Answer
I think you should go back to the cardiologist for a workup. Many
smokers eventually develop heart disease even if they quit. The ankle
discomfort could be due to swelling, which might indicate right-sided
heart dysfunction, as could the breathing problems. If your
heart checks
out completely OK (and an ECG is not really enough to prove
that), you
might also ask about having a sleep study done, since the kind
of airway
obstruction problems that you describe can lead to chronic sleep apnea
and resultant disruption of the normal sleep cycle, which in
turn can
cause muzzy thinking during the day and heart irregularities.
If neither
the heart nor the sleep cycle is abnormal, you might ask a
neurologist if
some kind of seizure disorder is causing these episodic attacks
of chest
pain, tingling, dyspnea, etc. Seizures or ischemic spasms in the brain
stem can mimic heart conditions, etc. and the fact that you have mental
confusion at the same time might point to a neurological cause.
If all
these things turn out negative, you might look for a metablic problem
such as hypoglycemia or excessive adrenal activity. If nothing
shows up
there either, then you might begin to consider whether there is a
possiblity of panic disorder or some other psychological
explanation, but
that is definitely a diagnosis of exclusion---you have to rule
out all the
other stuff I mentioned. I have had two friends who were misdiagnosed
as panic disorder cases on the basis of similar symptoms, one of whom
was in congestive heart failure and the other had some kind of mysterious
adrenal gland problem tied in with chronic fatigue syndrome and
vasovagal dysfunction, so don't let them put you off with "it's
all in your
head"!
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