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Archives of cardiovascular diseases
Volume 103, n° 8-9
pages 430-436 (août 2010)
Doi : 10.1016/j.acvd.2010.07.002
Received : 11 December 2009 ;  accepted : 2 July 2010
Correlations between urinary excretion of catecholamines and electrocardiographic parameters of vagal hyperreactivity in infants with fainting spells. Implication of sympathetic hypotonia?
Corrélations entre les excrétions urinaires des catécholamines et les paramètres électrocardiographiques de l’hyperréactivité vagale chez des nourrissons présentant des malaises. Implication d’une hypotonie sympathique ?
 

Figure 1




Figure 1 : 

A. Correlation between Loge (epinephrine) and RRmax on ECG recording during oculocardiac reflex for detecting vagal hyperreactivity, in infants with fainting spells (0.5 to 11months old). r =−0.34; P =0.012. B. Correlation between Loge (norepinephrine) and RRmax on ECG recording during oculocardiac reflex for detecting vagal hyperreactivity, in infants with fainting spells (0.5 to 11months old). r =−0.25; P =0.06. Loge (norepinephrine) was significantly correlated with the three OCR ECG parameters of VHR (RRmax, Fmin and % deceleration) taken together in a multiple correlation (r =|0.33|; P =0.015).

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