Aortic insufficiency causes both volume overload (elevated preload) and pressure overload (elevated afterload due to increased stroke volume) of the heart. The volume overload (due to elevated pulse pressure and the systemic effects of neuroendocrine hormones) causes left ventricular hypertrophy (LVH).
Echo Dot is a hands-free, voice-controlled device that uses the same far-field voice recognition as Amazon Echo. Dot has a small built-in speakerâit can also connect to your speakers over Bluetooth or with the included audio cable.
What's the Difference Between the Amazon Echo and Echo Dot? Amazon recently expanded their stable of Echo products to include the Echo Dot, the tiny sibling of the bigger Echo speaker. Let's take a look at the similarities, differences, and when and where you would want to use each product. There's a bit of confusion over what exactly the Echo Dot is.