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 can hear you from across the room, even while music is playing. When you want to use Echo Dot, just say the wake word Alexa and Dot responds instantly. If you have more than one Echo or Echo Dot, you can set a different wake word for eachâyou can pick Amazon, Alexa or Echo as the wake word.