The relationship of renal blood pressure and blood flow to the production of experimental hypertension

844

THE

AMERICAN

HEART

JOURNAL

This results in congestion of the liver, which becomes heart is partially obstructed. chronic and causes recurrent asoites. This condition is called chronic mediastinopericarditic pseudocirrhosis of the liver or Pick’s disease. Post-mortem statistics indicate that probably no serious disease is so frequently Tuberculosis of the pericardium is overlooked as one that affects the pericardium. not a rare condition. The terms anatomically primary and clinically primary tuThe occurrence of anatomically primary berculous pericarditis are unsatisfactory. tuberculous pericarditis is questioned. The pericarditis is probably always secondary Most instances of tuberculosis of the pericardium to some other tuberculous lesion. are due to a retrograde extension of the infection through the lymphatic channels In place of the term clinically primary tuberculous perifrom a mediastinal focus. oarditis, it is suggested that cases of tuberculous periear,ditis be divided into (1) those in which the pericarditis was the most important factor in the production of the clinical picture and (2) those which occur during the course of a disseminated tuberculosis. Tuberculosis of the pericardium occurs most often in males over 40 years of age. The colored race appears to be more susceptible to the disease than the white race. The proof of the tuberculous nature of a perieardial effusion may be extremely difficult to obtain. Inoculation of a guinea pig is often necessary. The prognosis of tubereulous pericarditis is bad. The mortality in two series reported in the literature is given as 83 per cent in both instances. Present methods of treatment of tuberculous pericarditis are unsatisfactory. In the healed state tuberculous pericarditis presents the histologic picture of a nonspecific fibrous pericarditis. Pick’s disease has often been found to follow tuberculous pericarditis. Polyserositis is probably tuberculous in origin and is a condition associated with a high degree of immunity to the infection. Tuberculosis of the myocardium, endocardium, and blood vessels is rare. It is difficult to determine any exact relationship between pulmonary tuberculosis and diseases of the heart.

AUTHOR. Koons, R. A., and Kissane, R. W.: The Incidence of Heart Disease in Children With Congenital Syphilis. Urol. & Cutan. Rev. 44: 673, 1940. The relative approximates The permit genital

incidence of heart disease the incidence of congenital

incidence of heart disease in congenitally consideration of syphilis as an etiological heart disease.

The association incidental. type

in congenitally syphilitic syphilis in known cardiac

Congenital of heart

of

syphilis disease

rheumatic

heart

can practically in children.

syphilitic factor

disease

be disregarded

and

in

children children,

children is too the production

congenital as the etiological

heart

closely small to of con-

disease factor

is

in any

AUTHORS. Priedman,

M.,

Pressure Am.

Sugarman,

IX,

and Blood

Plow

J. Physiol.

134:

493,

and Seizer, A.: The Relationship to the Production of Experimental

of Renal Blood Hypertension.

1941.

The renal hemodynamics and systemic constriction above and between the renal

blood artery

pressure were aortie orfices.

It was found that renal ischemia is not necessary of a chronic (renal) experimental hypertension.

for

studied

the initiation

following

sortie

or maintenance

AUTHORS,