Publications by authors named "Yuan Hua Yang"

Background: Pleural effusion caused by fibrosing mediastinitis is rarely reported. This study aimed to summarize the clinical manifestations, diagnosis and treatment of transudative pleural effusion due to fibrosing mediastinitis.

Methods: Medical records and follow-up data of 7 patients with transudative pleural effusion due to fibrosing mediastinitis in Beijing Chaoyang Hospital between May 2014 and Feb 2018 were retrospectively analyzed.

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Background: Patients with pulmonary hypertension (PH) and chronic obstructive pulmonary disease (COPD) have an increased risk of disease exacerbation and decreased survival. We aimed to develop and validate a non-invasive nomogram for predicting COPD associated with severe PH and a prognostic nomogram for patients with COPD and concurrent PH (COPD-PH).

Methods: This study included 535 patients with COPD-PH from six hospitals.

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Pulmonary artery sarcoma (PAS) is a sporadic malignant tumor that mainly originates from the pulmonary arteries. However, PAS may also involve the right ventricular outflow tract (RVOT) and lead to obstruction, syncope, or sudden death. Early diagnosis and complete surgical resection are essential to prolong survival and improve the quality of life of patients with PAS.

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Article Synopsis
  • - This study analyzed 64 patients with Takayasu's arteritis and pulmonary artery involvement to differentiate between active and inactive disease stages and find better markers for disease activity.
  • - Results showed that active stage patients were younger and exhibited symptoms like fever and chest pain more frequently, alongside higher inflammatory markers and pulmonary artery wall thickening compared to inactive patients.
  • - The study concluded that chest pain, increased platelet count, and pulmonary artery wall thickening could serve as new indicators of disease activity, with active patients showing better right heart function and lower pulmonary vascular resistance.
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Background: Pulmonary endarterectomy (PEA) is the preferred treatment for CTEPH patients which can significantly improve symptoms and pulmonary hemodynamics. Therefore, this retrospective study evaluated the long-term outcomes after pulmonary endarterectomy (PEA) and analyze the predictors of long-term outcomes for chronic thromboembolic pulmonary hypertension (CTEPH).

Methods: From 2002-2020, 76 CTEPH patients successfully discharged after PEA in Beijing Chaoyang Hospital were followed-up by scheduled clinical visits or telephone interviews.

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Background: The feasibility and significance of imaging pulmonary artery (PA) remodeling with  Ga-fibroblast activating protein inhibitor (FAPI) in patients with chronic thromboembolic pulmonary hypertension (CTEPH) have not yet been addressed.

Methods:  Ga-FAPI-04 uptake in the PA and ascending artery was evaluated in 13 patients with CTEPH and 13 matched non-CTEPH controls. The correlations of PA  Ga-FAPI-04 uptake and remodeling parameters derived from right heart catheterization (RHC) were analyzed.

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Purpose: The aim of this study was to explore the association of cardiac fibroblast activation with clinical parameters and cardiovascular magnetic resonance (CMR) imaging parameters in patients with chronic thromboembolic pulmonary hypertension (CTEPH).

Methods: Thirteen CTEPH patients were prospectively enrolled. All of the patients underwent cardiac Gallium-labelled fibroblast activation protein inhibitor ( Ga-FAPI-04)-positron emission tomography/computed tomography (PET/CT), right heart catheterisation, and echocardiography, and 11 of them additionally underwent CMR.

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Objectives: A retrospective cohort study was designed to describe the clinical features and outcomes of pulmonary artery sarcoma (PAS).

Methods: Twenty-two (22) consecutive patients diagnosed with PAS by pathological examination were enrolled and followed up until they died or until January 2020. The medical records were retrospectively reviewed to evaluate the clinical characteristics, image findings, and outcomes.

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A definitive diagnosis of heparin-induced thrombocytopenia (HIT) is difficult to make, especially in patients undergoing cardiac surgery. In this retrospective cohort study, we assessed the platelet count trends and the response to fondaparinux in a population of patients of suspected HIT after pulmonary endarterectomy (PEA). Patients enrolled in this study were over the age of 18 years, and survived longer than 7 days after PEA between January 1, 2011 and December 31, 2015.

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Aims: To explore the value of 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in the detection of active pulmonary artery (PA) lesions in patients with Takayasu's arteritis (TA).

Methods And Results: Consecutive TA patients with PA involvement were prospectively recruited. Clinical activity was assessed according to the National Institutes of Health (NIH) criteria.

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Primary cardiac tumors are rare, but papillary fibroelastoma (PFE) is reportedly the most common form, which usually occurs on the left-side valves of the heart. However, PFE involving the tricuspid and pulmonary valves has also been documented. Although PFE is benign and seldom associated with valvular dysfunction, the associated embolic complications may lead to serious consequences.

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Figure c of the original version of this article was not converted properly. Correct figure is presented here. The original article has been corrected.

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Article Synopsis
  • The study investigates how well the right ventricle (RV) can adapt to increased stress during exercise in patients with precapillary pulmonary hypertension (PH) compared to healthy individuals.
  • This was done using exercise stress echocardiography (ESE) to measure changes in RV function at rest and during peak exercise, alongside cardiopulmonary tests.
  • Results showed that patients with precapillary PH had significantly reduced RV contractile reserve, which correlated with their maximum exercise capacity, indicating ESE could help assess their condition and guide treatment.
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To determine the value of F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in differentiating malignancy of pulmonary artery (PA) from pulmonary thromboembolism (PTE) based on a larger number of cases by pooling our cases and those from the literature. Consecutive patients with a PA lesion who had undergone F-FDG PET/CT in our hospital were retrospectively reviewed. Moreover, PubMed, Embase, and Medline were searched for literature reporting individual maximum standardised uptake value (SUV) of the malignant PA lesion and/or PTE.

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Background: Idiopathic pulmonary fibrosis (IPF) is an age-related and progressive interstitial lung disease. Up to 20% of cases of IPF cluster in families, genetic factors contribute significantly to the pathogenesis of the disease. This study aimed to explore the association between rare genetic variants and IPF in Chinese Han families.

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Article Synopsis
  • Acute pulmonary embolism is a serious condition with high mortality rates, and while haptoglobin is related to it, its diagnostic value is not well established.
  • The study analyzed serum proteins in patients with pulmonary embolism and identified eight proteins that were significantly altered, including haptoglobin, which was found to be overexpressed.
  • Haptoglobin levels in serum could serve as a useful diagnostic marker for pulmonary embolism, with a specific cut-off value showing reasonable sensitivity (62%) and specificity (83%).
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Background: Arteriovenous (AV) fistulae is an extremely rare disease of vascular malformation that involves fistulae formation between the systemic and pulmonary AV systems.

Case Representation: This case report describes a rare systemic-pulmonary AV fistulae of congenital origin, accompanied by pulmonary hypertension, as determined by aortic angiography and echocardiography.

Conclusion: Characteristics, diagnosis, and therapeutic approaches of this rare abnormality are explored.

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Pulmonary arterial smooth muscle cell (PASMC) migration plays a key role in vascular remodeling, which occurs during development of chronic thromboembolic pulmonary hypertension (CTEPH). Activation of the renin-angiotensin system (RAS) contributes to vascular remodeling observed in many diseases, including idiopathic pulmonary arterial hypertension. However, the role of RAS imbalance in CTEPH has not been characterized.

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Background: Clinical and imaging manifestations are similar in pulmonary artery sarcomas (PAS) and thromboembolic diseases, especially central chronic pulmonary thromboembolism (CPTE). The feasibility of utilising clinical imaging tools such as computed tomography (CT) and magnetic resonance imaging (MRI) for differential diagnosis of PAS and CPTE has not been fully explored, especially MRI.

Methods: Patients with PAS (n=18) and central CPTE (n=20) treated at our hospital between January 2013 and September 2016 were identified retrospectively.

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Background: Pulmonary hypertension (PH) can be caused by a fistula between the systemic and pulmonary arteries. Here, we report a case of PH due to multiple fistulas between systemic arteries and the right pulmonary artery where the ventilation/perfusion scan showed no perfusion in the right lung.

Methods: A 32-year-old male patient was hospitalised for community-acquired pneumonia.

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Background: The clinical significance of acute vasoreactivity testing (AVT) in patients with chronic thromboembolic pulmonary hypertension (CTEPH) remains unclear. We analyzed changes in hemodynamics and oxygenation dynamics indices after AVT in patients with CTEPH using patients with pulmonary arterial hypertension (PAH) as controls.

Methods: We analyzed retrospectively the results of AVT in 80 patients with PAH and 175 patients with CTEPH registered in the research database of Beijing Chao-Yang Hospital between October 2005 and August 2014.

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