Purpose: Acid-base disturbances were investigated in patients with cirrhosis in relation to hemodynamic derangement to analyze the hyperventilatory effects and the metabolic compensation.
Methods: A total of 66 patients with cirrhosis and 44 controls were investigated during a hemodynamic study.
Results: Hyperventilatory hypocapnia was present in all patients with cirrhosis and progressed from Child class A to C (P<0.01). Arterial pH increased significantly from class A to C (P<0.001) and was correlated inversely to the mean arterial blood pressure (r=-0.30, P<0.02), systemic vascular resistance (r=-0.25, P<0.05), indocyanine green clearance (r=-0.37, P<0.005), and serum sodium (r=-0.38, P<0.002). Metabolic compensation was shown by a reduced standard base excess in all patients (P<0.001). Standard base excess contained elements related to changes in serum albumin, water dilution, and effects of unidentified ions (all P<0.001). A significant hepatic component in the acid-base disturbances could not be identified.
Conclusion: Hypocapnic alkalosis is related to disease severity and hyperdynamic systemic circulation in patients with cirrhosis. The metabolic compensation includes alterations in serum albumin and water retention that may result in a delicate acid-base balance in these patients.
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http://dx.doi.org/10.1097/MEG.0000000000000382 | DOI Listing |
Am J Physiol Lung Cell Mol Physiol
January 2025
Department of Medicine, Section of Pulmonary and Critical Care Medicine, The University of Chicago, Chicago, IL 60637.
Idiopathic pulmonary fibrosis is a fatal disease characterized by the TGF-β-dependent activation of lung fibroblasts, leading to excessive deposition of collagen proteins and progressive replacement of healthy lung with scar tissue. We and others have shown that TGF-β-mediated activation of the Mechanistic Target of Rapamycin Complex 1 (mTORC1) and downstream upregulation of Activating Transcription Factor 4 (ATF4) promote metabolic reprogramming in lung fibroblasts characterized by upregulation of the de synthesis of glycine, the most abundant amino acid found in collagen protein. Whether mTOR and ATF4 regulate other metabolic pathways in lung fibroblasts has not been explored.
View Article and Find Full Text PDFAbdom Radiol (NY)
January 2025
First Affiliated Hospital Zhejiang University, Hangzhou, China.
Purpose: This study aimed to investigate the usefulness of ultrasound-guided core-needle biopsy (US-CNB) for diagnosing type 1 AIP and evaluate the radiological outcomes following steroid therapy.
Materials And Methods: From January 2017 to June 2023, patients with pathology results containing "lymphoplasmacytic infiltration" and "fibrosis" were enrolled. The detection rate of level 1 histology by International Consensus Diagnostic Criteria (ICDC) and the contribution of US-CNB were assessed.
Tuberk Toraks
December 2024
Division of Pediatric Pulmonology, Department of Pediatrics, Ankara University Faculty of Medicine, Ankara, Türkiye.
Allergic bronchopulmonary aspergillosis (ABPA) is a complex hypersensitivity reaction observed in asthma as well as cystic fibrosis (CF) patients due to the colonization of the airways by Aspergillus fumigatus. While ABPA is most commonly observed in CF patients (2-9%), it is seen at a rate of 1-2% in patients diagnosed with asthma. ABPA is mostly seen in steroid dependent adult asthma patients and has rarely been reported in pediatric asthma patients.
View Article and Find Full Text PDFTuberk Toraks
December 2024
Department of Radiology, Tokat Gaziosmanpasa University Faculty of Medicine, Tokat, Türkiye.
Introduction: Diffuse pulmonary ossification (DPO) refers to the unusual formation of mature bone tissue within the lung parenchyma. It has been shown to be associated with a number of cardiac and chronic lung diseases. The relation between DPO and idiopathic pulmonary fibrosis (IPF) has been shown in the literature.
View Article and Find Full Text PDFTher Adv Respir Dis
January 2025
University of Texas Health San Antonio and the South Texas Veterans Health Care System, San Antonio, TX, USA.
Idiopathic pulmonary fibrosis (IPF) is often regarded as the archetypal progressive fibrosing interstitial lung disease (ILD). The term "progressive pulmonary fibrosis" (PPF) generally describes progressive lung fibrosis in an individual with an ILD other than IPF. Both IPF and PPF are associated with loss of lung function, worsening dyspnea and quality of life, and premature death.
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