - Hay, Jr, William W. A1 - Levin, Myron J. A1 - Deterding, Robin R. A1 - Abzug, Mark J. PY - 2017 T2 - Quick Medical Diagnosis & Treatment Pediatrics AB - First-degree AV block: Prolongation of the PR intervalSecond-degree AV blockMobitz type I (Wenckebach)Recognized by progressive prolongation of the PR interval until there is no QRS following a P waveMobitz type IINo progressive lengthening of the PR interval before the dropped beatCongenital complete AV blockMost common formOccurs in a fetus or infant with an otherwise normal heart SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/18 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1145453930 ER -