Year: 2017 | Month: August | Volume 7 | Issue 4
Electrocardiographic Studies in Conscious Healthy Turtles
Abstract:
The present investigation was carried out on 37 healthy conscious turtles, for establishing normal reference values of electrocardiographic parameters in standard lead II. ECG complexes were consisted of very small to imperceptible P wave, comparatively appreciable R wave, no Q or S waves, and imperceptible to small upright T wave. Broadly turtles’ ECG was characterized by low amplitude wave forms, lower heart rate with longer periods of repolarization (QT interval). Heart rate varied from 22 to 48 beats per minute (32.27±1.14, median 32.0); P wave duration was 44.34±3.63 ms (range 10-80, median 40 ms) and amplitude was 0.055 ± 0.003 mV (range 0.025 to 0.1, median 0.05 mV), ‘R’ wave was comparatively conspicuous (mean 0.194 ± 0.002, range 0.025 to 0.7, median 0.25 mV), QRS pattern was positive and broad (mean 61.75 ±2.75, range 20-100, median 60 ms), ‘T’ wave was generally positive with a mean amplitude of 0.098 ± 0.0097 mV (range 0.05- 0.25, median 0.10 mV) and duration of 61.85 ± 3.66 ms (range 40-100, median 60 ms), Q-T interval was prolonged (mean 802.2±51.45, range 550-1280, median 800.0 ms) and longer R-R interval (mean 1859.31±59.26, range 1250-2727, median 1875). P and T waves were imperceptible in 14 and 10 turtles respectively.
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