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Prolongation of the QT interval and post-extrasystolic augmentation of the TU-wave during emotional stress.

Batchvarov VN, Bajpai A, Behr E - Indian Pacing Electrophysiol J (2008)

Bottom Line: We present a case of a 25-year-old woman with multiple blackouts and no structural heart disease, with abnormal T-U waves and borderline QT interval on her resting electrocardiogram.During emotional stress she developed frequent monomorphic ventricular premature beats, with characteristic changes of the sinus complexes immediately following the premature beats, namely augmentation and greater degree of merging of the T and U waves and QTc interval prolongation.The changes alert about the possibility of congenital long QT syndrome, specifically genotype 2 or 1.

View Article: PubMed Central - PubMed

Affiliation: Division of Cardiac and Vascular Sciences, St. George's University of London, London, United Kingdom. vbatchva@sgul.ac.uk

ABSTRACT
We present a case of a 25-year-old woman with multiple blackouts and no structural heart disease, with abnormal T-U waves and borderline QT interval on her resting electrocardiogram. During emotional stress she developed frequent monomorphic ventricular premature beats, with characteristic changes of the sinus complexes immediately following the premature beats, namely augmentation and greater degree of merging of the T and U waves and QTc interval prolongation. The changes alert about the possibility of congenital long QT syndrome, specifically genotype 2 or 1.

No MeSH data available.


Related in: MedlinePlus

Resting ECG in a 25-year-old woman with daily blackouts. See the text for details
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Figure 1: Resting ECG in a 25-year-old woman with daily blackouts. See the text for details

Mentions: Figure 1 presents a resting electrocardiogram (ECG) recorded at 25 mm/sec, 10 mm/mV in a 25-year-old woman with a history of multiple blackouts. It shows sinus rhythm, heart rate of 80 beats per minute, notched T wave in lead V2, and abnormal augmented U wave in leads V2 to V4. The QT interval measured to the T-U nadir is 383 ms (manual measurement with on-screen calliper) and the QTc interval (correction by Bazett's formula) is borderline prolonged at 442 ms.


Prolongation of the QT interval and post-extrasystolic augmentation of the TU-wave during emotional stress.

Batchvarov VN, Bajpai A, Behr E - Indian Pacing Electrophysiol J (2008)

Resting ECG in a 25-year-old woman with daily blackouts. See the text for details
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2267900&req=5

Figure 1: Resting ECG in a 25-year-old woman with daily blackouts. See the text for details
Mentions: Figure 1 presents a resting electrocardiogram (ECG) recorded at 25 mm/sec, 10 mm/mV in a 25-year-old woman with a history of multiple blackouts. It shows sinus rhythm, heart rate of 80 beats per minute, notched T wave in lead V2, and abnormal augmented U wave in leads V2 to V4. The QT interval measured to the T-U nadir is 383 ms (manual measurement with on-screen calliper) and the QTc interval (correction by Bazett's formula) is borderline prolonged at 442 ms.

Bottom Line: We present a case of a 25-year-old woman with multiple blackouts and no structural heart disease, with abnormal T-U waves and borderline QT interval on her resting electrocardiogram.During emotional stress she developed frequent monomorphic ventricular premature beats, with characteristic changes of the sinus complexes immediately following the premature beats, namely augmentation and greater degree of merging of the T and U waves and QTc interval prolongation.The changes alert about the possibility of congenital long QT syndrome, specifically genotype 2 or 1.

View Article: PubMed Central - PubMed

Affiliation: Division of Cardiac and Vascular Sciences, St. George's University of London, London, United Kingdom. vbatchva@sgul.ac.uk

ABSTRACT
We present a case of a 25-year-old woman with multiple blackouts and no structural heart disease, with abnormal T-U waves and borderline QT interval on her resting electrocardiogram. During emotional stress she developed frequent monomorphic ventricular premature beats, with characteristic changes of the sinus complexes immediately following the premature beats, namely augmentation and greater degree of merging of the T and U waves and QTc interval prolongation. The changes alert about the possibility of congenital long QT syndrome, specifically genotype 2 or 1.

No MeSH data available.


Related in: MedlinePlus