منابع مشابه
Myocardial Tension and Oxygen Uptake.
• Since the report of Evans and Matsuoka ' a half century ago, it has been known that myocardial oxygen uptake increases in approximately a linear fashion with mean arterial pressure, but is affected only slightly by increases in cardiac output.' This paradox, that "pressure work" is much more costly than "volume work," complicated the analysis of the energetics of myocardial contraction. A con...
متن کاملMyocardial myoglobin oxygen tension.
COBURN, R. F., F. PLOEGMAKERS, P. GONDRIE, AND R. ABBOUD. Myocardial myoglobin oxygen tension. Am. J. Physiol. 224(4): 870-876. 1973.-We have applied our method of estimating mean myoglobin oxygen tension from measurements of carbon monoxide binding to myoglobin to the in vivo canine myocardium. Carbon monoxide binding to myoglobin was determined with measurements of 14C0 in myocardial biopsy s...
متن کاملIs coronary sinus blood oxygen tension behavior determined by myocardial oxygen tension variation during cardiac reperfusion?
The relationship between coronary sinus blood oxygen tension (CSPO2) and myocardial oxygen tension (MPO2) variations during cardiac ischemia and reperfusion was studied in anesthetized open-chest dogs. Oxygen tension was measured by a polarographic method. Ischemia resulted in a slightly decreased CSPO2 and a more pronounced reduction of MPO2. After reperfusion the CSPO2 rose rapidly and transi...
متن کاملBlood Flow, Blood Oxygen Tension, Oxygen Uptake, and Oxygen Transport in Skeletal Muscle.
STAINSBY, WENDELL N., AND ARTHUR B. OTIS. BZoodLfTow, blood oxygen tension, oxygen uptake, and oxygen transport in skeletal muscle. Am. J. Physiol. 206(4) : 858-866. rg64.-The effect of changes in blood flow and of blood oxygen tension on oxygen uptake of the in situ gastrocnemius-plantaris muscle group of the dog was examined. Oxygen uptake by resting muscle was not altered by changes in blood...
متن کاملThe Effect of Oxygen Tension on the Oxygen Uptake of Lake Bacteria.
Many studies have been made on the influence of oxygen tension upon the growth and activity of various organisms (Amberson, 1928, Hyman, 1929), but relatively few measurements of oxygen consumption have been made. Although it is generally agreed that most bacteria have definite oxygen optima for multiplication and for certain physiological activities, no generalizations can be made from the fra...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1964
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.14.2.139