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10 Possible Causes for Lack of Atrial Excitability, Ventriculo-Atrial Regurgitation

  • Atrial Standstill

    […] of atrial excitability; absence of atrial wall movement at fluoroscopy; no mitral A wave on the echocardiogram.[ncbi.nlm.nih.gov] Electrocardiographic findings include bradycardia, ectopic supraventricular rhythms, lack of atrial excitability and absent P waves.[orpha.net] Electrocardiographic findings include bradycardia, ectopic supraventricular rhythms, lack of atrial excitability and absent P waves. ( Orphanet Rare Disease Ontology , Orphanet[amp.pharm.mssm.edu]

  • Atrial Arrhythmia

    Adult mice lacking DCT displayed normal cardiac development but an increased susceptibility to atrial arrhythmias.[ncbi.nlm.nih.gov] Cultured primary cardiac melanocyte-like cells were excitable, and those lacking DCT displayed prolonged repolarization with early afterdepolarizations.[ncbi.nlm.nih.gov] Furthermore, mice with mutations in the tyrosine kinase receptor Kit lacked cardiac melanocyte-like cells and did not develop atrial arrhythmias in the absence of DCT.[ncbi.nlm.nih.gov]

    Missing: Ventriculo-Atrial Regurgitation
  • Hypothyroidism

    Thyroid hormones have known effects on heart rate and cardiac excitability.[smw.ch] In contrast to the increased risk of atrial fibrillation in patients with excess thyroid hormones [ 27 ], evidence on this association in individuals with subclinical hypothyroidism[web.archive.org] Adequately powered RCTs examining a potential reduction of cardiovascular events through restoration of euthyroidism are lacking.[smw.ch]

    Missing: Ventriculo-Atrial Regurgitation
  • Corrected Transposition of the Great Vessels

    Isolated corrected transposition and corrected transposition with systemic ventriculo-atrial regurgitation give rise to tracings suggestive of systemic ventricular hypertrophy.Corrected[ncbi.nlm.nih.gov]

    Missing: Lack of Atrial Excitability
  • Sick Sinus Syndrome

    Uncommon AVNRT was confirmed by the lack of atrial pre-excitation during PSVT and para-Hisian pacing.[ncbi.nlm.nih.gov]

    Missing: Ventriculo-Atrial Regurgitation
  • Atrial Septal Defect

    In the majority of patients, TTE allows the evaluation of cardiac anatomy ( i.e. orientation and veno-atrial, atrioventricular and ventriculo-arterial connections), the morphology[dx.doi.org] […] of cardiac structures, ventricular and valvular function, the presence of shunt lesions and haemodynamic function ( e.g. severity of regurgitation and evaluation of shunts[dx.doi.org]

    Missing: Lack of Atrial Excitability
  • Wolff-Parkinson-White Syndrome

    Phases of Cardiac Activation PHASE 1 • Atrial activation- normal PHASE 2 • Ventricular pre-excitation • sinus activation occurs through both normal, anomalous pathway • anomalous[slideshare.net] […] pathway lacks AV nodal conduction delay • so sinus impulse conducted at a rapid rate • this enables ventricles to be activated or pre exited- short PR interval, delta wave[slideshare.net]

    Missing: Ventriculo-Atrial Regurgitation
  • Emery-Dreifuss Muscular Dystrophy Type 1

    Due to lack of excitability of the atrial myocardium, we changed the primary device type that had been planned for implantation.[ojs.kardiologiapolska.pl] Lack of excitability was consistent in all of the tested places in the right atrial endocardium and veins leading to the coronary sinus; it also did not depend on the scale[ojs.kardiologiapolska.pl] Delay (190 ms for pacing rhythm 100 imp/min) between pacing spike and atrial excitation A 35-year-old patient (DG, no. 17) received a pacemaker due to bradycardia (38/min[ojs.kardiologiapolska.pl]

    Missing: Ventriculo-Atrial Regurgitation
  • Endocardial Cushion Defect

    Shunt types and the valvular regurgitation were evaluated with color Doppler.[cardiovascularultrasound.biomedcentral.com] The characteristics of atrial and ventricular septal defects were assessed in 4 chamber apical and subcostal planes.[cardiovascularultrasound.biomedcentral.com] Ventriculo-arterial connections were studied in parasternal short axis at the level of great vessels and in the 5-chamber apical view.[cardiovascularultrasound.biomedcentral.com]

    Missing: Lack of Atrial Excitability
  • Atrioventricular Septal Defect

    Shunt types and the valvular regurgitation were evaluated with color Doppler.[cardiovascularultrasound.biomedcentral.com] The characteristics of atrial and ventricular septal defects were assessed in 4 chamber apical and subcostal planes.[cardiovascularultrasound.biomedcentral.com] Ventriculo-arterial connections were studied in parasternal short axis at the level of great vessels and in the 5-chamber apical view.[cardiovascularultrasound.biomedcentral.com]

    Missing: Lack of Atrial Excitability

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