Transient Left Posterior Hemiblock during Prinzmetal's Angina Culminating in Acute Myocardial Infarction

Ortega-Carnicer, Julián; F, García-Nieto; Malillos, M.; Sánchez-Fernández, Ana

doi:10.1378/chest.84.5.638

Cited by 5 publications

(6 citation statements)

References 7 publications

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“…Furthermore, patients with CVS may present with transient intraventricular conduction disorders such as bifascicular block, left anterior or posterior hemiblock and right bundle branch block, although this is rare. [ 6 ] CVS is also associated with various arrhythmias such as sinus bradycardia, sinus arrest with or without junctional escape beats, ventricular tachycardia, ventricular fibrillation and asystole. [ 3 ] Right coronary artery vasospasms often cause bradyarryhthmias as in Case 1, while left anterior descending artery vasospasms are prone to tachyarrhythmias.…”

Section: Discussionmentioning

confidence: 99%

Cause of ST-segment elevation on electrocardiogram

Sia¹,

Soh²,

Poh³

et al. 2022

Singapore Medical Journal

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Section: Discussionmentioning

confidence: 99%

Cause of ST-segment elevation on electrocardiogram

Sia¹,

Soh²,

Poh³

et al. 2022

Singapore Medical Journal

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“…in acute inferior myocardial infarction was described by Ortega-Carnicer, Garcia-Nieto, Malillos, & Sanchez-Fernandez, (1983), acute anterolateral myocardial infarction (Ogawa, Kimura, Okada, Ogino, & Katayama, 1976) and induced by exercise in the setting of severe coronary artery disease (Bobba, Salerno, & Casari, 1972).…”

Section: (A) (B) (C) (D) (E) (F)mentioning

confidence: 97%

“…However, when we analyze the depth of the q wave in III, qIII in a > qIII in c, which indicates that the initial portions of ventricular activation are more significant in a than in c, consequently, a higher degree of LPFB in a in the initial phase and a higher degree in c in the midfinal phase. in acute inferior myocardial infarction was described by Ortega-Carnicer, Garcia-Nieto, Malillos, & Sanchez-Fernandez, (1983), acute anterolateral myocardial infarction (Ogawa, Kimura, Okada, Ogino, & Katayama, 1976) and induced by exercise in the setting of severe coronary artery disease (Bobba, Salerno, & Casari, 1972).…”

Section: Introductionmentioning

confidence: 97%

Electro‐vectorcardiographic demonstration of rate‐independent transient left posterior fascicular block

Pérez‐Riera

Barbosa‐Barros

Borges

et al. 2018

Noninvasive Electrocardiol

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Left posterior fascicular block (LPFB) is a rare intraventricular conduction disorder of rare occurrence, especially as an isolated entity. Its transient form is even rarer and maybe rate‐independent or rate‐dependent intermittent LPFB (phase 3 block, tachycardia‐dependent and phase 4 block or bradycardia‐dependent). We present a case of a young adult male whose baseline ECG/VCG showed the typical LPFB pattern. A treadmill stress test revealed rate‐independent intermittent LPFB with random occurrence. Imaging exams ruled out structural heart disease. To our knowledge, this is the first case in the literature of a rate‐independent intermittent LPFB with no underlying structural heart disease.

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“…presented a case of a 49-year-old man with transient LPFB during Prinzmetal's angina with STE in the inferior leads; subsequently LPFB reappeared associated with acute inferior MI. These authors believe that the very early changes in the QRS axis and ST segment are explained by three important changes in leads overlying the affected area: 1) the conspicuous STE associated with reciprocal changes; 2) the “injury”-related intramural (local) block; and 3) the increase of the R-wave voltage, also dependent of dromotropic disturbance caused by the “injury” [19]. Note: This prominent R wave could explain the LSFB observed in the proximal obstruction of the LAD before its first septal perforator branch.…”

Section: Epidemiologymentioning

confidence: 99%

Left posterior fascicular block, state-of-the-art review: A 2018 update

Pérez‐Riera

Barbosa‐Barros

Daminello‐Raimundo

et al. 2018

Indian Pacing and Electrophysiology Journal

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We conducted a review of the literature regarding epidemiology, clinical, electrocardiographic and vectorcardiographic aspects, classification, and differential diagnosis of left posterior fascicular block.Isolated left posterior fascicular block (LPFB) is an extremely rare finding both in the general population and in specific patient groups. In isolated LPFB 20% of the vectorcardiographic (VCG) QRS loop is located in the right inferior quadrant and when associated with right bundle branch block (RBBB) ≥40%.The diagnosis of LPFB should always consider the clinical aspects, because a definite diagnosis cannot be made in the presence of right ventricular hypertrophy (RVH) (chronic obstructive pulmonary disease (COPD)/emphysema), extensive lateral myocardial infarction (MI) or extremely vertical heart.Intermittent LPFBs are never complete blocks (transient or second degree LPFB) and even in the permanent ones, one cannot be sure that they are complete. When LPFB is associated with RBBB and acute inferior MI, PR interval prolongation is very frequent.

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Transient Left Posterior Hemiblock during Prinzmetal's Angina Culminating in Acute Myocardial Infarction

Cited by 5 publications

References 7 publications

Cause of ST-segment elevation on electrocardiogram

Cause of ST-segment elevation on electrocardiogram

Electro‐vectorcardiographic demonstration of rate‐independent transient left posterior fascicular block

Left posterior fascicular block, state-of-the-art review: A 2018 update

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