• Disease
  • Mitral
  • Mitral Regurgitation
  • Abdul Jamil Tajik

    Prominent publications by ABDUL JAMIL TAJIK

    KOL Index score: 16840

    OBJECTIVES: To determine the influence of jet eccentricity and mechanism of mitral regurgitation, we examined 1) the relation between jet extent and severity of mitral regurgitation, and 2) the use of Doppler color flow imaging for quantitation of mitral regurgitation.

    BACKGROUND: Doppler color flow imaging is widely used to assess mitral regurgitation. However, whether, how and in which subgroups it can quantify regurgitation remain controversial.

    METHODS: In 80 patients with mitral ...

    Also Ranks for: Color Flow |  jet area |  regurgitant volume |  mitral regurgitation |  quantitative doppler
    KOL Index score: 15287

    It has previously been demonstrated that predictable changes occur in mitral flow velocities under different loading conditions. The purpose of this study was to relate changes in pulmonary venous and mitral flow velocities during different loading conditions as assessed by transesophageal echocardiography in the operating room. Nineteen patients had measurements of hemodynamics, that is, mitral and pulmonary vein flow velocities during the control situation, a decrease in preload by ...

    Also Ranks for: Pulmonary Vein |  loading conditions |  mitral flow |  deceleration time |  increase preload
    KOL Index score: 15234

    BACKGROUND: Myocardial late gadolinium enhancement (LGE) on contrast-enhanced magnetic resonance imaging (CE-MRI) of patients with hypertrophic cardiomyopathy (HCM) has been suggested to represent intramyocardial fibrosis and, as such, an adverse prognostic risk factor. We evaluated the characteristics of LGE on CE-MRI and explored whether LGE among patients with HCM was associated with genetic testing, severe symptoms, ventricular arrhythmias, or sudden cardiac death (SCD).


    Also Ranks for: Patients Lge |  resonance imaging |  gadolinium enhancement |  clinical significance |  scd hcm
    KOL Index score: 14778

    OBJECTIVES: The study determined, in a population-based setting, whether dilatation of the thoracic aorta is an atherosclerosis-related process.

    BACKGROUND: The role of atherosclerosis in thoracic aortic dilatation and aneurysm formation is poorly defined.

    METHODS: The dimensions of the thoracic aorta were measured with transesophageal echocardiography in 373 subjects participating in a population-based study (median age 66 years; 52% men). The associations between clinical and ...

    Also Ranks for: Aortic Dilatation |  aneurysm formation |  thoracic aorta |  gender bsa |  risk factors atherosclerosis
    KOL Index score: 14315

    OBJECTIVES: This study sought to describe the acute morphologic differences that result from septal myectomy and alcohol septal ablation using cardiac magnetic resonance (CMR) imaging.

    BACKGROUND: Surgical septal myectomy and alcohol septal ablation relieve left ventricular outflow tract obstruction in severely symptomatic patients with hypertrophic cardiomyopathy (HCM).

    METHODS: Cine and contrast-enhanced CMR images were obtained in HCM patients before and after septal myectomy (n = 24) ...

    Also Ranks for: Septal Ablation |  magnetic resonance |  basal septum |  myectomy alcohol |  hypertrophic obstructive
    KOL Index score: 14188

    BACKGROUND: Quantitation of valvular regurgitation remains a challenge. The accuracy of quantitative Doppler is controversial, and its ability to measure regurgitant volume is unknown; therefore, it is not widely used.

    METHODS AND RESULTS: In 120 patients (20 without regurgitation, 19 with aortic regurgitation, and 81 with mitral regurgitation), the stroke volume through the mitral annulus and left ventricular outflow tract were measured using pulsed-wave Doppler concurrently with left ...

    Also Ranks for: Quantitative Doppler |  valvular regurgitation |  regurgitant volume |  patients mitral |  ventricular stroke
    KOL Index score: 14096

    OBJECTIVES: We sought to determine the frequency and phenotype of mutations in myosin binding protein C (MYBPC3) in a large outpatient cohort of patients with hypertrophic cardiomyopathy (HCM) seen at our tertiary referral center.

    BACKGROUND: Mutations in MYBPC3 are one of the most frequent genetic causes of HCM and have been associated with variable onset of disease and prognosis. However, the frequency of mutations and associated clinical presentation have not been established in a ...

    Also Ranks for: Patients Hcm |  mutations mybpc3 |  compound heterozygosity |  myosin binding protein |  clinical presentation
    KOL Index score: 14067

    BACKGROUND: Mitral valve repair has been suggested as providing a better postoperative outcome than valve replacement for mitral regurgitation, but this impression has been obscured by differences in baseline characteristics and has not been confirmed in multivariate analyses.

    METHODS AND RESULTS: The outcomes in 195 patients with valve repair and 214 with replacement for organic mitral regurgitation were compared using multivariate analysis. All patients had preoperative ...

    Also Ranks for: Valve Repair |  multivariate analysis |  mitral regurgitation |  surgery patients |  late survival
    KOL Index score: 13894

    This study evaluated the diagnostic role of early diastolic mitral annular velocity (E') by tissue Doppler echocardiography for differentiating constrictive pericarditis from restrictive cardiomyopathy (primary restrictive cardiomyopathy and cardiac amyloidosis). The study group consisted of 75 patients (53 men, 22 women; mean age 62 years, range 27 to 87). Of these, 23 patients had surgically confirmed constrictive pericarditis, 38 had biopsy-proved systemic amyloidosis and typical ...

    Also Ranks for: Constrictive Pericarditis |  restrictive cardiomyopathy |  tissue doppler echocardiography |  cardiac amyloidosis |  mitral annular
    KOL Index score: 13745

    OBJECTIVE: This study was conducted to determine whether Doppler recording of superior vena cava flow velocities can differentiate chronic obstructive pulmonary disease from constrictive pericarditis in patients with a respiratory variation of > or = 25% in mitral inflow E velocity.

    BACKGROUND: Although respiratory variation (> or = 25%) in mitral E velocity is the main diagnostic criterion for constrictive pericarditis by Doppler echocardiography, it can also be present in chronic ...

    Also Ranks for: Constrictive Pericarditis |  superior vena |  respiratory variation |  pulmonary disease |  doppler velocities
    KOL Index score: 13645

    OBJECTIVES: This study sought to analyze the determinants of pulmonary hypertension in patients with left ventricular dysfunction.

    BACKGROUND: Pulmonary hypertension in patients with left ventricular dysfunction is a predictor of poor outcome. The independent role of cardiac functional abnormalities in the genesis of pulmonary hypertension is unclear.

    METHODS: In 102 consecutive patients with primary left ventricular dysfunction (ejection fraction < 50%), systolic pulmonary artery ...

    Also Ranks for: Ventricular Dysfunction |  pulmonary hypertension |  mitral regurgitation patients |  ejection fraction |  doppler echocardiography
    KOL Index score: 13599

    Left ventricular filling pressures can be estimated reliably by combining mitral inflow early diastolic velocity (E) and annulus velocity (E'). An increased E/E' ratio reflects elevated filling pressures and may be useful in assessing an abnormal increase in filling pressures for patients with diastolic dysfunction. The purpose of this study was to evaluate the feasibility of supine bicycle exercise Doppler echocardiography for assessing left ventricular diastolic pressure during ...

    Also Ranks for: Doppler Echocardiography |  diastolic dysfunction |  supine bicycle |  ventricular function |  exercise patients
    KOL Index score: 13567

    BACKGROUND: Left ventricular dysfunction is a frequent cause of death after successful surgical repair of mitral regurgitation. The role of preoperative echocardiographic left ventricular variables in the prediction of postoperative survival and thus their clinical implications remain uncertain.

    METHODS AND RESULTS: The survival of 409 patients operated on between 1980 and 1989 for pure, isolated, organic mitral regurgitation and with a preoperative echocardiogram (within 6 months of ...

    Also Ranks for: Surgical Correction |  mitral regurgitation |  late survival |  operative mortality |  10 years
    KOL Index score: 13543

    OBJECTIVES: This study attempted to determine the incidence, prognosis and predictability of postoperative left ventricular dysfunction in patients undergoing correction of mitral regurgitation.

    BACKGROUND: Left ventricular function in patients with mitral regurgitation is altered by loading conditions and is difficult to assess. Predictive value of preoperative variables on postoperative left ventricular function and the role of echocardiography are uncertain.

    METHODS: In 266 patients ...

    Also Ranks for: Mitral Regurgitation |  ventricular function |  ejection fraction |  echocardiographic prediction |  systolic diameter
    KOL Index score: 13370

    OBJECTIVES: The purpose of this study was to determine the feasibility, relation to other methods and significance of the effective regurgitant orifice area measurement.

    BACKGROUND: Assessment of the severity of valvular regurgitation (effective regurgitant orifice area) has not been implemented in clinical practice but can be made by Doppler echocardiography.

    METHODS: Effective regurgitant orifice area was calculated by Doppler echocardiography as the ratio of regurgitant ...

    Also Ranks for: Regurgitant Orifice |  valvular regurgitation |  doppler echocardiography |  valve mitral |  volume overload


    ABDUL JAMIL TAJIK: Influence Statistics

    Sample of concepts for which ABDUL JAMIL TAJIK is among the top experts in the world.
    Concept World rank
    atl closure patient #1
    noninvasive doppler doppler #1
    100 improvement improvement #1
    repair partial canal #1
    12 normal values #1
    intracavitary obstruction hypotension #1
    mitral regurgitation 95 #1
    severe curvilinear relationship #1
    visualization transesophageal echocardiography #1
    accuracy pitfalls #1
    global transmural #1
    severity pht #1
    quantitative society #1
    doppler echocardiographic #1
    severe vcw #1
    soce hvfs #1
    mitral regurgitation correlations #1
    differential humans pericarditis #1
    aortic stenosis jet #1
    mitral regurgitation regurgitation #1
    mlvdp doppler variables #1
    atrial septum visualization #1
    quantitative texture amyloid #1
    fraction aortic regurgitation #1
    gls lvt #1
    systolic pvf reversal #1
    doppler techniques children #1
    echocardiographic texture #1
    morphological findings pathophysiology #1
    fenestration coronary sinus #1
    patients preoperative catheterization #1
    lvnc young adult #1
    19 doubleinlet ventricle #1
    avc cad #1
    doppler ultrasound methods #1
    implementation clinical applications #1
    7 endsystolic volume #1
    019 cm2 #1
    process assessment cardiomyopathy #1
    diastolic function factors #1
    area 40 mm2 #1
    primary diagnosis catheterization #1
    variables volume overload #1
    videodensitometric quantitation #1
    progression 74 patients #1
    influence jet eccentricity #1
    human ventricular fibroblasts #1
    catheterization doppler #1
    planes cardiac events #1
    avc score ebct #1

    Key People For Mitral Regurgitation

    Top KOLs in the world
    Maurice E Enriquez‐Sarano
    mitral regurgitation aortic valve heart failure
    mitral regurgitation constrictive pericarditis doppler echocardiography
    Robert Aaron Levine
    mitral valve tricuspid regurgitation myocardial infarction
    Paul Arthur Grayburn
    mitral regurgitation heart failure aortic valve
    Elyse D Foster
    ventricular function mitral regurgitation transesophageal echocardiography
    aortic stenosis valvular heart disease mitral regurgitation

    ABDUL JAMIL TAJIK:Expert Impact

    Concepts for whichABDUL JAMIL TAJIKhas direct influence:Mitral regurgitation,  Doppler echocardiography,  Constrictive pericarditis,  Hypertrophic cardiomyopathy,  Transesophageal echocardiography,  Aortic stenosis,  Aortic valve,  Aortic regurgitation.


    Concepts related to the work of other authors for whichfor which ABDUL JAMIL TAJIK has influence:Heart failure,  Ventricular function,  Aortic valve,  Atrial fibrillation,  Mitral regurgitation,  Hypertrophic cardiomyopathy,  Myocardial infarction.



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