urination and affib

[Guest guest]

I found the info explaining the reason for frequent urination while in AFIB.

The atrium releases a peptide when stretched, called " Atrial

Natriuretic peptide " which has the effect of a diuretic and reduces

blood volume.

" Atrial Natriuretic Peptide is a hormone that is released from the

atrial cells in the heart in response to overstretch of the atrial

cardiac muscle cells. Specific volume receptors in the atria detect

an increase in plasma volume due to stretching beyond a certain

threshold or limit (Rector, 1987). This peptide is released in

response to stimuli that increase blood volume in the body, such as a

blood transfusion or an increased salt and water intake and

ultimately this peptide controls these changes by increasing the

urinary volume excretion through several different mechanisms. "

..... " This vasodilation causes an increase in capillary pressure, thus

an increase in glomerular filtration rate, causing an increase in

urinary volume excretion. In response to an increase in blood volume

and thus blood pressure, this will cause the blood volume to directly

drop (pressure diuresis) "

-

jerry