I too am phase and have heart-related PD issues. See:
Heart, cardiac, Sinemet, vasodilation, po... - Cure Parkinson's
Heart, cardiac, Sinemet, vasodilation, postprandial and orthostatic hypotension, blood pressure distribution.
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Sympathetic cardioneuropathy in dysautonomias.
Goldstein DS, Holmes C, Cannon RO 3rd, Eisenhofer G, Kopin IJ.
N Engl J Med. 1997 Mar 6;336(10):696-702.
PMID: 9041100 Free Article
nejm.org/doi/10.1056/NEJM19...
RESULTS
Patients with pure autonomic failure or parkinsonism and sympathetic neurocirculatory failure had no myocardial 6-[18F]fluorodopamine–derived radioactivity or cardiac norepinephrine spillover, indicating loss of myocardial sympathetic-nerve terminals, whereas patients with the Shy–Drager syndrome had increased levels of 6-[18F]fluorodopamine–derived radioactivity, indicating intact sympathetic terminals and absent nerve traffic. Patients with dysautonomia who did not have sympathetic neurocirculatory failure had normal levels of 6-[18F]fluorodopamine–derived radioactivity in myocardium and normal rates of cardiac norepinephrine spillover.
CONCLUSIONS
The results of 6-[18F]fluorodopamine positron-emission tomography and neurochemical analyses support a new clinical pathophysiologic classification of dysautonomias, based on the occurrence of sympathetic neurocirculatory failure, signs of central neurodegeneration, and responsiveness to levodopa–carbidopa.
I meant, I too am phase 3.