VIEW THE MOBILE VERSION of www.homemedicine.ca Informational Site Network Informational
Privacy


Home


Medical Articles


Mother's Remedies


Household Tips


Medicine History


Forgotten Remedies


Search

Medical Articles

Symptoms

The symptoms are increased tension, which means, sooner or la...

Hypotension

A low systolic pressure and a low diastolic pressure may no...

Polarization

It may be proper, in this place, to spend a few words upon el...

Blood

A most common trouble is anaemia, a lack of good red blood, sh...

Additional Rules For The Treatment Of Eruptive Diseases

In all these eruptive diseases, especially small-pox, all I h...

Morning Sickness Of Pregnant Females

The most efficient and certain remedy for this symptom is _Ma...

Direction Of The Esophagus

The esophagus enters the chest in a decidedly backward as we...

Diagnosis

It has been estimated that 70 per cent of stenoses of the es...

Sleeplessness

In search of sleep men do many things both dangerous and fooli...

Asthma

If an attack comes on from sudden cold, take _Aconite_ and _I...

Wounds And Bruises

On this subject, I must necessarily be very brief. When a wou...

Gastroscopy

The stomach of any individual having a normal esophagus and n...

Infection

Few things have so great and distressing effect as the fear of...

Eyes Accidents To

Three distinct classes of these are to be considered. They req...

Unconsciousness

There are two opposite causes of unconsciousness. One is conge...

Cholera Morbus

This disease generally comes on at night, in hot weather, and...

Colic Of Whatever Kind

Use A D current, pretty strong force. In severe cases, introd...

Night Pains

If these are of the nature of cramps, which come on while lyin...

List Of Instruments

The following list has been compiled as a convenient basis f...

Breast Sore Nipples On

Take a little warm vinegar or weak acid (see Acetic Acid). Bat...



Physics Of Mitral Stenosis





Category: Uncategorized
Source: Disturbances Of The Heart

Mitral stenosis, though less common than mitral regurgitation, is a
frequent form of disease of the valves, especially in women. Often
this condition is associated with regurgitation; but in a simple
mitral stenosis the greatest hypertrophy is of necessity in the
right ventricle. The left auricle finds it difficult to empty all of
its blood into the left ventricle during the ordinary diastole of
the heart. This auricle then somewhat hypertrophies, but is unable
to prevent more or less damming back of the blood into the lungs
through the pulmonary veins. This causes passive congestion of the
lungs, and the right ventricle finds that it must labor to overcome
the increased resistance in the pulmonary artery, and hypertrophies
to overcome this increased amount of work. When this condition has
become perfected, compensation is established and the circulation is
apparently normal. Nature causes these hearts, when they are
disturbed or excited, to pulsate slowly, causing the diastole to be
longer than in a heart with mitral regurgitation. This allows more
blood to enter the left ventricle, and the left ventricle, acting
perfectly on the blood which it receives, causes a good systolic
pressure in the aorta and the systemic arteries. The left ventricle
in this condition does not become hypertrophied. If the heart does
act rapidly and the left ventricle contracts on an insufficient
amount of blood, the peripheral pulse is necessarily small and the
arterial tension is diminished. Very constant in this condition, and
of course noticeable whenever there is pulmonary congestion, is the
sharp, accentuated closure of the pulmonary valve. The lungs on the
least exertion are always a little overfilled with blood. The
pulmonary circulation is always working at a little disadvantage.

The first symptoms of lack of compensation with the lesion of mitral
stenosis are lung symptoms--dyspnea, cough, bronchitis, slight
cyanosis, sometimes blood streaks in the expectorated mucus and
froth, and, if the congestion is considerable, some edema of the
posterior part of the lungs, if the patient is in bed. Sooner or
later during this failing compensation the right ventricle becomes
dilated, and the symptoms of cardiac insufficiency and venous
congestion occur, as described above with mitral insufficiency.

Again, as in mitral insufficiency, if compensation is restored in
mitral stenosis, these symptoms are improved. These patients,
however, are never quite free from dyspnea on exertion. Any
inflammation of the lungs, even a severe bronchitis, is more or less
serious for the patients and their hearts. The mucous membrane of
their bronchial tubes and air vesicles is always hyperemic, and it
takes little more congestion to all but close up some of the
passages. and dyspnea or asthma, or suffocating, difficult cough is
the consequence.





Next: Physics Of Aortic Lesions

Previous: Decompensation



Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 1383