Junctional Premature Beat

ECG Features

Figure 1: ECG Strip[1]

A junctional premature beat or premature junctional complex (PJC) is "a premature beat arising from an ectopic focus within the AV junction."[2] Premature contractions are classified by their origin: atrial (PACs), junctional (PJCs), or ventricular (PVCs).

Table 1: ECG Characteristics[3]

ECM Features

Figure 2: ECM Analysis, Record 114[4][5]

Additional Information


  1. Premature Junctional Complex [Online image]. (2013). Retrieved July 19, 2016, from http://www.practicalclinicalskills.com/ekg-reference-guide-details?lessonID=22
  2. Accelerated Junctional Rhythm. (n.d.). Retrieved July 27, 2016, from http://lifeinthefastlane.com/ecg-library/pjc/
  3. Accelerated Junctional Rhythm. (n.d.). Retrieved July 27, 2016, from http://www.practicalclinicalskills.com/ekg-reference-guide-details?lessonID=22
  4. MIT-BIH Arrhythmia Database. (1980). Retrieved June, 2016, from https://physionet.org/physiobank/database/mitdb/
  5. Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh, Mark RG, Mietus JE, Moody GB, Peng C-K, Stanley HE. PhysioBank, PhysioToolkit, and PhysioNet: Components of a New Research Resource for Complex Physiologic Signals. Circulation101(23):e215-e220 [Circulation Electronic Pages;http://circ.ahajournals.org/cgi/content/full/101/23/e215]; 2000 (June 13).