Single-breath carbon monoxide transfer factor (DLCO) and diffusion coefficient (KCO) have been compared with vital capacity and total lung capacity in 119 subjects with scoliosis, 74 with idiopathic scoliosis, 32 with congenital osteogenic scoliosis and 13 with paralytic scoliosis. In each group mean values of DLCO were below, and for KCO above, predicted values. Furthermore, in each group, DLCO was correlated with lung volume and KCO inversely correlated with lung volume. The reduction in DLCO is probably due to the reduction in the total alveolar surface area and the increased values for KCO probably result from an increase in pulmonary capillary blood volume per unit alveolar volume at low lung volumes.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Combining Hyperpolarized Xe MR Imaging and Spectroscopy to Non-Invasively Estimate Pulmonary Vascular Resistance.
J Appl Physiol (1985)
January 2025
Medical Physics Graduate Program, Duke University, Durham, North Carolina, United States.
Hyperpolarized Xe MRI/MRS enables quantitative mapping of function in lung airspaces, membrane tissue, and red blood cells (RBCs) within the pulmonary capillaries. The RBC signal also exhibits cardiogenic oscillations that are reduced in pre-capillary pulmonary hypertension (PH). This effect is obscured in patients with concomitant defects in transfer from airspaces to RBCs, which increase RBC oscillation amplitudes.
View Article and Find Full Text PDFSex-based variations in breath-holding: oxygen storage and diving response among non-divers.
Front Physiol
January 2025
Department of Health Sciences, Environmental Physiology Group, Mid Sweden University, Östersund, Sweden.
Breath-hold diving performances are typically better in men than in women. However, it is still being determined if there are differences in the physiological responses to breath-holding between the sexes. We conducted a study comparing the maximum breath-hold duration, heart rate (HR) reduction, peripheral oxygen saturation (SpO), and spleen volume and contraction in 37 men and 44 women, all of whom had no prior breath-holding experience.
View Article and Find Full Text PDFResearch on detection methods of related substances and degradation products of the antitumor drug selpercatinib.
Front Chem
January 2025
Department of Oncology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Background: Selpercatinib, a selective RET kinase inhibitor, is approved for treating various cancers with RET gene mutations such as RET-rearranged thyroid cancer and non-small cell lung cancer. The presence of process-related and degradation impurities in its active pharmaceutical ingredient (API) can significantly affect its safety and effectiveness. However, research on detecting these impurities is limited.
View Article and Find Full Text PDFAltered lipid homeostasis and autophagy precipitate diffuse alveolar hemorrhage in murine lupus.
Autophagy Rep
July 2024
Division of Rheumatology, Allergy, & Clinical Immunology, Gainesville, FL 32610.
Abnormal autophagy regulation is implicated in lupus and other autoimmune diseases. We investigated autophagy in the murine pristane-induced lupus model. Pristane causes monocyte/macrophage-mediated endoplasmic reticulum (ER) stress in lung endothelial cells and diffuse alveolar hemorrhage (DAH) indistinguishable from DAH in lupus patients.
View Article and Find Full Text PDFDivision of the inferior pulmonary ligament during upper lobectomy does not improve postoperative pulmonary function: a systematic review and meta-analysis of observational studies and randomized controlled trials.
World J Surg Oncol
January 2025
Department of Cardiothoracic Surgery, Affiliated Hospital of Putian University, Putian, Fujian Province, China.
Background: Some surgeons routinely divide the inferior pulmonary ligament (IPL) during upper lobectomy. Nevertheless, the evidence remains inconclusive regarding whether dividing the IPL improves the postoperative pulmonary. This systematic review and meta-analysis aimed to assess the effects of inferior pulmonary ligament division (IPLD) during upper lobectomy.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!