While yellow stool can be caused by sweet potatoes, carrots, and foods with yellow food coloring, it can also indicate excess fat in the stool, which can be caused by a malabsorption disorder like celiac disease, lactose intolerance, or a disorder that prevents the pancreas from providing enzymes that digest fat.
Sinus arrhythmia irregular sinus arrythmia that originates in the SA node, alternating periods of slow and rapid HR, associated with inspiration. - Normal PQRST - Inconsistent R-R intervals - normal in dogs and horses
It is noteworthy that all the observations made by Nakagawa et. al in RVOT patients in this issue of PACE are consistent with this theory: 1) Augmentation of the U wave amplitude during sinus tachycardia (in patients with RVOT-VT) could represent the amplification of DAD amplitude known to accompany rapid pacing.