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| Year : 2006 | Volume
: 38
| Issue : 3 | Page : 215 |
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Evaluation of Q-T interval in healthy adult males
DH Nandal
Department of Pharmacology, B. J. Medical College, Pune - 411 001, India
Correspondence Address:
D H Nandal
Department of Pharmacology, B. J. Medical College, Pune - 411 001
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0253-7613.25816
How to cite this article:
Nandal D H. Evaluation of Q-T interval in healthy adult males. Indian J Pharmacol 2006;38:215 |
Indian Journal of Pharmacology is widely used and referred journal all over India. The methods used by research workers and published in the journal are therefore expected to be very clear and free from mistake of any kind.
The methods mentioned in research letter by Roy et al[1] however has serious mistakes.
1. The correct formula for QTc is:
QT Interval
QTc = -------------------
ÖRR Interval
The research letter mentions it as a simple RR interval. The root sign is missing.
2. QT dispersion is the difference between maximum and minimum QT-interval and NOT the difference between maximum and minimum heart rate (HR). The Bazett formula and calculation of QT dispersion published in IJP do not tally with those in standard books.
| References | |  |
| 1. | Roy P, Naidu MUR, Raju YSN, Ramesh Kumar T, Usha Rani P, Usha Kiran P, et al . Evaluation of Q-T interval in healthy adult males. Indian J Pharmacol 2006;38:135-6.  |
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