TY - JOUR
T1 - Worsening Left Ventricular Apical Peak Strain Early After Right Ventricular Pacing
AU - Quader, Nishath
AU - Jalal, Uzma
AU - Raslan, Serag
AU - Srivathsan, Komandoor
AU - Wilansky, Susan
AU - Unzek, Samuel
AU - Chandrasekran, Krishnaswamy
AU - Mookadam, Farouk
PY - 2013/2
Y1 - 2013/2
N2 - We aimed to determine the effect of short-term right ventricle pacing (RV) on left ventricle (LV) mechanics using speckle tracking analysis. Conventional echocardiography and two-dimensional strain imaging was studied in 38 patients, mean age 81.6 ± 7.0, that had undergone pacemaker placement and were greater than 90% ventricularly paced. Mean duration of 24 months of RV pacing resulted in a significant decline in: LV apical diastolic rotational velocities (-59.0 ± -38.9 °/s to -28.0 ± -11.5 °/s, p 0.02), peak strain in the LV apical septal wall (-15.6 ± 8.5 to -13.5 ± 7.6, p 0.02), peak strain in LV apical lateral wall (-13.4 ± 8.9 to -11.4 ± 7.3, p 0.02). Thus, with only 24 months of RV pacing, there was a significant decline in peak strain of the LV apex and in apical diastolic rotational velocity that could account for eventual decline in left ventricular function.
AB - We aimed to determine the effect of short-term right ventricle pacing (RV) on left ventricle (LV) mechanics using speckle tracking analysis. Conventional echocardiography and two-dimensional strain imaging was studied in 38 patients, mean age 81.6 ± 7.0, that had undergone pacemaker placement and were greater than 90% ventricularly paced. Mean duration of 24 months of RV pacing resulted in a significant decline in: LV apical diastolic rotational velocities (-59.0 ± -38.9 °/s to -28.0 ± -11.5 °/s, p 0.02), peak strain in the LV apical septal wall (-15.6 ± 8.5 to -13.5 ± 7.6, p 0.02), peak strain in LV apical lateral wall (-13.4 ± 8.9 to -11.4 ± 7.3, p 0.02). Thus, with only 24 months of RV pacing, there was a significant decline in peak strain of the LV apex and in apical diastolic rotational velocity that could account for eventual decline in left ventricular function.
KW - Echocardiography
KW - Ejection fraction
KW - Left ventricular function
KW - Pacemaker
KW - Strain
KW - Strain imaging
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U2 - 10.1016/j.ultrasmedbio.2012.09.001
DO - 10.1016/j.ultrasmedbio.2012.09.001
M3 - Article
C2 - 23245819
AN - SCOPUS:84871734099
SN - 0301-5629
VL - 39
SP - 261
EP - 268
JO - Ultrasound in Medicine and Biology
JF - Ultrasound in Medicine and Biology
IS - 2
ER -