Dobutamine stress testing in patients with Fontan circulation augmented by biomechanical modeling
نویسندگان
چکیده
منابع مشابه
Pulmonary vascular resistance, collateral flow, and ventricular function in patients with a Fontan circulation at rest and during dobutamine stress.
BACKGROUND The role, interplay, and relative importance of the multifactorial hemodynamic and myocardial mechanisms causing dysfunction of the Fontan circulation remain incompletely understood. METHODS AND RESULTS Using an MRI catheterization technique, we performed a differential analysis of pulmonary vascular resistance and aortopulmonary collateral blood flow in conjunction with global ven...
متن کاملDobutamine stress testing revisited.
I read with great interest the recently published study by Calnon et al. (1), which analyzed the clinical outcome of patients who underwent dobutamine stress single-photon emission computed tomography (SPECT) Tc-99m-sestamibi imaging. Two aspects of this study are rather intriguing, and deserve further examination. First, the annual “hard” cardiac event rate in patients with normal dobutamine S...
متن کاملDobutamine stress MRI catheterisation in patients with hypoplastic left heart syndrome after Fontan completion: preliminary results
Results Four patients were studied (indication was decreased exercise tolerance). Median (range) age was 9.2 years (5.9-11.6). Heart rate (HR) increased at both levels of stress: mean (standard deviation) at rest 60(±7.0), 10mcg/kg/min 110.8(±13.7), 20mcg/kg/min 137.5(±7.0). The rate of increase between rest and 10mcg/kg/min appeared higher than in the normal group. Indexed end diastolic volume...
متن کاملCardiac rest and reserve function in patients with Fontan circulation.
OBJECTIVES In the present study, we systematically tested cardiac rest and reserve function in patients with Fontan physiology to check for inherent limitations of this circulation. BACKGROUND Details of the mechanisms of cardiac performance that could account for adverse outcome after Fontan surgery are not well understood. METHODS The subjects were 17 Fontan patients with good functional ...
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ژورنال
عنوان ژورنال: PLOS ONE
سال: 2020
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0229015