Evolution of angiotensin II-induced catecholamine release

RG Carroll, DF Opdyke - American Journal of Physiology …, 1982 - journals.physiology.org
The interaction between angiotensin II (ANG II) and catecholamines was examined in
nonmammalian vertebrates. ANG II challenge caused a significant pressor response in …

Portal pressure gradients under experimental conditions, including hemorrhagic shock

CJ Wiggers, DF Opdyke… - American Journal of …, 1946 - journals.physiology.org
The portal vein collects blood from practically all abdominal viscera except the kidneys and
is the chief nutrient vessel of the liver. There is evidence that both sides of this great …

A study of coronary flow under conditions of hemorrhagic hypotension and shock

DF Opdyke, RC Foreman - American Journal of Physiology …, 1947 - journals.physiology.org
Considerable evidence has accumulated indicating that a cardiac factor is at least partially
responsible for the hemorrhagic shock syndrome. The reduction of cardiac output in …

Effect of normal and abnormal changes of intrathoracic pressure on effective right and left atrial pressures

DF Opdyke, GA Brecher - American Journal of Physiology …, 1950 - journals.physiology.org
METHODS Medium-sized mongrel dogs anesthetized with morphine and sodium pentobarbital
were used in this study. The thorax was opened by a right intercostal incision in the …

Hemodynamics of blood flow through the spleen

DF Opdyke - American Journal of Physiology-Legacy …, 1970 - journals.physiology.org
METHODS Dogs were anesthetized with morphine sulfate, 15 mg subcutaneously, followed
0.5 hr later with sufficient saturated choralose solution to produce a surgical level of …

Splenic responses to stimulation in Squalus acanthias

DF Opdyke, NE Opdyke - American Journal of Physiology …, 1971 - journals.physiology.org
METHODS Dogfish of both sexes were anesthetized lightly with pentobarbital sodium (20
mg/kg) injected into a tail artery or vein. The gills were perfused through the spiracles with …

Dynamics of experimental atrial septal defects

RC Little, DF Opdyke… - American Journal of …, 1949 - journals.physiology.org
METHODS Average size mongrel dogs were anesthetized with intravenous sodium barbital
(ca. 350 “g/kg.), or with 3 “g/kg. of morphine subcutaneously and 200“g/kg. of sodium …

Spleen as an experimental model for the study of vascular capacitance

DF Opdyke, CJ Ward - American Journal of Physiology …, 1973 - journals.physiology.org
METHODS Mongrel dogs (10-l 7 kg) were anesthetized with intravenous (iv) sodium
pentobarbital(33 mg/kg body wt) and tethered in the supine position. Anesthesia was maintained by …

A study of alleged intercoronary reflexes following coronary occlusion

DF Opdyke, EE Selkurt - American Heart Journal, 1948 - Elsevier
Flow was measured in the anterior descendens or right coronary artery of dogs before and
after occlusion of an adjacent coronary artery. Of the ten experiments conducted under either …

The relief of acute right ventricular strain by the production of an interatrial septal defect

GA Brecher, DF OPDYKE - Circulation, 1951 - Am Heart Assoc
Since sudden resistance increase in the pulmonary circulation leads to right ventricular
overdistension and subsequent failure, the question was studied whether or not the existence of …