scholarly journals Effect of aerobic fitness on capillary blood volume and diffusing membrane capacity responses to exercise

2016 ◽  
Vol 594 (15) ◽  
pp. 4359-4370 ◽  
Author(s):  
Vincent Tedjasaputra ◽  
Melissa M. Bouwsema ◽  
Michael K. Stickland
Keyword(s):  
Blood Volume ◽  
Aerobic Fitness ◽  
Capillary Blood ◽  
Membrane Capacity ◽  
Capillary Blood Volume

scholarly journals Effects of Acetazolamide on Cerebral Blood Flow, Blood Volume, and Oxygen Metabolism: A Positron Emission Tomography Study with Healthy Volunteers

2001 ◽  
Vol 21 (12) ◽  
pp. 1472-1479 ◽  
Author(s):  
Hidehiko Okazawa ◽  
Hiroshi Yamauchi ◽  
Kanji Sugimoto ◽  
Hiroshi Toyoda ◽  
Yoshihiko Kishibe ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Metabolic Rate ◽  
Blood Volume ◽  
Cerebral Blood Volume ◽  
Capillary Blood ◽  
Emission Tomography ◽  
Positron Emission ◽  
Capillary Blood Volume

To evaluate changes in cerebral hemodynamics and metabolism induced by acetazolamide in healthy subjects, positron emission tomography studies for measurement of cerebral perfusion and oxygen consumption were performed. Sixteen healthy volunteers underwent positron emission tomography studies with15O-gas and water before and after intravenous administration of acetazolamide. Dynamic positron emission tomography data were acquired after bolus injection of H215O and bolus inhalation of15O2. Cerebral blood flow, metabolic rate of oxygen, and arterial-to-capillary blood volume images were calculated using the three-weighted integral method. The images of cerebral blood volume were calculated using the bolus inhalation technique of C15O. The scans for cerebral blood flow and volume and metabolic rate of oxygen after acetazolamide challenge were performed at 10, 20, and 30 minutes after drug injection. The parametric images obtained under the two conditions at baseline and after acetazolamide administration were compared. The global and regional values for cerebral blood flow and volume and arterial-to-capillary blood volume increased significantly after acetazolamide administration compared with the baseline condition, whereas no difference in metabolic rate of oxygen was observed. Acetazolamide-induced increases in both blood flow and volume in the normal brain occurred as a vasodilatory reaction of functioning vessels. The increase in arterial-to-capillary blood volume made the major contribution to the cerebral blood volume increase, indicating that the raise in cerebral blood flow during the acetazolamide challenge is closely related to arterial-to-capillary vasomotor responsiveness.

Effect of Thrombolytic Therapy on Pulmonary-Capillary Blood Volume in Patients with Pulmonary Embolism

1980 ◽  
Vol 303 (15) ◽  
pp. 842-845 ◽  
Author(s):  
G. V. R. K. Sharma ◽  
Virginia A. Burleson ◽  
Arthur A. Sasahara ◽  
Barbara Roggeveen ◽  
Nazarene Mondello ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Thrombolytic Therapy ◽  
Blood Volume ◽  
Capillary Blood ◽  
Pulmonary Capillary ◽  
Capillary Blood Volume ◽  
Pulmonary Capillary Blood ◽  
Pulmonary Capillary Blood Volume

scholarly journals Optimizing the calculation of alveolar capillary conductance and pulmonary capillary blood volume with carbon monoxide and nitric oxide in humans

2009 ◽  
Vol 23 (S1) ◽  
Author(s):  
Maile Lani Ceridon ◽  
Jordan A Bilezikian ◽  
Thomas P Olson ◽  
Kenneth C Beck ◽  
Bruce D Johnson
Keyword(s):  
Nitric Oxide ◽  
Carbon Monoxide ◽  
Blood Volume ◽  
Capillary Blood ◽  
Pulmonary Capillary ◽  
Capillary Blood Volume ◽  
Pulmonary Capillary Blood ◽  
Pulmonary Capillary Blood Volume ◽  
Alveolar Capillary

Fractional changes in lung capillary blood volume and oxygen saturation during the cardiac cycle in rabbits

1997 ◽  
Vol 82 (5) ◽  
pp. 1668-1676 ◽  
Author(s):  
George P. Topulos ◽  
Nina R. Lipsky ◽  
John L. Lehr ◽  
Rick A. Rogers ◽  
James P. Butler
Keyword(s):  
Oxygen Saturation ◽  
Blood Volume ◽  
Lung Volume ◽  
Cardiac Cycle ◽  
Systemic Blood Pressure ◽  
Capillary Blood ◽  
Fractional Change ◽  
Pulmonary Capillary ◽  
Capillary Blood Volume ◽  
The Mean

Topulos, George P., Nina R. Lipsky, John L. Lehr, Rick A. Rogers, and James P. Butler. Fractional changes in lung capillary blood volume and oxygen saturation during the cardiac cycle in rabbits. J. Appl. Physiol. 82(5): 1668–1676, 1997.—Changes in local pulmonary capillary blood volume (Vc) and oxygen saturation (S) have been difficult to measure in live animals. By utilizing the differences in absorption of light at two wavelengths (650 and 800 nm), we estimated the fractional change in Vc and S during the course of the cardiac cycle in eight anesthetized, ventilated rabbits at low and high lung volumes. Observations were made of the pattern of diffusely backscattered light, from an ∼1-cm3 volume of lung illuminated with a point source placed on the pleural surface through a thoracotomy. At low lung volume, the fractional change in Vc was ∼13%, the change in S was ∼4.6%, and the mean S was close to 77%. The fluctuations in Vc and S lagged behind peak systemic blood pressure by about one-fifth and three-fifths of a cycle, respectively. At high lung volume, there were no important fluctuations in Vc or S, and the mean S was ∼82%. These results are consistent with fluctuations in pulmonary capillary pressure and gas exchange over the cardiac cycle, and with decreasing capillary compliance with increasing lung volume.

Indirect and direct capillary blood volume in anesthetized open-thorax cats.

1973 ◽  
Vol 34 (4) ◽  
pp. 452-459 ◽  
Author(s):  
C E Vreim ◽  
N C Staub
Keyword(s):  
Blood Volume ◽  
Capillary Blood ◽  
Capillary Blood Volume

Altered pulmonary capillary blood volume in childhood sickle cell disease

2020 ◽  
Vol 56 (6) ◽  
pp. 2000379
Author(s):  
Plamen Bokov ◽  
Priscilla Boizeau ◽  
Jade Pautrat ◽  
Florence Missud ◽  
Aissatou Ba ◽  
...  
Keyword(s):  
Sickle Cell Disease ◽  
Blood Volume ◽  
Sickle Cell ◽  
Capillary Blood ◽  
Cell Disease ◽  
Pulmonary Capillary ◽  
Capillary Blood Volume ◽  
Pulmonary Capillary Blood ◽  
Pulmonary Capillary Blood Volume
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