TY - JOUR
T1 - Hypertrophic reprogramming of the left ventricle
T2 - Translation to the ECG
AU - Hill, Joseph A
N1 - Funding Information:
This work was supported by grants from the NIH ( HL-075173 ; HL-080144 ; HL-090842 ), AHA ( 0640084N , JAH), and the AHA-Jon Holden DeHaan Foundation ( 0970518N ).
PY - 2012
Y1 - 2012
N2 - Hypertrophic growth of the heart occurs in many clinical scenarios, and it confers substantially increased risk of untoward sequelae. Among them, transition to ventricular dilation, wall thinning, contractile dysfunction, and a clinical syndrome of heart failure are paramount. Left ventricular hypertrophy (LVH) is typically diagnosed by either electrocardiography or echocardiography. However, these two means of assessing hypertrophic transformation of the left ventricle can sometimes disagree. At one level, this may not be surprising as the two methodologies are based on entirely divergent signals: electrical potential between two places on the surface of the skin and ultrasound energy reflected from the ventricle itself. Echocardiography is an effective means of assessing ventricular mass, which is a cardinal feature of LVH. Importantly, however, LVH is characterized by a wide range of remodeling events beyond simple increases in muscle mass. Electrocardiographic changes in LVH are reflective of the electrophysiological aspects of hypertrophic transformation. Here, I present an overview of the complex biology of left ventricular hypertrophy with an eye toward enhancing our understanding of its ECG manifestations.
AB - Hypertrophic growth of the heart occurs in many clinical scenarios, and it confers substantially increased risk of untoward sequelae. Among them, transition to ventricular dilation, wall thinning, contractile dysfunction, and a clinical syndrome of heart failure are paramount. Left ventricular hypertrophy (LVH) is typically diagnosed by either electrocardiography or echocardiography. However, these two means of assessing hypertrophic transformation of the left ventricle can sometimes disagree. At one level, this may not be surprising as the two methodologies are based on entirely divergent signals: electrical potential between two places on the surface of the skin and ultrasound energy reflected from the ventricle itself. Echocardiography is an effective means of assessing ventricular mass, which is a cardinal feature of LVH. Importantly, however, LVH is characterized by a wide range of remodeling events beyond simple increases in muscle mass. Electrocardiographic changes in LVH are reflective of the electrophysiological aspects of hypertrophic transformation. Here, I present an overview of the complex biology of left ventricular hypertrophy with an eye toward enhancing our understanding of its ECG manifestations.
KW - Cardiac hypertrophy
KW - ECG
KW - Remodeling
KW - Signal transduction
UR - http://www.scopus.com/inward/record.url?scp=84867864470&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867864470&partnerID=8YFLogxK
U2 - 10.1016/j.jelectrocard.2012.08.003
DO - 10.1016/j.jelectrocard.2012.08.003
M3 - Review article
C2 - 22999493
AN - SCOPUS:84867864470
SN - 0022-0736
VL - 45
SP - 624
EP - 629
JO - Journal of Electrocardiology
JF - Journal of Electrocardiology
IS - 6
ER -