Woldemar Mobitz and His 1924 Classification of Second-Degree Atrioventricular Block

Silverman, Mark E.; Upshaw, Charles B.; Lange, Hans

doi:10.1161/01.cir.0000140669.35049.34

Cited by 22 publications

(17 citation statements)

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“…ECG is the gold standard non-invasive test for the clinical diagnosis of cardiac arrhythmias [14] and heart block [15][16]. The use of ECG in gender determination in the young has not been previously demonstrated until inception of this study.…”

Section: Discussionmentioning

confidence: 90%

The Basis and Potentials of Ogunlade Sex Determination Electrocardiographic Score (OSDES) in Young Adults

Ogunlade

Asafa²

2015

CMR

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Abstract:The potentials of electrocardiogram (ECG) in sex determination in young adults have not been extensively explored despite the fact that ECG is one of the most frequently performed medical procedures. This study aimed at developing a simple electrocardiographic score system that could assist in sex determination in young adults. Patterns of ECG in male and female young adults were carefully analyzed and features that could be used to delineate the ECG into male and female patterns were selected as criteria for formulation of a simple scoring system called Ogunlade sex determination electrocardiographic score (OSDES).Components of OSDES were point scores in four electrocardiographic parameters; T wave configuration in V1 (1-3), ST segment in V2 or V3 (1-3), QRS rotation (1-3) and heart rate (1-3). The total minimum and maximum scores were 4 and 12 respectively. An individual with a total score of < 7 was identified as a female while an individual with a score ≥ 7 was identified a male. Thus, with OSDES, ECG can be classified into two; male pattern and female pattern for male and female respectively. This unique scoring system was tested among 474 healthy young adults (294 males and 180 females). Two hundred and eighty eight (288) of the 294 males were correctly identified by OSDES as males while 174 of the 180 females were correctly identified as females (k = 0.946, p < 0.001). The study defined male and female ECG patterns and concluded that ECG can be used to determine sex among young adult population.

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Section: Discussionmentioning

confidence: 90%

The Basis and Potentials of Ogunlade Sex Determination Electrocardiographic Score (OSDES) in Young Adults

Ogunlade

Asafa²

2015

CMR

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“…Plus rarement, il croît avec un allongement progressif des intervalles R-R. Enfin, l'incrément du P-R peut être faible (ex. : bloc 10/9 ou davantage) et peut passer inaperçu (intervalles R-R similaires en milieu de cycles), ou encore seul l'intervalle P-R du dernier complexe conduit augmente avec l'onde P bloquée [8]. En fait, le phénomène de Wenckebach typique n'est pas la règle des BAV II Mobitz I, ce qui entraîne parfois le diagnostic erroné de Mobitz II.…”

Section: Bav Du Deuxième Degré (Bav Ii) De Type Wenckebach (Ou Mobitz I)unclassified

“…Le P-R est normal (ou allongé) avant la pause et ne change pas après la pause (loi du tout ou rien). La pause incluant l'onde P bloquée est égale à deux cycles P-P. Ces critères diagnostiques sont rigoureux [8]. Les complexes QRS sont habituellement élar-gis (70 %), mais ils peuvent être fins (30 % des cas, bloc intrahissien) [5,9].…”

Section: Bav 2/1unclassified

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La conduction intracardiaque

Taboulet¹

2014

Ann. Fr. Med. Urgence

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Dans une première partie, nous avons décrit la physiopathologie de la conduction intracardiaque et les blocs supranodaux. Dans cette seconde partie, nous décrivons les blocs auriculoventriculaires intra-et infranodaux et les blocs intraventriculaires. Leur pronostic et leur traitement à court terme sont différents. Les blocs intranodaux sont de bon pronostic à court terme, même si la pose d'un stimulateur cardiaque est parfois nécessaire. Les blocs infranodaux sont de mauvais pronostic à court terme (syncope ou exceptionnellement mort subite), et un stimulateur cardiaque est générale-ment nécessaire. Un bloc de branche est un bloc intraventriculaire partiel de bon pronostic à court terme, sauf quand il est associé à d'autres blocs (bloc droit avec bloc fasciculaire postérieur gauche et bloc alternant ou plus rarement bloc gauche large avec prolongation de l'intervalle P-R). Les blocs intraventriculaires diffus témoignent d'une atteinte cardiaque sévère (ex. : myocardite) ou d'une agression systémique (hyperkaliémie, toxiques, hypothermie…), tandis que les blocs intraventriculaires focaux témoignent souvent d'une cardiopathie structurelle (séquelle de nécrose, fibrose, syndrome de Brugada, dysplasie…). L'identification précise d'un bloc intracardiaque est parfois difficile, mais elle est indispensable pour apprécier le pronostic à court terme et guider le traitement en médecine d'urgence.Mots clés Bloc auriculoventriculaire · Mobitz · Bloc de branche · Bloc fasciculaire · Syncope · Électrocardiogramme · ECG Abstract In the first part, we described the pathophysiology of intracardiac conduction and supranodal blocks. In this second part, we will describe the atrioventricular, intranodal and infranodal blocks. The prognosis and short-term treatment of each are different. Intranodal blocks have good short-term prognosis, even if a pacemaker is occasionally required. The infranodal blocks have an adverse short-term prognosis (syncope or, in unusual cases, sudden death) and a pacemaker is usually required. A bundle-branch block is a partial intraventricular block and has good short-term prognosis, unless it is combined with other blocks (right bundlebranch block with left posterior fascicular block, or alternating bundle-branch block or seldom large left bundle-branch block with prolongation of the P-R interval). Diffuse intraventricular blocks are a sign of severe diffuse cardiac disease (e.g. myocarditis), or of systemic illness (hyperkalaemia, drug toxicity, hypothermia, etc.), while the focal intraventricular blocks are often associated with a structural cardiomyopathy (sequelae of necrosis, fibrosis, dysplasia, Brugada syndrome, etc.). Precise identification of intracardiac block is sometimes difficult, but it is essential to assess the short-term outcome and enhance treatment in emergency medicine.

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“…1,2 This classification was based on his careful mathematical analysis and pathologic correlations and has proved to be a valuable and enduring addition to the lexicon of cardiology.…”

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confidence: 99%