oh yes twirl....we could dangle one leg off the back of the chair while we look over our shoulder at the machine....ok I'll stop...
Of course a PD catheter exit site calendar would beget an AV fistula calendar. The possibilities are endless. New fistula, mature fistula, infiltrated fistula, aneurysms of the fistula, buttonholes in fistula, clotted fistula, forearm fistula, upper arm fistula, and so on and so on.