Ventricular hypertrophy Tessa Davis Cite this article as: Tessa Davis. Ventricular hypertrophy, Don't Forget the Bubbles, 2014. Available at: https://doi.org/10.31440/DFTB.5761Ventricular hypertrophy produces changes in one or more of the following areas: the QRS axis, the QRS voltages, the R/S ratio or the T axis. Right ventricular hypertrophy Axis: RAD for the patients age Voltages: V4R / V1: Increased anterior forces (increased R waves greater than limits for patient’s age) V5 / V6: Increased rightward forces (increased S waves greater than limits for patient’s age) R/S ratio: Abnormal R/S ratio in favour of RV V1, V2: R/S ratio greater than upper limits for child’s age V6: R/S ratio less than 1 after one month of age V4R, V1: upright T waves in children 3 days to 6 years (provided T is normal elsewhere ie upright in V6) – evidence alone of significant RVH V1: q wave Left ventricular hypertrophy Axis: LAD for the patients age (marked LAD is rare with LVH) Voltages: V4R / V1: Increased posterior forces (increased s waves greater than limits for patient’s age) V5 / V6: Increased leftward forces (increased R waves greater than limits for patient’s age) R/S ratio: Abnormal R/S ratio in favour of LV V1, V2: R/S ratio less than upper limits for child’s age V 5/6: Q wave ≥ 5mm 1 / aVF: inverted T wave (‘strain’) Biventricular hypertrophy Positive voltage criteria for RVH and LVH (with normal QRS duration) Positive voltage criteria for RVH or LVH and relatively large voltages for other ventricle Large equiphasic QRS complexes in two or more limb leads and in mid‐precordial leads (V2‐5) April 3, 2014
Ventricular hypertrophy
Tessa Davis. Ventricular hypertrophy, Don't Forget the Bubbles, 2014. Available at:
https://doi.org/10.31440/DFTB.5761
Ventricular hypertrophy produces changes in one or more of the following areas: the QRS axis, the QRS voltages, the R/S ratio or the T axis.
Right ventricular hypertrophy
Left ventricular hypertrophy
Biventricular hypertrophy