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32 Possible Causes for Accentuated S1

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  • Mitral Valve Stenosis

    S1 Accentuation or Delay S1 is normally caused by closure of the mitral valve and is often accentuated or delayed in the context of mitral stenosis.[] Auscultation of heart sounds will reveal a loud, accentuated S1 early in mitral stenosis and soft S1 in severe mitral stenosis (see Heart Sounds Topic Review ).[] However, S1 accentuation and delay tend to become mild or disappear all together in late stages of the disease.[]

  • Atrial Myxoma

    Note loud S1 and S2. Additional late systolic sound is also present. This patient had severe pulmonary hypertension; that is why S2 was accentuated.[] Right Atrial Myxomas Right atrial myxomas are associated with a loud, early systolic, widely split S1 due to expression of the tumour from the right ventricle.[] A pulmonary ejection murmur with a delayed and accentuated pulmonic second sound may be heard. There may also be an early, late or prolonged diastolic murmur heard.[]

  • Chronic Bronchitis

    Chronic bronchitis is chronic non-specific inflammation of bronchial mucosa and its surrounding tissues due to infected or non-infected factors. Except other reasons causing chronic cough, it can be diagnosed from cough and expectoration for 3 months with a history over 2 years. It can be classified as"cough",[…][]

  • Thyrotoxic Heart Disease

    A 29-year-old woman at 34 weeks' gestation with uncontrolled hyperthyroidism and thyrotoxic heart disease was admitted to urgency Cesarean section. After preoperative sedation and good communication, low-dose spinal anesthesia (7.5 mg 0.5 % bupivacaine) combined with epidural anesthesia (6 ml 2 % lidocaine) was[…][]

  • Lown-Ganong-Levine Syndrome

    The basic anatomical substrate of enhanced A-V nodal conduction, manifesting or not as Lown-Ganong-Levine syndrome, is still a controversial issue. We describe the case of a 34-year-old man who presented episodes of ventricular fibrillation. Electrophysiological studies showed that the AH interval was 55 ms, and[…][]

  • Wolff-Parkinson-White Syndrome

    We report a case of ST elevation in right precordial leads compatible with type 1 Brugada syndrome following administration of propafenone in a patient with Wolff-Parkinson-White syndrome who was receiving lithium at concentrations within therapeutic levels. The mechanism of the electrocardiogram changes was[…][]

  • Mitral Valve Insufficiency

    Auscultation of heart sounds will reveal a loud, accentuated S1 early in mitral stenosis and soft S1 in severe mitral stenosis (see Heart Sounds Topic Review ).[] When pulmonary hypertension develops, the P2 component of the S2 heart sound will be accentuated.[] […] the mitral valve leaflets become significantly more calcified, their mobility declines and they are unable to be separated a great deal, resulting in a soft or even absent S1[]

  • Sinus Tachycardia

    The present study evaluated the clinical benefits of a new therapeutic method of radiofrequency catheter ablation (RFCA) using an EnSite system for inappropriate sinus tachycardia (IST). Six patients with debilitating IST underwent RFCA using EnSite. Using the beta-adrenergic blocker and agonist, the heart rate[…][]

  • Tricuspid Valve Stenosis

    This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed. (September 2017) ( Learn how and when to remove this template message ) Tricuspid Valve Stenosis Play media Video explanation of[…][]

  • Hyperkinetic Heart Syndrome

    Parasternal heave with normal S1 and accentuated P2.[] Accentuated S1 while S2 is narrowly or paradoxically split.[]

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