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For an ordinary convulsive attack in the case of a child, hold...
This symptom or affection, (if it can be classed as a disease...
From The Hygienic Dictionary 2
Toxemia.  "Toxemia is the basic cause of all so-called dise...
Auricular Fibrillation Occurrence
This condition of auricular fibrillation occurs occasionally ...
When a child is suffering after vaccination, we should have hi...
Ulcerative lesions in the larynx during typhoid fever are al...
Some peoples' lives don't run smoothly. Jeanne's certainly di...
There are a number of methods for the endoscopic removal of ...
This is often a trivial matter, but sometimes it is a symptom ...
Strangulation Or Hanging
Often accidentally caused in children or intoxicated persons. ...
What is commonly called a "cough and spit" is sometimes due to...
How And Why We Breathe
Life is Shown by Breathing. If you wanted to find out whether...
Varioloids And Chicken-pocks
_Varioloids_ and _Chicken-pocks_, are treated in the same man...
Bruises Case Xvii
An old man, aged 60, received a bruise upon the occiput from ...
Preparation Of The Patient For Peroral Endoscopy
The suggestions of the author in the earlier volumes in regar...
Rich Foods Brandy Beef-tea Etc
must be avoided. Involuntary starting, and the manifestation...
Congenital And Pathological Deformities Of The Prepuce And Urethra Stricture And Mechanical Obstructions Of The Urethra
When any of the central organs of the body presents in a fo...
Metallo-therapy has been defined as a mode of treating vari...
During rheumatism the peripheral blood vessels are generally ...
Endoscopy On The Human Being
Dog work offers but little practice in laryngoscopy. Because...
Interpretation Of Tracings
Source: Disturbances Of The Heart
The interpretation of the arterial tracing shows that the nearly
vertical tip-stroke is due to the sudden rise of blood pressure
caused by the contraction of the ventricles. The long and irregular
down-stroke means a gradual fall of the blood pressure. The first
upward rise in this gradual decline is due to the secondary
contraction and expansion of the artery; in other words, a tidal
wave. The second upward rise in the decline is called the recoil, or
the dicrotic wave, and is due to the sudden closure of the aortic
valves and the recoil of the blood wave. The interpretation of the
jugular tracing, or phlebogram as the vein tracing may be termed,
shows the apex of the rise to be due to the contraction of the
auricle. The short downward curve from the apex means relaxation of
the auricle. The second lesser rise, called the carotid wave, is
believed to be due to the impact of the sudden expansion of the
carotid artery. The drop of the wave tracing after this cartoid rise
is due to the auricular diastole. The immediate following second
rise not so high as that of the auricular contraction is known as
the ventricular wave, and corresponds to the dicrotic wave in the
radial. The next lesser decline shows ventricular diastole, or the
heart rest. A tracing of the jugular vein shows the activity of the
right side of the heart. The tracing of the carotid and radial shows
the activity of the left side of the heart. After normal tracings
have been carefully taken and studied by the clinician or a
laboratory assistant, abnormalities in these readings are readily
shown graphically. Especially characteristic are tracings of
auricular fibrillation and those of heart block.
Next: Tests Of Heart Strength
Previous: Clinical Interpretation Of Pulse Tracings