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.
November 17, 2016: Weâve added discussion of the second-generation Echo Dot, which is essentially the same as the original Dot but with slightly different top-panel controls; itâs almost half the price of the original Dot. Weâve also added notes on our experience using the new Alexa skill for the Harmony Hub remote.