Journal of perinatology : official journal of the California Perinatal Association · 2015
Influence of patent ductus arteriosus and ventilators on electrical velocimetry for measuring cardiac output in very-low/low birth weight infants.
Clinical StudyСравнительное исследованиеСтатьяНазвание и аннотация: Перевод в очереди
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Torigoe T, Sato S, Nagayama Y, Sato T, Yamazaki H
Аннотация
OBJECTIVE: We evaluated electrical velocimetry, a noninvasive method for continuous cardiac output measurement, in very-low and low birth weight infants and the influence of patent ductus arteriosus (PDA) and ventilators on this method.
STUDY DESIGN: This prospective study compared 81 pairs of simultaneous cardiac output measurements by electrical velocimetry and transthoracic echocardiography in 28 patients. Data were compared by correlation, Bland-Altman analysis and two-way analysis of variance.
RESULTS: The two methods exhibited a high correlation (r=0.859, P<0.0001). The bias (mean difference of the methods) and percent error (100 × 1.96 × s.d./mean cardiac output) were -6 ml min(-1) and 29.2%, respectively. PDA significantly affected the bias (P=0.0004), but ventilators did not (P=0.14). Hemodynamically significant PDA had a larger bias (-36 ml min(-1)) and higher percent error (38.6%).
CONCLUSIONS: Although influenced by PDA, electrical velocimetry was generally interchangeable with transthoracic echocardiography even using ventilators.
STUDY DESIGN: This prospective study compared 81 pairs of simultaneous cardiac output measurements by electrical velocimetry and transthoracic echocardiography in 28 patients. Data were compared by correlation, Bland-Altman analysis and two-way analysis of variance.
RESULTS: The two methods exhibited a high correlation (r=0.859, P<0.0001). The bias (mean difference of the methods) and percent error (100 × 1.96 × s.d./mean cardiac output) were -6 ml min(-1) and 29.2%, respectively. PDA significantly affected the bias (P=0.0004), but ventilators did not (P=0.14). Hemodynamically significant PDA had a larger bias (-36 ml min(-1)) and higher percent error (38.6%).
CONCLUSIONS: Although influenced by PDA, electrical velocimetry was generally interchangeable with transthoracic echocardiography even using ventilators.