2015
DOI: 10.1016/j.yjmcc.2014.11.024
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Clinical symptoms of right ventricular failure in experimental chronic pressure load are associated with progressive diastolic dysfunction

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Cited by 39 publications
(56 citation statements)
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“…It was shown that ventricular-arterial coupling predicts outcome in PH patients (Vanderpool et al, 2015) and further clinical data indicate that progression of PAH-associated RV dysfunction leads to RV failure with increased RV contractility but importantly, impaired RV ventricular-coupling in most patients (Kuehne et al, 2004;Galie et al, 2007), while a subgroup of patients adapt with preserved contractility and compensated RV hypertrophy (Rich et al, 2010;Tedford et al, 2013). Accordingly, a recently published experimental study by Borgdorff and co-workers demonstrates that rats develop either clinical signs of heart failure upon tight pulmonary artery banding or adapt without signs of heart failure (Borgdorff et al, 2015b). Importantly, while indices of systolic function deteriorate upon chronic pressure-overload as compared with sham-operated animals, pressure-volume loop-derived contractility measures indicate a hyper-contractile RV -even in animals with clinical signs of heart failure -accompanied by ventricular-arterial decoupling.…”
Section: Discussionmentioning
confidence: 99%
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“…It was shown that ventricular-arterial coupling predicts outcome in PH patients (Vanderpool et al, 2015) and further clinical data indicate that progression of PAH-associated RV dysfunction leads to RV failure with increased RV contractility but importantly, impaired RV ventricular-coupling in most patients (Kuehne et al, 2004;Galie et al, 2007), while a subgroup of patients adapt with preserved contractility and compensated RV hypertrophy (Rich et al, 2010;Tedford et al, 2013). Accordingly, a recently published experimental study by Borgdorff and co-workers demonstrates that rats develop either clinical signs of heart failure upon tight pulmonary artery banding or adapt without signs of heart failure (Borgdorff et al, 2015b). Importantly, while indices of systolic function deteriorate upon chronic pressure-overload as compared with sham-operated animals, pressure-volume loop-derived contractility measures indicate a hyper-contractile RV -even in animals with clinical signs of heart failure -accompanied by ventricular-arterial decoupling.…”
Section: Discussionmentioning
confidence: 99%
“…were reported (Faber et al, 2006;Bartelds et al, 2011;Kapur et al, 2013;Borgdorff et al, 2013Borgdorff et al, , 2015bde Raaf et al, 2015;Szulcek et al, 2016). However, opening the chest and insertion of the catheter through the RV free wall cause loss of intrathoracic pressure, changes of myocardial integrity and trauma.…”
Section: Introductionmentioning
confidence: 91%
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“…Rats have been reported to survive up to 22 weeks in such condition, despite (near) systemic RV pressures [28]. However, a tighter PAB has been demonstrated to lead to clinical symptoms of RV failure, i.e., inactivity, decreased cleaning behavior (raised fur), poor peripheral circulation, dyspnea/tachypnea, ascites and pleural/pericardial effusions and, ultimately, mortality in a high percentage of animals [17, 2931]. High-intensity exercise capacity [32] and voluntary low-intensity exercise [8, 16, 17] are reduced in this model.…”
Section: Modeling and Evaluating A Unique Ventriclementioning
confidence: 99%
“…Evidence is accumulating that RV failure due to chronic pressure load is characterized by both enhanced systolic function and progressive deterioration of diastolic function [16, 31, 34]. Sparse clinical data show that in PH patients, higher right atrial pressure (an indirect measure of RV diastolic function) is associated with worse outcome.…”
Section: The Physiology Of Rv Adaptation To Increased Afterloadmentioning
confidence: 99%