Subnormalization of Left Ventricular Shape after Succesful Coronary Revascularization

Authors

  • B. Knap
  • P. Trunk
  • G. Juznic

DOI:

https://doi.org/10.1532/HSF98.20051162

Abstract

Background. It is asumed that the shape and size of the left ventricle could change after successful revascularization and that the shape and size reflect left ventricular function.

Methods. Echocardiography and Simpson's rule were used for evaluating the endocardial surface area of the left ventricle and elongation of the left ventricle as shape index in 13 patients before coronary arterio-venous bypass grafting (CABG) and 1 year after successful CABG.

Results. After succesful CABG, the left ventricle becomes bigger and less elongated than before CABG. Results show a change from concentric hypertrophy of the left ventricle before CABG to subnormalization after CABG.

Discussion. We suppose that the subnormalization of left ventricular size and shape is the result of successful CABG and successful rehabilitation. The change of left ventricular size and shape after CABG might depend more on the original state of the left ventricle before surgery.

References

Gersak B, Sostaric M, Kalisnik JM. 2003. Endoscopic aortic valve replacement. Heart Surg Forum 6(6): E197-9.nTischler MD, Niggel J, Borowski DT, LeWinter MM. 1993. Relation between left ventricular shape and exercise capacity in patients with left ventricular disfunction. J Am Coll Cardiol 22:751-7.nSchmailzl KJ, Ormerod O. 1994. Ultrasound in Cardiology. Oxford, England: Blackwell Science. Tasdemir O, Kucukaksu DS, Tarcan O, Vural K, Sener E. 1999. Succesful reoperation after Batista partial left ventriculectomy demonstrates patient's hemodynamic recovery. Tex Heart Inst J 26(2):132-5.nJuznic G, Juznic S, Knap B, Drzewiecki G, Li K-J J, Noordergraaf A. 1996. The endocardial surface of the left ventricle and its cylindricality. J Cardiovasc Diagn Proc 13(1):41-6.nVanelli P, Berreta L, Fundaro PM, et al. 1999. Left ventricular volume reduction for end-stage heart disease. J Card Surg 14(1):60-3.nGersak B. 2003. A technique for aortic valve replacement on the beating heart with continuous retrograde coronary sinus perfusion with warm oxygenated blood. Ann Thorac Surg 76(4):1312-4.nWilkins GT, Southern JF, Choong CY, et al. 1988. Correlation between echocardiographic endocardial surface mapping of abnormal wall motion and pathologic infarct size in autopsied hearts. Circulation 77(5):978-87.nGreen GR, Moon MR, DeAnda A Jr, Daughters GT, Glasson JR, Miller DC. 1998. Effect of partial left ventriculectomy on left ventricular geometry and wall stress in excised porcine heart. J Heart Valve Dis 7(5):474-83.nJuznic G, Juznic S, Knap B. 1992. The inner surface of the left ventricle-- a new noninvasive parameter of left ventricular function. Biomedizinische Technik Band 37 Erganzungsband 1:116-8.nRankin JS, McHale PA, Arentzen CE, Ling D, Greenfield JC, Anderson RW. 1976. The three-dimensional dynamic geometry of the left ventricle in the conscious dog. Circ Res 39:304-13.nCicek S, Demirkilic U, Tatar H, Bingol H, Ozturk OY. 1997. Left ventricular endoaneurysmorphy: effect on left ventricular size, shape and function. Cardiology 88(4):340-5.nDrzewiecki G, Li J K-J, Knap B, Juznic S, Juznic G, Noordergraaf A. 1996. Cardiac hypertrophy and shape--a noninvasive index? J Cardiovasc Diagn Proc [Invited paper] 13:193-8.nJuznic S, Juznic G, Knap B. 1998. Ventricular shape: spherical or cylindrical? In: Drzewiecki G, Li J K-J, eds. Analysis and Assessment of Cardiovascular Function. New York, NY: Springer-Verlag; 156-67.nKnap B, Juznic G, Juznic S, Li K-J J, Drzewiecki G, Noordergraaf A. 1996. A noninvasive determination of the endocardial surface of the left ventricle. J Cardiovasc Diagn Proc 13(3):199-203.nKnap B. 1999. The shape of the left ventricle as reflection of its function. [Doctoral dissertation] Ljubljana, Slovenia.nKnap B, Juznic G, Bren AF, Drzewiecki G, Noordergraaf A. 2002. Elongation as a new shape index for the the left ventricle. Int J of Cardiovasc Imaging 18:421-30.nKnap B, Juznic G, Bren AF, Noordergraaf A. 2003. Shape of the left ventricle and its computer modeling. Computers in Biology and Medicine 33(3):197-202.nKrumholz HM, Larson M, Levy D. 1995. Prognosis of left ventricular geometric patterns in the Framingham Heart Study. J Am Coll Cardiol 25(4):879-84.nMotulsky, H. 1995. Intuitive Biostatistics. Oxford, England: Oxford University Press.nDevereux RB. 1995. Left ventricular geometry, pathophysiology and prognosis. J Am Coll Cardiol 25(4):885-7.nFeigenbaum RM. 1986. Echocardiography. 4th ed. Philadelphia, PA: Lea & Febiger.n

Published

2005-11-01

How to Cite

Knap, B., Trunk, P., & Juznic, G. (2005). Subnormalization of Left Ventricular Shape after Succesful Coronary Revascularization. The Heart Surgery Forum, 8(6), E453-E455. https://doi.org/10.1532/HSF98.20051162

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