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.
The Dot is, literally, the top of the Amazon Echo speaker cylinder millimeter-for-millimeter: it has the same control ring, the same mute button and activation button, the same LED indicator ring light, and the same really sensitive and fantastic 7 microphone array around the top.