References
  1. Marcus GM. Evaluation and Management of Premature Ventricular Complexes. Circulation. 2020 Apr 28;141(17):1404-1418. doi: 10.1161/CIRCULATIONAHA.119.042434. Epub 2020 Apr 27. PMID: 32339046.
  2. Lee GK, Klarich KW, Grogan M, et al. Premature ventricular contraction-induced cardiomyopathy: a treatable condition. Circ Arrhythm Electrophysiol. 2012 Feb;5(1):229-36. doi: 10.1161/CIRCEP.111.963348. Erratum in: Circ Arrhythm Electrophysiol. 2012 Apr;5(2):e62. PMID: 22334430. Lin CY, Chang SL, Lin YJ, Lo LW, Chung FP, Chen YY, Chao TF, Hu YF, Tuan TC, Liao JN, Huang YC, Chang Y, Chiou CW, Chen SA.
  3. Long-term outcome of multiform premature ventricular complexes in structurally normal heart. Int J Cardiol. 2015 Feb 1;180:80-5. doi: 10.1016/j.ijcard.2014.11.110. Epub 2014 Nov 18. PMID: 25438221.
  4. Kim YG, Han KD, Choi JI, et al. Premature ventricular contraction is associated with increased risk of atrial fibrillation: a nationwide population-based study. Sci Rep. 2021 Jan 15;11(1):1601. doi: 10.1038/s41598-021-81229-0. PMID: 33452389; PMCID: PMC7810887.
  5. Agarwal SK, Chao J, Peace F, et al. Premature ventricular complexes on screening electrocardiogram and risk of ischemic stroke. Stroke. 2015 May;46(5):1365-7. doi: 10.1161/STROKEAHA.114.008447. Epub 2015 Apr 14. PMID: 25873602; PMCID: PMC4414890.
  6. Ofoma U, He F, Shaffer ML, et al. Premature cardiac contractions and risk of incident ischemic stroke. J Am Heart Assoc. 2012 Oct;1(5):e002519. doi: 10.1161/JAHA.112.002519. Epub 2012 Oct 25. PMID: 23316293; PMCID: PMC3541607.
  7. Collier P, Phelan D, Klein A. A Test in Context: Myocardial Strain Measured by Speckle-Tracking Echocardiography. J Am Coll Cardiol 2017;69:1043-56.
  8. Voigt JU, Pedrizzetti G, Lysyansky P, et al. Definitions for a common standard for 2D speckle tracking echocardiography: consensus document of the EACVI/ ASE/Industry Task Force to standardize deformation imaging. J Am Soc Echocardiogr 2015;28:183-93.
  9. Chen L, Zhang C, Wang J, et al. Left atrial strain measured by 4D Auto LAQ echocardiography is significantly correlated with high risk of thromboembolism in patients with non-valvular atrial fibrillation. Quant Imaging Med Surg. 2021 Sep;11(9):3920-3931. doi: 10.21037/qims-20-1381. PMID: 34476178; PMCID: PMC8339650.
  10. Mitchell C, Rahko PS, Blauwet LA, et al. Guidelines for Performing a Comprehensive Transthoracic Echocardiographic Examination in Adults: Recommendations from the American Society of Echocardiography. J Am Soc Echocardiogr. 2019 Jan;32(1):1-64. doi: 10.1016/j.echo.2018.06.004. Epub 2018 Oct 1. PMID: 30282592.
  11. Morris DA, Takeuchi M, Krisper M, et al. Normal values and clinical relevance of left atrial myocardial function analysed by speckle-tracking echocardiography: multicentre study. Eur Heart J Cardiovasc Imaging. 2015 Apr;16(4):364-72. doi: 10.1093/ehjci/jeu219. Epub 2014 Nov 3. PMID: 25368210.
  12. Pathan F, D’Elia N, Nolan MT, et al. Normal Ranges of Left Atrial Strain by Speckle-Tracking Echocardiography: A Systematic Review and Meta-Analysis. J Am Soc Echocardiogr. 2017 Jan;30(1):59-70.e8. doi: 10.1016/j.echo.2016.09.007. Epub 2016 Oct 27. PMID: 28341032.
  13. Gan GCH, Ferkh A, Boyd A, et al. Left atrial function: evaluation by strain analysis. Cardiovasc Diagn Ther. 2018 Feb;8(1):29-46. doi: 10.21037/cdt.2017.06.08. PMID: 29541609; PMCID: PMC5835645.
  14. Park Y, Kim S, Shin J, et al. Frequent premature ventricular complex is associated with left atrial enlargement in patients with normal left ventricular ejection fraction. Pacing Clin Electrophysiol. 2014 Nov;37(11):1455-61. doi: 10.1111/pace.12447. Epub 2014 Jul 16. PMID: 25039981.
  15. Cozma D, Streian CG, Petrescu L, et al. Subclinical left atrium remodelling in patients with frequent premature ventricular contractions. Kardiol Pol. 2014;72(11):1141-7. doi: 10.5603/KP.a2014.0133. Epub 2014 Jul 8. PMID: 25522754.
  16. Kanat S, Mutluer FO, Tütüncü A, et al. Left Atrial Function Is Improved in Short-Term Follow-Up after Catheter Ablation of Outflow Tract Premature Ventricular Complexes. Medicina (Kaunas). 2019 Jun 3;55(6):241. doi: 10.3390/medicina55060241. PMID: 31163695; PMCID: PMC6630603.
  17. Chen YS, Chen WD, Chen YH, et al. Atrial and Ventricular Response to Treatment of Premature Ventricular Complexes. Acta Cardiol Sin. 2020 Sep;36(5):475-482. doi: 10.6515/ACS.202009_36(5).20200307A. PMID: 32952357; PMCID: PMC7490612.
  18. Sun Y, Blom NA, Yu Y, et al. The influence of premature ventricular contractions on left ventricular function in asymptomatic children without structural heart disease: an echocardiographic evaluation. Int J Cardiovasc Imaging. 2003 Aug;19(4):295-9. doi: 10.1023/a:1025418531853. PMID: 14598897.
  19. Otsuji Y, Toda H, Kisanuki A, et al. Influence of left ventricular filling profile during preceding control beats on pulse pressure during ventricular premature contractions. Eur Heart J. 1994 Apr;15(4):462-7. doi: 10.1093/oxfordjournals.eurheartj.a060527. PMID: 7520868.
  20. Latchamsetty R, Bogun F. Premature Ventricular Complex-induced Cardiomyopathy. Rev Esp Cardiol (Engl Ed). 2016 Apr;69(4):365-9. doi: 10.1016/j.rec.2015.12.015. Epub 2016 Feb 28. PMID: 26935453.
  21. Del Carpio Munoz F, Syed FF, Noheria A, et al. Characteristics of premature ventricular complexes as correlates of reduced left ventricular systolic function: study of the burden, duration, coupling interval, morphology and site of origin of PVCs. J Cardiovasc Electrophysiol. 2011 Jul;22(7):791-8. doi: 10.1111/j.1540-8167.2011.02021.x. Epub 2011 Feb 18. PMID: 21332870.
Figure LegendFigure 1: Measurement of left atrial strain parameters. LA volume curve and strain curve measured by the 4-Dimensional Automated Left Atrial Quantification (4D Auto LAQ) tool.