Why would my heart speed up/race & skips beats within the first-ish minute upon lying down after briefly getting out of bed? (No low bp on standing)

Heart speeds stand. 27 F from Nz asks why would heart speedy up andskip beats on rising up from rest. ANS: stand, blood pools in legs and BP FALLS for A FEW seconds. Baroreceptors sendmessageto heart to beat faster and stronger. Heart speeds up. But extra beats not part of if. So ask you Dr. Are you counting heart beats carefully to detect skipped beats?