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. 2003 Jan 1;3(1):10-22.

Heart rate turbulence: a review

Mari A Watanabe  1
Affiliations

Heart rate turbulence: a review

Mari A Watanabe. Indian Pacing Electrophysiol J. .
No abstract available

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Figures

Figure 1
Figure 1
Example of RR interval sequences in one patient (thin lines), all aligned at the VPC. The thick line shows the average of the 60 sequences. Figure supplied courtesy of Dr. Georg Schmidt.
Figure 2
Figure 2
Schematic figure showing measurement of TO and TS. TO is the difference in the average of the 2 RR intervals preceding and succeeding the VPC/compensatory pause sequence expressed as a percentage. In the example shown, TO= - 4% from 100 x (960-1000)/1000. TS is the maximum of regression slopes computed for 5 consecutive RR sequences. In the example, the regression lines for beats 3~7 (slope 3) and beats 6~10 (slope 6) are shown, and TS was 36.4 because slope 3 had the largest slope of 36.4 ms/beat number among slopes 1 through 16.
Figure 3
Figure 3
Induced HRT. Panel A. RR intervals from a patient undergoing clinical electrophysiology study for supraventricular tachycardia. A stimulus was delivered at the RV apex after 20 sinus beats at various coupling intervals shorter than the baseline RR interval. Only the RR for the 2 beats before and 10 beats after the extrastimulus and compensatory pause are shown for each extrastimulus. Panel B. The RR data from panel A and pulse pressure (systolic - diastolic blood pressure) for the same beats are shown together. The pulse pressure was multiplied by 10 and shifted down by 800 mmHg so as not to overlap with the RR data.
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References

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