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.
Amazon Eco Dot. Take the Echo, slice off the top, and you've got the Echo Dot. The Dot ditches the high-quality built-in speaker to cut down on cost, while still giving you all of Alexa's smarts. A smaller built-in speaker does let you talk to Alexa, but it's not good enough for streaming music.