Informational Site NetworkInformational Site Network
Privacy
 


Home


Medical Articles


Mother's Remedies


Household Tips


Medicine History


Forgotten Remedies


Search

Medical Articles

Treatment

It is a mistake to try to force a foreign body into the stom...

Pathologic Physiology

The development of permanent injury to one or more valves o...

Muscular Action Weak

The heart is the most important of all muscles. Sometimes the ...

Pneumonia

Its Cause and Prevention. The other great disease of the lung...

The Glands In The Skin

Sweat Glands. Like all the pavement (epithelial) surfaces of ...

Endoscopy In Malignant Disease Of The Larynx

The general surgical rule applying to individuals past middle...

Home Methods Of Purifying Water

Boiling. Where the water that you are obliged to drink is not...

Inflammation Of The Lungs - Pneumonia

This disease is often connected with Pleurisy, and consists o...

Removal Of Foreign Bodies From The Larynx

Symptoms and Diagnosis.--The history of a sudden choking atta...

Stage 4 Passing Through The Hiatus Esophageus

When the head is dropped, it must at the same time be moved ...

Ears Running

In this trouble there is indicated a failure somewhere of the ...

Working Restfully

ONCE met a man who had to do an important piece of sc...

Breathing In Going Uphill

See Breath, and Nerve. British Cholera is to a certain ext...

Pleuroscopy For Disease

Most pleural diseases require a large external opening for d...

Vocal Results

A whispering voice can always be had as long as air can pass...

Emergency Tracheotomy

Stabbing of the cricothyroid membrane, or an attempted stabb...

Pulse Testing For Allergies

Coca's Pulse Tests are extraordinarily useful and simple tool...

Normal Blood Pressure For Adults

Woley [Footnote: Woley, II. P.: The Normal Variation of the S...

The Various Forms And Positions Of Strictures And Other Obstructions Of The Urethra False Passages Enlargements And Deformities Of The Prostate

Impediments to the passage of the urine through the urethra m...

Catarrh Acute

If in the head, treat as prescribed for common colds in the h...



The Effect Of Drugs On Venous Blood Pressure





Category: Uncategorized
Source: Disturbances Of The Heart

Capps and Matthews [Footnote: Capps, J. A., and Matthews, S. A.:
Venous Blood Pressure as influenced by the Drugs Employed in
Cardiovascular Therapy, THE JOURNAL A. M. A., Aug. 9, 1913, p. 388.]
have shown that even with first class preparations of digitalis,
there may be only a moderate gradual rise in arterial pressure, but
not much change in venous pressure. Venous pressure was not much
affected by small doses of epinephrin, but with large doses it rose
from 10 to 80 mm. Pituitary extract acts somewhat similarly to
epinephrin. Caffein, though raising the arterial pressure, did not
influence the venous pressure. Strychnin did not raise either
pressure until the dose was sufficient to cause muscular
contractions. They found that the nitrites caused a fall in venous
pressure as well as arterial pressure, although the heart might be
accelerated and more regular. They think that the nitrites act by
depressing the nerve endings in the veins as well as the arteries.
Morphin they found did not act on the venous pressure, although it
lowered arterial tension, in ordinary doses of 1/8 or 1/6 grain; but
with doses of from 1/4 to 1/2 grain, both arterial and venous
pressures were lowered. They found that alcohol in ordinary doses
did not influence the venous pressure, although it lowered the
arterial pressure; but very large doses lowered the arterial and
raised the venous pressure. They think that when the venous pressure
is increased only by large doses of epinephrin, pituitary extract
and alcohol, the effect is due to failure of the heart, although it
may be due to an increase of carbon dioxid in the blood, in other
words, to asphyxia.





Next: Hypertension

Previous: The Effect Of Drugs On Blood Pressure



Add to Informational Site Network
Report
Privacy
ADD TO EBOOK


Viewed 2036