Spatial, individual, and temporal variation of the high-frequency QRS amplitudes in the 12 standard electrocardiographic leads

Pettersson, Jonas; Carro, Elena; Edenbrandt, Lars; Maynard, Charles; Pahlm, Olle; Ringborn, Michael; Sörnmo, Leif; Warren, Stafford G.; Wagner, Galen S.

doi:10.1016/s0002-8703(00)90246-1

Cited by 43 publications

(14 citation statements)

References 21 publications

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“…This is not the same technique as previously used for recording of late potentials in that case to compensate for the ringing of the signal caused by the QRS complex. The filtering technique used here has previously been used in vivo to record high‐frequency components (Pettersson et al ., 1998, 2000). The root‐mean‐square value (RMS) was determined between two manually selected limits on either side of QRS using the signal with the high‐frequency components between 200 and 250 Hz, s (Fig.…”

Section: Methodsmentioning

confidence: 99%

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High‐frequency components in ECG analysed in guinea‐pig Langendorf preparations

Bennhagen

Sörnmo

Pesonen

et al. 2001

Clinical Physiology

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High-frequency components in ECG during global ischaemia were studied in isolated guinea-pig hearts perfused ad modum Langendorf. Electrocardiograph recordings were carried out from the epicardial surface both in normo- and low-flow perfusion. After bandpass filtering (5-500 Hz), signal-averaging, was undertaken. The high-frequency components either increased or decreased after low-flow perfusion was instituted. Root-mean-square voltage (RMS) of the depolarization signal correlated poorly with the signal amplitude, but highly with the first and second derivative, i.e. the velocity and the acceleration of the signal. It is concluded that high-frequency components are not pathological phenomena per se, but reflect the shape of the original electrocardiographic signal.

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Section: Methodsmentioning

confidence: 99%

“…Signal‐averaged high‐frequency QRS analysis with waveforms filtered between 150 and 250 Hz have previously been studied by several investigators (Simson et al ., 1983; Mor‐Avi et al ., 1987; Abboud, 1993; Pettersson et al ., 1998, 2000). There have been statements that high‐frequency components are markers of ischaemia.…”

Section: Introductionmentioning

confidence: 99%

High‐frequency components in ECG analysed in guinea‐pig Langendorf preparations

Bennhagen

Sörnmo

Pesonen

et al. 2001

Clinical Physiology

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“…The largest amplitudes are usually found in the anterior–posterior oriented leads V2–V4 and in the inferior–superior oriented leads II, aVF and III. The lowest amplitudes are found in the left–right oriented leads aVL, I, −aVR, V1, V5 and V6 (Pettersson et al. , 2000a).…”

Section: Basic Aspects Of Hf‐qrsmentioning

confidence: 99%

“…Dashed lines indicate the QRS duration. From Pettersson et al. (2000a) with permission from Elsevier.…”

Section: Introductionmentioning

confidence: 99%

High‐frequency QRS electrocardiogram

Trägårdh

Schlegel

2007

Clin Physio Funct Imaging

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The standard 12-lead electrocardiogram (ECG) is one of the most commonly used methods for diagnosing heart disease. Standard ECG is not always optimal, however, and new ECG methods can provide additional information. Analysis of high-frequency QRS components (HF-QRS) has been shown to increase the diagnostic performance of the ECG. Several investigators have studied HF-QRS in different cardiac conditions, including acute myocardial ischaemia and myocardial infarction, but more knowledge is needed about the characteristics of HF-QRS before clinicians can use it as an adjunct to standard ECG.

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“…The MALT meetings were scheduled annually near the Glasgow Western infirmary [5] where the database was located. Early participants in the STAFF meetings were from the laboratories of Pahlm and Sörnmo in Lund, Sweden on high frequency ECG [9][10][11], myocardial scintigraphy [12], and the "24-view ECG" [13]; from the laboratory of Laguna in Zaragoza, Spain, on quantitative ischemia indices [14,15]; Lander in Oklahoma City, USA on abnormal intra-QRS potentials [16]; and Rubel and Fayn in Lyon, France on the CAVIAR method for serial comparison of ECGs [17].…”

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confidence: 99%