The Hartford republican. (Hartford, Ky.) 18??-1926, 1914-02-27
THE HUMAN HEART
Work of This Marvellous TWQfold
Pumping Machine.
HAS A LANGUAGE OF ITS OWN.
In Tones That Cannot Be Misunder-
stood II Tells Whether II 10 Strong
or Weak and IL Ailins Notes the
Place anj Cause Of Its Troubles.

or weak and " aNing Notes the
Place anj Cause Of Its Troubles.
When the doctor puts his ear to your
chest or applies the stethoscope. which
only conducts the sounds more clearly,
what does he hear! The sound Of
the normal heart is like the pronuncia-
ton Of the syllables ''lub-dup" close to
each other These syllables are heard
In quick succession. and then comes
a pause-the diastole or resting period
Of the great force pump. The sound
club is that of the blood flowing
out under muscular pressure. aud the
dup is the closing Of the aortic
valves. IL this sound dup" is not
heard 1t shows that the aortic valves
are destroyed or not working.
The latest explanation Of this first
sound. 'lub." is that 1t is caused by
the muscular contraction of the heart
and the impulse of the heart against
the chest wall. The first sound Is
heard more clearly over tue apex of
the heart. the point of the chest near
est to the ventricle The second sound
is best heard over the aOrtic valves.
which lie beneath the left side of the
chest just by the third rib.
II you close IL door with great force
the slam is very loud. aud if the ten
sion in the aorta is very high the
sound dup is louder than usual.
This is most important TO the physi,
clan. for he then knows that there r.
high arterial tension. due to what is
termed an aneurism.
If the sound hub" is weaker than
normal it would indicate a weakness
Of the heart muscle and this is the case
in fevers. In typhoid fever. for in
stance. when this first sound is very
weak. we know that the heart Is so
weak as to make the case alarming.
A heart is said to have "murmur"
when the sharp dup" disappears and
the listening physician hears softened
noise called "murmur." IL you try
to say dup" with your lips open the
sound uttered will be like that the doc
tor hears In the diseased heart whose
valves do not close properly. The
sound produced is something like
duff" and II the mitral valve does not
work well the first syllable is sOftened
into 'luff." IL both valves work poor
ly the sound Is 'luff -duff-luff-duff."
but II both valves are very much out
Of order the sound is like that Of
bellows. "OhO-Oho."
Most persons speak OF the heart as
IL it were a single organ. but actually
it is two hearts Joined together. the
right and the left heart. The right
sends the blood through the lungs so
that 1t may be aerated, or acted, upon
by the oxygen in the inhaled air. while
the left heart sends the blood through
the body in order to nOurish the it's
sues.
Both of these hearts receive the
blood from the large veins into the
which by contracting send
the blood on into the yentrices. and |
when these powerful MUSCLES contract |
the right ventrice pumps the blood |
into the pulmonary artery On the way !
To the lungs and from the left ven
tricle into the aorta. which distributes |
The blood all over the body. 50 that |
after having nourished the nerves and |
il returns through the veins !
Ia the heart. there to be pumped into |
HE lungs for publication by the Oxy-
zen before again passing through the !
sytsem.
The difference in the sOunds of the |
right and left veniricles is traced to |
the difference In resistance of the aorta |
and the pulmonary artery. The pull |
monary artery resiSts with only one |
third the strength of the aorta. so the |
force required is less and the |
noise of the closing gates is that much |,
less
ID IL true. then. that when the physi- /
'tln listens 20 the heating " pa. |
TENTS heart through bis sirihoscOpe |
the heart speaks 10 him in unmistak
able iAngliagr. When II plainly says |
"ub-dup' he knows thai an Is we'll |
with this lnrorlanl orgni. aud he pats !
the patirirt on the shonld.F. saying |!
Nothing serious; you'll lac all right Ia |
a day or two" When. however. the |
heart says "luhduf'' he knows that !
he aor,ic valve is not working prop. /,
criy aud takes the proper steps 10 cor !