Альтернация комплекса QRS - новое или хорошо забытое старое? Клинические наблюдения

Представлены три случая регистрации редкого электрокардиографического (ЭКГ) феномена - альтернации комплекса QRS (АQRS). АQRS выявлена у двух девочек 6 и 16 лет с третьим вариантом синдрома удлиненного интервала QT (LQT3) и у бессимптомной пациентки 13 лет с отягощенным семейным анамнезом по случаям внезапной смерти в молодом возрасте. АQRS регистрировалась в сочетании с макроскопической альтернацией зубца Т при холтеровском мониторировании и велоэргометрии. Дано определение АQRS и обсуждаются возможные механизмы и клиническое значение выявленного ЭКГ феномена.

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