Clinical Research Directory

Incorporating Healthy Living Strategies to Aid in Recovery After Acute Pulmonary Embolism

The purpose of the ERAsE-PE study is to determine whether two different healthy living strategies (along with anticoagulation) might aid in recovery after a patient is hospitalized for pulmonary embolism. Specifically, Investigators will compare changes in Cardiac Effort (#heart beats used during the 6-minute walk test/walk distance) measured after an 8-week program.

HOME-PE2 : Home Treatment Versus Hospitalization in Patients With Acute Pulmonary Embolism, no Clinical Severity Criteria, and Either Right Ventricular Dysfunction or Elevated Troponin: a Randomized Controlled Trial

This study (HOME-PE2) is a multicenter, randomized controlled trial comparing home treatment versus hospitalization in patients with acute pulmonary embolism (PE) who have no clinical severity criteria according to the Hestia rule but present either right ventricular dysfunction or elevated cardiac troponin levels. While outpatient management is considered safe for low-risk PE patients, the optimal management of patients without clinical severity but with signs of right ventricular strain or myocardial injury remains uncertain, and current guidelines are inconsistent. As a result, most of these patients are still hospitalized despite limited evidence supporting this approach. The primary objective is to assess whether home treatment is non-inferior to hospitalization in terms of safety, defined by the 7-day rate of adverse events according to the EARTH consensus. Secondary objectives include evaluation of net clinical benefit, quality of life, functional status, and healthcare resource utilization, as well as exploration of sex-related differences and cost-effectiveness. A total of 568 adult patients with confirmed PE will be randomized (1:1) to either home treatment with early discharge or standard hospitalization. Patients will be followed for 90 days.

A Real-World Study of EkoSonic Endovascular System in Chinese Populations With Acute Pulmonary Embolism

This study to collect the real-world clinical outcome data of EkoSonicTM Endovascular System in Chinese patients with acute pulmonary embolism during practical clinical care.

129Xe MRI Cardiopulmonary

The goal of this NIH-sponsored study is to characterize three biomarkers derived from 129Xe gas exchange MRI and to understand how they change in response to interventions.

Saline Contrast Electrical Impedance Tomography Method for Diagnosis of Acute Pulmonary Embolism

The goal of this observational study is to compare the consistency of saline contrast Electrical Impedance Tomography(EIT) method and Computed Tomography Pulmonary Angiography (CTPA) in diagnosing acute pulmonary embolism. The main question it aims to answer is: Can bedside saline contrast EIT method be used for the diagnosis of acute pulmonary embolism? The participants will undergo saline contrast EIT and CTPA examinations successively within 24 hours.

The Value of Novel Thrombus Markers in the Diagnosis and Treatment of Acute Pulmonary Embolism

In response to the high mortality rate of patients with acute pulmonary embolism (APE) and the fact that only a small proportion of deceased patients can receive correct diagnosis, this study will use a sensitive, non-invasive, and feasible new thrombus molecular marker (TAT/PIC/TM/t-PAIC) to detect and evaluate the activation of the coagulation and fibrinolysis systems and endothelial system damage in patients, in order to monitor the early diagnosis and treatment of APE, reduce mortality, and improve patient quality of life. Therefore, this study intends to include 200 newly diagnosed APE patients to evaluate the sensitivity and specificity of the single and combined application of novel thrombus molecular markers for APE diagnosis; Detect the biomarker results of patients at different time points before and after treatment, and evaluate their value in APE treatment monitoring; Track and follow up on patients after discharge to explore the prognostic value of biomarkers for APE.

Mechanical Thrombectomy for Acute Pulmonary Embolism

Research Objective: To prospectively compare the efficacy and safety of a pre-collaboratively developed ultra-thin PTFE minimally invasive thrombectomy system versus standard pharmacological therapy in patients with acute pulmonary embolism (PE), both administered on top of standard care. Research Content: Patients meeting all the following criteria will be enrolled: Aged 18-75 years (male or female) Clinically diagnosed with acute PE Right ventricular/left ventricular diameter ratio (RV/LV) ≥0.9 on computed tomographic pulmonary angiography (CTPA) Provision of voluntary written informed consent. Study Design: After confirming eligibility, subjects will be randomized at a 1:1 ratio into two groups: Innovative Device Group: Minimally invasive thrombectomy Standard Pharmacological Therapy Group: Pharmacological thrombolysis + anticoagulation Study Endpoints: Primary Efficacy Endpoint: Reduction in RV/LV ratio (measured by CTPA) from baseline to 48 hours post-treatment. Primary Safety Endpoint: Incidence of Major Adverse Events (MAEs) from baseline to 48 hours post-treatment, defined as: Procedure-related death Major bleeding (per VARC-2 criteria: life-threatening, disabling, or major bleeding) Treatment-related clinical deterioration, including: Unplanned mechanical ventilation Arterial hypotension (systolic blood pressure \<90 mmHg for \>1 hour or requiring vasopressors) or shock Cardiopulmonary resuscitation Sustained deterioration in oxygenation Emergency surgical embolectomy. Key Terminology Notes: RV/LV: Right Ventricular/Left Ventricular diameter ratio (standard medical abbreviation retained). VARC-2: Valve Academic Research Consortium-2 (internationally recognized bleeding criteria). PTFE: Polytetrafluoroethylene (material name preserved). MAE: Major Adverse Events (acronym defined at first use). Clinical deterioration: Explicitly specified with objective clinical indicators. This translation maintains scientific precision while adhering to international clinical trial reporting standards (ICH-GCP). The structure aligns with typical English-language study protocols for clarity and reproducibility.

Pilot Study to Evaluate the Role of EBUS in the Diagnosis of Acute PE in Critically Ill Patients

Acute pulmonary embolism (PE) in critically ill patients is common and often life threatening. The diagnosis of acute PE is often entertained in intensive care unit patients who develop unexplained hypotension or hypoxemia. Obtaining diagnostic confirmation of acute PE with a contrast-enhanced computed tomography of the chest (CT angiogram) may be difficult as patients are often too unstable for transport to the CT scanner or have renal insufficiency limiting the ability to receive intravenous contrast agents. Making or excluding the diagnosis of acute PE in these patients is critically important, as hemodynamic instability or right heart dysfunction, if due to PE, puts patients in the massive or submassive category and increased mortality risk. More aggressive therapies such as thrombolysis, extracorporeal membrane oxygenation or surgical embolectomy are often entertained. The investigators have previously described a case where endobronchial ultrasound (EBUS) was employed in the diagnostic algorithm of suspected acute PE and significantly affected treatment recommendations. The investigators believe that, in these patients, use of EBUS to assess for thrombotic occlusion of the central pulmonary vasculature can fill a critical gap in the decision tree for management of these patients. EBUS has become part of the diagnostic approach in a number of clinical situations, including the workup and staging of suspected malignancy, unexplained lymphadenopathy, and diagnosis of mediastinal and parabronchial masses. There is strong evidence that EBUS is equivalent to mediastinoscopy in the mediastinal staging of lung cancer. The number of physicians skilled and experienced in performance of EBUS has increased dramatically, and training in the procedure is frequently obtained in a pulmonary fellowship. To our knowledge, there have been no prospective studies that investigate the use of EBUS as a tool for the diagnosis of acute central pulmonary embolism in critically ill patients where obtaining diagnostic confirmation of this diagnosis with a contrast-enhanced computed tomography of the chest is not safe or feasible.

The Diagnostic Value of APTT/Fibrinogen Ratio in Pulmonary Embolism

From January 1, 2023 to December 30, 2023, patients who were suspected of pulmonary embolism and underwent CTPA examination at Nanyang Hospital of Southern Medical University were divided into pulmonary embolism group and non pulmonary embolism group. 1. Collect relevant data, including gender, age, primary disease, CTPA imaging and reports, BNP, troponin, electrocardiogram, cardiac ultrasound, PT, APTT, TT, fibrinogen, D-dimer, etc., and analyze demographic data, pulmonary embolism risk grading, APTT/fibrinogen ratio, and determine their cut-off values through statistical analysis of the two groups. 2. Follow up on the APTT/fibrinogen ratio after anticoagulation treatment and bleeding in the pulmonary embolism group.

Registry of Patients Prescribed Anticoagulation

The Gonda Vascular Center- Thrombophilia Clinic at Mayo Clinic in Rochester, Minnesota utilizes a standardized, guideline-directed, yet patient-oriented approach for treating patients diagnosed with venous thromboembolism (VTE).This study is the ongoing registry of clinical practice with standardized approach to patient assessment and therapy. As most of registries it does not have any definite number of recruited subjects or the date of study completion but provides anticipated number of recruited subjects and the time of anticipated enrolment which was provided only because of formal requirement related to structure of ClinicalTrials.gov website. This number will be updated and upgraded as we continue this registry. The rates of VTE recurrence, major bleeding, clinically relevant non-major bleeding (CRNMB) and survival in patients treated with anticoagulation for acute VTE are assessed during prospective observation. VTE cases include an acute deep vein thrombosis (DVT) of lower or upper extremities, splanchnic veins, gonadal, renal, cerebral veins thrombosis and pulmonary embolism (PE). Therapy includes the whole spectrum of FDA approved anticoagulants such as "classic" agents: warfarin and heparinoids and the newer direct oral anticoagulants (DOACs) such as rivaroxaban, dabigatran, apixaban, and edoxaban.

Systemic Thrombolysis Versus Catheter Directed Management for Acute Intermediate-high Pulmonary Embolism

To compare in hospital clinical outcomes and one month follow up of systemic thrombolysis versus catheter directed management for the treatment of acute intermediate- high risk pulmonary embolism (using streptokinase or tissue plasminogen activator (TPA) and catheter-based intervention group using Penumbra System).

Changes of Cardiopulmonary Function After Thrombolysis in Patients With Pulmonary Embolism

The investigators expect to enroll about 80-100 acute pulmonary embolism patients treated with thrombolysis in two hospitals. Dynamic changes of cardiopulmonary function after thrombolysis are detected to evaluate which indicators can quickly reflect the effectiveness of thrombolysis.

Pulmonary Embolism WArsaw REgistry

Initiated in January 2008, The PE-aWARE (Pulmonary Embolism WArsaw REgistry) is an on-going single-centre prospective observational study of patients with confirmed acute pulmonary embolism (APE). Extensive data on consecutive patients with pulmonary embolism is collected and stored. The main objective is to collect and provide information on patients' characteristics, management, and outcome with the purpose of decreasing mortality in APE, the occurrence of bleeding, and the frequency of thromboembolic recurrences. Moreover, the PE-aWARE registry serves as a basis for creating predictive scores for clinicians which aid patient management. The study endpoints comprise clinically recognized (and objectively confirmed) recurrences of PE, major and minor bleeding complications classified according to the International Society on Thrombosis and Haemostasis classification, need for cardiopulmonary resuscitation or catecholamines, and death.

Study of Patients Admitted to a Cardiac Intensive Care Unit With Acute CardioVascular Disease

This is a registry of the patients that are admitted to CICU and treated by the Scientific Staff of the 2nd Department of Cardiology, due to an acute cardiovascular disease (acute coronary syndrome, acute heart failure, arrhythmia, pulmonary embolism, cardiac tamponade etc) in order to investigate the clinical characteristics of the patients, their outcome, identify the factors that could predict the in-hospital mortality and compare the results with the predicted by established risk scores. Furthermore, the study will investigate the one-year mortality and also the major adverse cardiac events (MACE - acute myocardial infarction, stroke, or cardiovascular death) will be measured.

TwiFlow Thrombectomy Catheter sYstem for Acute Pulmonary Embolism (Twi-TYPE Study)

As a multicenter prospective single-arm clinical study, the investigators plan to recruit patients with acute pulmonary intravascular embolization from nationwide multi-center hospital organizations in China. The investigators use the production of transcatheter pulmonary artery bolt system which named 'TwiFlow Thrombectomy Catheter System' developed by the MorningSide (NanTong) medical device Co., LTD. on pulmonary artery interventional therapy to evaluating the efficacy and safety of this novel system in the treatment of patients with pulmonary intravascular embolization disease.