This term is applied so loosely and so indiscriminately to al...
Is a most valuable aid to health, acting as a physical and men...
The cause of this is a nervous derangement of the internal org...
Consumption Prevention Of
This most insidious and deadly disease is caused by a tiny veg...
In the common form this is purely neuralgic. The nerves are in...
Often very serious trouble takes the form of simple overwhelmi...
Prolapsus Uteri Falling Of The Womb
Take the B D current, of good medium force, and give general ...
If these are of the nature of cramps, which come on while lyin...
Cancer In Face
Treat as far as possible as recommended for breast cancer. ...
Water For Drinking
Every care should be taken to have drinking water absolutely p...
Physical Signs Of Tracheal Foreign Body
If fixed in the trachea the only objective sign of foreign bo...
To Prevent Diarrhoea
Where it is prevailing as an _epidemic_, _Ipecac_ at night, a...
This, in various forms, as brandy, whiskey, rum, wine, cordial...
Treat croup, whether membranous or spasmodic, much the same a...
Enough has already been said of the value and limitations of ...
The Relation Of The Principal Bloodvessels Of The Thorax And Abdomen To The Osseous Skeleton Etc
The arterial system of vessels assumes, in all cases, somewha...
The only sure sign of the presence of this parasite in the int...
The Roentgenographic Signs Of Expiratory-valve-like Bronchial Obstruction
The roentgenray signs in expiratory valve-like obstruction of...
The Use Of The Will
IT is not generally recognized that the will can be t...
To Prevent Typhoid Fever
When exposed, as in nursing the sick, take _Baptisia_ 2d, and...
Source: Disturbances Of The Heart
Aortic narrowing or stenosis is a frequent occurrence in the aged
and in arteriosclerosis when the aorta is involved. It is not a
frequent single lesion in the young. If it occurs in children or
young adults, it is likely to be combined with aortic regurgitation,
meaning that the valve hay been seriously injured by an
The first effect of this narrowing is to cause hypertrophy of the
left ventricle, and as long as this ventricle is able to force the
blood through the narrowed opening at the aortic valve, the general
circulation is perfect. Nature again steps in to cause such a heart
to heat deliberately, allowing time for the contracting ventricle to
force the blood through the narrowed orifice. The blood pressure may
be sufficient, or even increased if arteriosclerosis is present,
although the rise of the sphygmograph tracing is not so high as
normal. If the pressure in the aorta is sufficient from the amount
of blood forced into it, the coronary arteries receive enough blood
to keep up the nutrition of the heart muscle. Sooner or later,
however, the left ventricle will become weakened, especially when
there is arteriosclerosis or other hypertension, and chronic
endocarditis and fatty degeneration result. If the left ventricle
becomes sufficiently weakened or dilated, the same damming back of
the blood through the lungs and right heart occurs, and more or less
serious signs of broken compensation develop. The main danger,
however, with a heart with this lesion, occurring coincidently with
arteriosclerosis, is a progressive chronic myocarditis.
Next: Other Lesions
Previous: Physics Of Aortic Lesions