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Pediatric Cardiology, Policlinico S.Orsola-Malpighi, Bologna, Italy
Fig. 7.1
Sixteen-year-old girl. Mental anorexia . Bradycardia and low voltages are typical. QT prolongation has been described, usually secondary to electrolyte imbalance (hypokalemia)
Fig. 7.2
Three years old. Diabetes , hypoglycemic spell . Note the mild QT prolongation
Fig. 7.3
Ten years old, diabetes onset. As in the previous case, there is a QT prolongation, severe in this case. A mild QRS enlargement can be noted
Fig. 7.4
Ten years old, carnitine deficit with cardiomyopathy (LVEF 35%). (a) Before treatment the QRS lasts 120 ms. (b) After carnitine supplementation, the QRS tends to normal
Fig. 7.5
Seven-year-old male. Renal insufficiency . Hyperkalemia (serum K 6.5 mmm). Note the tall and peaked T wave in the precordial leads
Fig. 7.6
Six-year-old girl with repaired VSD and aortic coarctation . Severe hypokalemia secondary to diuretic treatment. A severe QT prolongation can be noted
Fig. 7.7
Eight-year-old male. Hypocalcemia . Diffuse and extensive ST-T changes . A severe QT prolongation can be noted
Fig. 7.8
Three-year-old female. Dilated cardiomyopathy and hypocalcemia secondary to diuretic treatment . As in the previous case, severe repolarization abnormalities can be noted (QTc 515 ms)
Fig. 7.9
Neonate with truncus arteriosus waiting for surgery. (a) Basal ECG. (b) Functional LBBB due to hypercalcemia (oversupplementation). (c) Close-up of the transition from LBBB to normal
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