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.
Echo Dot: Echoâs much smaller sibling. At $90, the Echo Dot is certainly cheaper than Echo, but it has inherited many of its older siblingâs features, such as far-field array, which allows it to understand voice commands from 20 to 25 feet, even in noisy environments; a light ring to show when itâs listening; and more.