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12 Possible Causes for Isolated Sinus Bradycardia

  • Sick Sinus Syndrome

    […] for the sustained sinus bradycardia.[ncbi.nlm.nih.gov] To our knowledge, this is the first case in the literature of isolated noncompaction of left ventricular myocardium with sustained bradycardia due to sick sinus syndrome.[ncbi.nlm.nih.gov] On postnatal electrocardiography, there was junctional escape rhythm due to profound sinus bradycardia, leading us to consider sick sinus syndrome.[ncbi.nlm.nih.gov]

  • Bradyarrhythmia

    FETAL BRADYCARDIAS BLOCKED ATRIAL BIGEMINY SINUS BRADYCARDIA  FETAL DISTRESS  CHD  LONG QT SYNDROME ATRIOVENTRICULAR BLOCK (70%)  ASSOCIATED WITH CHD (40-50%)  ISOLATED[slideshare.net] FETAL BRADYCARDIAS BLOCKED ATRIAL BIGEMINY SINUS BRADYCARDIA  FETAL DISTRESS  LONG QT SYNDROME  CHD ATRIOVENTRICULAR BLOCK (70%)  ASSOCIATED WITH CHD (40-50%)  ISOLATED[slideshare.net] FETAL BRADYCARDIAS BLOCKED ATRIAL BIGEMINY (secondary, most common) SINUS BRADYCARDIA  FETAL DISTRESS  CHD  LONG QT SYNDROME ATRIOVENTRICULAR BLOCK (70%)  ASSOCIATED[slideshare.net]

  • Bradycardia

    Isolated noncompaction of the left g ventricular myocardium with fetal sustained bradycardia due to sick sinus syndrome.[dictionary.cambridge.org] He was diagnosed with nodal bradycardia with polymorphic ventricular extra-systoles during the last six years.[dictionary.cambridge.org]

  • Long QT Syndrome

    Isolated sinus bradycardia with a QTc 490ms was found in 35: 33 had a KCNQ1 mutation There was one false positive and one false negative LQTS diagnosis.[ncbi.nlm.nih.gov]

  • Sinus Bradycardia

    Thirty-one patients had sick sinus syndrome, which was defined as a preprocedural history of symptomatic sinus bradycardia or pauses.[ncbi.nlm.nih.gov] Conduction disorders were associated with LQT2, whereas sinus bradycardia was associated with LQT1.[ncbi.nlm.nih.gov] Electrocardiographic findings that are common and training-related and that do not require additional evaluation are sinus bradycardia, 1 atrioventricular block (AVB), incomplete[drsvenkatesan.com]

  • Lenegre Disease

    bradycardia First-degree AV block Incomplete RBBB Early repolarization Isolated QRS voltage criteria for left ventricular hypertrophy T-wave inversion ST-segment depression[en.ecgpedia.org] Classification of abnormalities of the athlete’s electrocardiogram[ 9 ] Group 1: common and training-related ECG changes Group 2: uncommon and training-unrelated ECG changes Sinus[en.ecgpedia.org]

  • Ventricular Bigeminy

    Holter monitor testing for 24 h revealed a baseline rhythm of normal sinus with first degree atrioventricular block and intermittent episodes of sinus tachycardia, sinus bradycardia[ijo.in] […] and sinus arrhythmia, including isolated premature atrial complexes, premature ventricular complexes and ventricular bigeminy [ [Figure 3] a].[ijo.in]

  • AV Block Mobitz I

    The rhythm is always stated in the interpretation – for example, ‘sinus rhythm with a 1st degree AV block’ or ‘sinus bradycardia with a 1st degree AV block.’[mometrix.com] First degree heart block is often seen in highly trained athletes, and when occurring in isolation, the patient is usually asymptomatic & no treatment is necessary.[mometrix.com]

  • Left Ventricular Noncompaction

    Salerno JC, Chun TU, Rutledge JC (2008) Sinus bradycardia, Wolff–Parkinson–White, and left ventricular noncompaction: an embryologic connection?[oadoi.org] Sinus Bradycardia, Wolff Parkinson White, and Left Ventricular Noncompaction : An Embryologic Connection? Pediatr Cardiol 2007. 35.[ispub.com] Ritter M, Oechslin E, Sütsch G, Attenhofer C, Schneider J, Jenni R (1997) Isolated noncompaction of the myocardium in adults.[oadoi.org]

  • Extreme Fetal Immaturity

    Sustained bradycardia: usually related to blocked atrial bigeminy.[revespcardiol.org] Irregular rhythm: mostly atrial ectopies; and rarely isolated ventricular ectopies. These arrhythmias are usually self-limited and do not require any therapy. 2.[revespcardiol.org] Rare cases of sustained sinus bradycardia or complete AV block can also be observed, the latter in the context of either a complex cardiac malformation or more frequently[revespcardiol.org]

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