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
If the SA node fails to initialize, the AV junction can take over as the main pacemaker of the heart. The AV junction surrounds the AV node (the AV node is not able to initialize its own impulses) and has a regular rate of 40 to 60 bpm. These junctional rhythms are characterized by a missing or inverted P-Wave.