UNLABELLED: A 37 year-old male, with nocturnal tachycardias and three accesses of true syncopes related to strain has familiar antecedents of two sudden deaths; his father, 55 years, for sudden cardiac death and one brother died, 22 months infant, of sudden death. In a detailed exam, we observed that the patient has a short PQ interval and a short QT (Bazett and Fridericia's Formulas) with a risk of sudden cardiac death, according to the scale of Schwartz, 4.5/4 points. In the first impression, the interpretation of the EKG outline induces to think of Lown-Ganong-Levine's Syndrome. In a more detailed exam we observed that as the interval in this syndrome is normal, it is short in patient's (Short QTc-f interval). Two possibilities: an unknown variant of L-G-L's Syndrome and a new syndrome. METHODS: Exhaustive measurements of the electrocardiographic intervals, segments and waves. Technique of measurement: MioLaserTool Pixruler. RESULTS: Short PQ and QT intervals. The RR interval: 0.860 s. The QT interval: 0.29 s. Bazett's Formula: 0.312 s. PQ Interval: 0.10-0.11 s. DISCUSSION: An electrocardiographic pattern unknown, shortening (Decrease) of electrical cardiac systole or stimulation accelerated auricle-ventricular with precocious ventricular repolarization. CONCLUSIONS: To make aware to the physicians the necessity to construct an exhaustive measurement of these parameters, in the cases those indicate pathology in the cardiac sphere.
UNLABELLED: A 37 year-old male, with nocturnal tachycardias and three accesses of true syncopes related to strain has familiar antecedents of two sudden deaths; his father, 55 years, for sudden cardiac death and one brother died, 22 months infant, of sudden death. In a detailed exam, we observed that the patient has a short PQ interval and a short QT (Bazett and Fridericia's Formulas) with a risk of sudden cardiac death, according to the scale of Schwartz, 4.5/4 points. In the first impression, the interpretation of the EKG outline induces to think of Lown-Ganong-Levine's Syndrome. In a more detailed exam we observed that as the interval in this syndrome is normal, it is short in patient's (Short QTc-f interval). Two possibilities: an unknown variant of L-G-L's Syndrome and a new syndrome. METHODS: Exhaustive measurements of the electrocardiographic intervals, segments and waves. Technique of measurement: MioLaserTool Pixruler. RESULTS: Short PQ and QT intervals. The RR interval: 0.860 s. The QT interval: 0.29 s. Bazett's Formula: 0.312 s. PQ Interval: 0.10-0.11 s. DISCUSSION: An electrocardiographic pattern unknown, shortening (Decrease) of electrical cardiac systole or stimulation accelerated auricle-ventricular with precocious ventricular repolarization. CONCLUSIONS: To make aware to the physicians the necessity to construct an exhaustive measurement of these parameters, in the cases those indicate pathology in the cardiac sphere.