Straight Back Syndrome

2010 ◽  
pp. 615-619
Author(s):  
Edward C. Rosenow
Keyword(s):  
Chest Wall ◽  
Left Heart ◽  
Tape Measure ◽  
Full Inspiration

• On examination or on lateral CXR, sternum is not depressed • Measure chest wall expansion (with a tape measure) • Note vertical anterior ribs and straight left heart border • Difference between “senile emphysema” and rigid spine ∘ In “senile emphysema,” chest wall is fixed in near-full inspiration...

Pectus Excavatum

2010 ◽  
pp. 611-614
Author(s):  
Edward C. Rosenow
Keyword(s):  
Heart Disease ◽  
Chest Wall ◽  
Pectus Excavatum ◽  
Left Heart ◽  
Right Heart

• If you do not have a lateral CXR and examined patient through the gown, you would not know what this abnormality is if you have never seen it before • Shadow is depressed chest wall “on end” • Right heart border is not evident (arrow) because heart is pushed laterally to the left and straight left heart border mimics heart disease...

Reappraisal of extravascular lung thermal volume as a measure of pulmonary edema

1980 ◽  
Vol 48 (1) ◽  
pp. 120-129 ◽  
Author(s):  
W. H. Noble ◽  
J. C. Kay ◽  
K. H. Maret ◽  
G. Caskanette
Keyword(s):  
Pulmonary Edema ◽  
Chest Wall ◽  
Transit Time ◽  
Mean Transit Time ◽  
Pulmonary Arteries ◽  
Pericardial Fluid ◽  
Left Heart ◽  
Lung Water ◽  
Tissue Weight ◽  
Arteries And Veins

Previous papers have evaluated extravascular thermal volume of the lung (ETVL) as a measure of lung water by using median transit time (tmed) rather than the correct mean transit time (tmean). Calculation of ETVL using tmean (ETVLmean) and tmed (ETVLmed) gave an excellent relationship, ETVLmean = 1.48 ETVLmed - 0.74 (r = 0.99). This allowed us to calculate a new ratio of ETVLmean to PETW = 1.55 +/- 0.17, WHERE PETW is the postmortem value of pulmonary extravascular tissue weight. Thermistors were placed in dogs to determine the contribution of chest wall, pleural and pericardial fluid, left heart, bronchi, and lung gas to the ETVL measurement. We found ETVLmean greater than PETW because of thermal distributioninto left heart (18 +/- 2% of ETVL), bronchi (estimate 7% of ETVL), pulmonary arteries and veins (estimate 7% of ETVL), and perhaps a small portion of chest wall. We could not detect any portion of lung gas or pleural or pericardial effusions as a part of the ETVL measurement. When the distribution into left heart, bronchi, pulmonary arteries, and veins is removed ETVLmean/PETW = 1.07.

Continuous recording of pulmonary blood volume: pulmonary pressure and volume changes

1959 ◽  
Vol 197 (5) ◽  
pp. 959-962 ◽  
Author(s):  
Arthur W. Lindsey ◽  
Arthur C. Guyton
Keyword(s):  
Heart Failure ◽  
Pulmonary Artery ◽  
Chest Wall ◽  
Blood Volume ◽  
Right Heart Failure ◽  
Continuous Recording ◽  
Lung Field ◽  
Left Heart ◽  
Left Heart Failure ◽  
Pulmonary Blood Volume

A method for continuous recording of pulmonary blood volume in the intact animal has been devised, utilizing the detection of I131-tagged blood from a circumscribed portion of lung field. To rule out the interference of blood in the chest wall the counts per minute (cpm) obtained from the chest wall after removing the lung at the end of the experiment were subtracted from the recorded cpm throughout the experiment. The cpm from the chest wall were found to be stable, so that it was concluded that changes in total cpm were caused by changes in pulmonary blood volume. Constriction of the ascending aorta or pulmonary artery by previously placed loops of plastic tubing produced either right or left heart failure. When left heart failure was produced acutely, the pulmonary blood volume increased an average of 79.5%±6.1 S.E. in 23 dogs. Constriction of the pulmonary artery, producing acute right heart failure, decreased the pulmonary blood volume an average of 38%±2.3 S.E. in 23 dogs.

Sign in / Sign up

Export Citation Format

Share Document