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Left Ventricular Diastolic Dysfunction

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Most cited protocols related to «Left Ventricular Diastolic Dysfunction»

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Publication 2008
Angina Pectoris Asymptomatic Diseases Biological Markers Blood Vessel Brain Brain Metastases Cardiovascular System Cerebral Ventriculography Cerebrovascular Accident Chest Pain Clinical Reasoning Compassion Fatigue Congenital Abnormality Coronary Artery Disease Coronary Occlusion Diagnosis Dyspnea Echocardiography Edema Exercise Tests Heart Heart Ventricle Hospitalization Infection Interviewers Left Ventricular Diastolic Dysfunction Myocardial Infarction Myocardial Ischemia Neoplasms Outpatients Patients Physical Examination Physicians Pulmonary Edema Radiography, Thoracic Traumatic Brain Injury Wounds and Injuries
Patients were categorized into five stages (independent, not additive) depending on the presence or absence of extravalvular (extra aortic valve) cardiac damage or dysfunction as detected by transthoracic echocardiography before AVR—Stage 0: No other cardiac damage detected; Stage 1: LV damage as defined by presence of LV hypertrophy (LV mass index >95 g/m2 for women, >115 g/m2 for men),5 (link) severe LV diastolic dysfunction (E/e′ > 14),6 (link) or LV systolic dysfunction (LV ejection fraction <50%); Stage 2: LA or mitral valve damage or dysfunction as defined by the presence of an enlarged left atrium (>34 mL/m2), the presence of atrial fibrillation, or the presence of moderate or severe mitral regurgitation; Stage 3: Pulmonary artery vasculature or tricuspid valve damage or dysfunction as defined by the presence of systolic pulmonary hypertension (systolic pulmonary arterial pressure ≥60 mmHg) or the presence of moderate or severe tricuspid regurgitation7 (link),8 (link); and Stage 4: RV damage as defined by the presence of moderate or severe RV dysfunction (Figure 1).5 (link),6 (link),9 (link),10 (link) Patients were hierarchically classified in a given stage (worst stage) if at least one of the proposed criteria was met within that stage. These criteria were chosen based on their broad acceptance, prior validation as markers of abnormal cardiac function, their simplicity of acquisition, and their potential for future clinical external generalizability.1 (link),2 (link),5 (link),6 (link) The classification algorithm as well as the statistical models were defined fully a priori. Frailty was defined as the presence of at least two of the following criteria: (i) Katz index of independence in activities of daily living <6; (ii) 15-m walk time ≥24 s, (iii) serum albumin <3.8 g/dL, and (iv) grip strength <13 kg (women) or <26 kg (men).11 (link)
Transthoracic echocardiograms were obtained at baseline and follow-up using a uniform image acquisition protocol. All studies were analysed by a central core laboratory with quality and measurement methodology previously reported.12 (link),13 (link) All adverse events were adjudicated by an independent committee.
Publication 2017
Atrial Fibrillation Atrium, Left BAD protein, human Echocardiography Heart Left Ventricular Diastolic Dysfunction Left Ventricular Hypertrophy Left Ventricular Systolic Dysfunction Lung Mitral Valve Mitral Valve Insufficiency Patients Pulmonary Artery Pulmonary Hypertension Serum Albumin Systole Systolic Hypertension Systolic Pressure Valves, Aortic Valves, Tricuspid Woman
Median follow-up time was 4.0 years (interquartile range, 3.1-4.2 years), which resulted in 25 107 person-years of observation. A telephone interviewer contacted each participant every 6 to 9 months to inquire about all interim hospital admissions, cardiovascular outpatient diagnoses, and deaths. Two physicians reviewed each record for independent endpoint classification and assignment of event dates.
The endpoint for this study was symptomatic CHF. End point criteria were (a) CHF diagnosed by a physician and patient receiving medical treatment for CHF; (b) pulmonary edema/congestion seen on a chest radiograph; and (c) dilated ventricle or poor LV systolic function by echocardiography or ventriculography, or evidence of LV diastolic dysfunction by echocardiography. Participants who met only criterion a were considered to meet a “soft” criterion, and participants who met criteria b and c in addition to a physician diagnosis were classified as meeting “hard” criteria for CHF. For this analysis, participants who met either soft or hard criteria were considered as having incident CHF. An MI was diagnosed based on standard criteria consisting of combinations of symptoms, ECG findings, and cardiac biomarker levels.24 (link)
Publication 2008
Biological Markers Cardiovascular System Cerebral Ventriculography Echocardiography Heart Heart Ventricle Interviewers Left Ventricular Diastolic Dysfunction Outpatients Patients Physicians Pulmonary Edema Radiography, Thoracic Systole Vision
Incident hospitalized HF was ascertained yearly in WHI by medical record abstraction of self-report hospitalizations and classified by trained adjudicators using the standardized methodology as previously described.18 (link) Hospitalized HF requiring and/or occurring during hospitalization required physician diagnosis of new-onset or worsened congestive HF on the reported hospital admission and 1 or more of the following 4 criteria: HF diagnosed by physician and receiving medical treatment for HF, symptoms plus documentation in the current medical record of a history of an imaging procedure showing impaired left ventricular (LV) systolic or diastolic LV function, pulmonary edema/congestion on chest x-ray on the current admission, dilated ventricle(s) or “poor” LV or right ventricular (RV) function by echocardiography, radionuclide ventriculography, or other contrast ventriculography, or evidence of LV diastolic dysfunction. This method was found to have an excellent 79% agreement rate (kappa) comparing central adjudicated HF to local adjudication.18 (link)Interim CHD was defined by adjudicated hospitalization for myocardial infarction, PTCA, CABG, or angina after baseline and prior to the HF hospitalization.18 (link)
Publication 2012
Angina Pectoris Cerebral Ventriculography Coronary Artery Bypass Surgery Diastole Echocardiography Heart Ventricle Hospitalization Left Ventricles Left Ventricular Diastolic Dysfunction Left Ventricular Function Medical Imaging Myocardial Infarction Percutaneous Transluminal Coronary Angioplasty Physicians Pulmonary Edema Radiography, Thoracic Radionuclide Ventriculography Systole Ventricular Function, Right
Participants were re-examined approximately every other year after the baseline examination.13 (link) In addition to the study examinations, a telephone interviewer contacted each participant every 9–12 months to inquire about all interim hospital admissions, cardiovascular outpatient diagnoses and deaths. To verify self-reported diagnoses, copies were requested of all death certificates and medical records for all hospitalisations and outpatient cardiovascular diagnoses. Next-of-kin interviews for out-of-hospital cardiovascular deaths were obtained. We were successful in getting medical records on an estimated 98% of hospitalised cardiovascular events and information on 95% of outpatient cardiovascular diagnostic encounters. Follow-up telephone interviews were completed by 92% of living participants.12 (link) Trained personnel abstracted any hospital records suggesting possible cardiovascular events and transmitted these to the coordinating centre. These were then sent to two paired physicians (cardiologists or cardiovascular physician epidemiologists) for independent end point classification and assignment of incidence dates. Persisting disagreements were classified by the full review committee. The end point for this study was a composite of probable and definite HF. Definite or probable HF required HF symptoms, such as shortness of breath or oedema. In addition to symptoms, classification of probable HF required diagnosis of HF by a physician and a receipt for medical treatment for HF. Definite HF also required one or more objective criteria, such as pulmonary oedema/congestion by chest X-ray; dilated ventricle or poor LV function by echocardiography or ventriculography; or evidence of LV diastolic dysfunction.14 (link) For this analysis, we used incident definite or probable HF as a single entity without subdividing it into systolic or diastolic predominance.
Publication 2014
Cardiologists Cardiovascular System Cerebral Ventriculography Diagnosis Diastole Dyspnea Echocardiography Edema Epidemiologists Heart Ventricle Hospitalization Interviewers Left Ventricular Diastolic Dysfunction Outpatients Physical Examination Physicians Pulmonary Edema Radiography, Thoracic Systole

Most recents protocols related to «Left Ventricular Diastolic Dysfunction»

Between November 2020 and March 2022, adults who had been admitted to the emergency department of Hunan Provincial People’s Hospital were selected for the study. Patients with sepsis were included in the study within the first 24 hours after admission. The inclusion criteria of patients were based on Sepsis 3.0 in the Third International Consensus Conference. Sepsis was defined as life-threatening organ dysfunction induced by a dysregulated host response to infection and a Sequential Organ Failure Assessment (SOFA) score ≥ 2 (15 (link)). Sepsis-induced cardiac dysfunction was defined as impaired but reversible cardiac dysfunction under echocardiography, including LV systolic dysfunction, LV diastolic dysfunction, and right ventricle (RV) systolic dysfunction (16 (link)). Patients who met the exclusion criteria were as follows: (1) age < 18 years old; (2) pregnancy; and (3) history of heart disease, such as acute coronary ischaemia, LV insufficiency, dilated cardiomyopathy, hypertrophic cardiomyopathy, valvular heart disease, or recurrent arrhythmia (5 (link)). The study complied with the guidelines of the Declaration of Helsinki and the Conference for Coordination of Clinical Practice and was approved by the Ethics Committee of Hunan Provincial People’s Hospital. Informed consent was obtained from all participants.
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Publication 2023
Adult Cardiac Arrhythmia Cardiomyopathy, Dilated Conferences Echocardiography Emergencies Ethics Committees, Clinical Heart Diseases Heart Failure Hypertrophic Cardiomyopathy Infection Left Ventricular Diastolic Dysfunction Left Ventricular Systolic Dysfunction Myocardial Ischemia Patients Pregnancy Response, Immune Right Ventricular Dysfunction Septicemia Systole Valve Disease, Heart
We screened a population who needed LA access as a part of a therapeutic procedure for AF or supraventricular tachycardia (Figure 1). From July 2015 to November 2016, 264 patients with AF were enrolled. The control group consisted of 35 patients with re-entry tachycardia via a left-side accessory pathway or left-origin atrial tachycardia. Patients with (1) previous cardiac surgery or procedure history (n = 0), (2) LV systolic dysfunction (LVEF < 50%) or structural heart disease including ischemic lesion (n = 15), (3) moderate to severe mitral and aortic valve disease (n = 0), (4) recurrent triggers, that induced sustained arrhythmias interrupting the maintain sinus rhythm (SR) (n = 1), and (5) AF induction during right atrial pacing (n = 14 in AF group and n = 1 in control group) were excluded via a screening test. A total of 204 patients in the AF group and 34 patients in the control group were finally analyzed (male 77.1%, 54.0 ± 12.4 years old). In addition, the cohort was divided into two groups based on the criteria of E/e’ = 8 (median value), which is an echocardiographic LV diastolic dysfunction marker. We compared 144 patients with low E/e’ and 124 patients with high E/e’. All patients provided written informed consent for inclusion in the cohort. The research protocol complied with the principles of the Declaration of Helsinki and was approved by the Institutional Review Board of the Korea University Anam Hospital.
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Publication 2023
A 204 AF 14 Atrium, Left Atrium, Right Birth Bundles, Accessory Atrioventricular Cardiac Arrhythmia Echocardiography Ethics Committees, Research Heart Diseases Left Ventricular Diastolic Dysfunction Left Ventricular Systolic Dysfunction Males Patients Precipitating Factors Sinuses, Nasal Supraventricular Tachycardia Surgical Procedure, Cardiac Therapeutics Valve Disorder, Aortic
A total of 33 patients diagnosed with HFpEF were enrolled in this study, according to the latest guidelines for HF [16 (link)]. Transthoracic echocardiography was performed and blood samples were collected from each participant at the time of the outpatient visit or hospital admission. Patients were excluded if there was a presence of significant valvular disease. Patients were divided into three sub-groups of HFpEF depending on their clinical symptoms: HCM (n = 15), acute HFpEF (n = 9) and chronic HFpEF (n = 9). A control group (n = 40) of participants who were high-risk for CVD, but without left ventricular diastolic dysfunction, were also included in this study (Table 1).
All participants provided written consent prior to inclusion and blood collection. This study was conducted in accordance with the Declaration of Helsinki and ethical approval was obtained from individual hospitals and institutions.
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Publication 2023
BLOOD Echocardiography Left Ventricular Diastolic Dysfunction Outpatients Patients
In this study, 3 indices were calculated to evaluate LA structure remodeling, including LA volume index, LA sphericity index, and LA reverse remodeling (LARR). LA volume index, measured by 2‐dimensional echocardiography, is an accurate descriptor of LA volume and could reflect LV diastolic dysfunction.9 LA sphericity index is a novel index to assess the agreement between LA shape and a perfect sphere, which is more sensitive and changes earlier than LA volume index when exposed to varying stressors.10 It can be obtained by calculating the ratio of the transverse and longitudinal diameters of the left atrium. LARR is defined as a reduction >15% in the LA end‐systolic volume.11 Other relevant indicators, such as LA diameter, LA transverse diameter, LA superior–inferior diameter, and LA volume were also recorded.
Publication 2023
2D Echocardiography Atrium, Left Left Ventricular Diastolic Dysfunction Systole
Left atrial longitudinal strain analysis was obtained using automated speckle tracking software. The regions of interest (ROI) were generated automatically and LA endocardial border was manually adjusted when required.
LA phases definition and LAS values were measured from the LA longitudinal strain curve according to the European Association of Cardiovascular Imaging (EACVI)/American society of echocardiography (ASE) guidelines [5 ].
LAS analysis was calculated with the reference point set at the onset of the QRS complex of the superimposed ECG, two longitudinal deformation parameters are identified, positive peak atrial longitudinal strain at the end of the reservoir phase and a negative peak atrial contraction strain, before atrial contraction [6 (link)]. (Fig. 1.

ROC curve: Predictors of LV diastolic dysfunction post COVID-19

LA strain rate was measured during the early ventricular filling phase. LA stiffness was calculated as the ratio of E/eʹ to LA reservoir strain x100 [7 (link)].
Global LV systolic strain (GLS) was evaluated, and the software automatically traced the contour of the endocardium at apical three, four and two-chamber views. 2D GLS was analysed during aortic valve closure.
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Publication 2023
Atrium, Left Cardiovascular System Echocardiography Endocardium Europeans Heart Atrium Heart Ventricle Left Ventricular Diastolic Dysfunction Strains Systole Valves, Aortic

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More about "Left Ventricular Diastolic Dysfunction"

Left Ventricular Diastolic Dysfunction (LVDD) is a condition where the left ventricle of the heart has impaired ability to relax and fill with blood during the diastolic phase of the cardiac cycle.
This can lead to symptoms such as shortness of breath, fatigue, and edema.
LVDD is often associated with other cardiovascular conditions like hypertension, coronary artery disease, and heart failure.
PubCompare.ai is an AI-driven platform that can help researchers optimize their studies on LVDD.
The platform can locate the best protocols from literature, pre-prints, and patents, and use intelligent comparisons to enhance the reproducibility and accuracy of research.
Researchers can leverage the power of AI to streamline their LVDD studies and uncover the most effective solutions.
In addition to the PubCompare.ai platform, researchers may also utilize various echocardiography systems, such as Vivid 7, Vivid E9, Vivid 9, EchoPAC, Matrix iE33, and Vivid E95, to assess and diagnose LVDD.
These systems provide advanced imaging capabilities and quantitative analysis tools that can help clinicians and researchers better understand the underlying mechanisms and characteristics of LVDD.
Furthermore, researchers may employ statistical software like SPSS version 18.0, SAS statistical software, and JMP 8.0 to analyze the data collected from their LVDD studies.
These tools can help researchers identify patterns, trends, and relationships within the data, and draw meaningful conclusions to inform their research and treatment strategies.
By harnessing the power of AI, advanced imaging technologies, and robust statistical analysis, researchers can optimize their investigations into Left Ventricular Diastolic Dysfunction and uncover the most effective solutions to improve patient outcomes.