Mechanism of myocardial ischemic memory: why does post-systolic shortening persist after brief ischemia?

Post-systolic shortening: a functional window into ischemic memory?

Myocardial post-systolic shortening is characterized by a large variability in both duration and magnitude. Although typically occurring in a setting of ischemic heart disease, this regionally asynchronous myocardial contraction is considered a normal finding in approximately one-third of myocardial segments in healthy subjects, as long as the magnitude is low and the systolic strain is preserv...

Why Does Misallocation Persist?∗

There is growing interest in the view that underdevelopment may not just be a matter of lack of resources like capital, skilled labor, entrepreneurship or ideas but also a consequence of the misallocation or misuse of available resources. In particular Banerjee and Duflo (2005), Jeong and Townsend (2007), Restuccia and Rogerson (2008), Hsieh and Klenow (2009), Bartelsman et al. (2008), Alfaro e...

Why does religiosity persist?

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Why Does the Problem Persist?

One of the most perplexing factors in the Japanese financial crisis is the apparently non-optimal and non-rational behaviour of Japanese banks. In this article, we provide a “rational” explanation for bank behaviour based on the long-term relationships between banks and entrepreneurs and show that they result in “rational rigidity” in lending. We find three implications of rational rigidity – a...

Why does airway inflammation persist after the smoking stops?