The normal resting adult human heart rate ranges from 60â100 bpm. Tachycardia is a fast heart rate, defined as above 100 bpm at rest. Bradycardia is a slow heart rate, defined as below 60 bpm at rest.During sleep a slow heartbeat with rates around 40â50 BPM is common and is considered normal.he normal resting adult human heart rate ranges from 60â100 bpm. Tachycardia is a fast heart rate, defined as above 100 bpm at rest. Bradycardia is a slow heart rate, defined as below 60 bpm at rest.
â¢ The incidence of anisocoria in the newborn period is not well described. Additionally, the normal range of infant pupil size is not well defined. Eighty-eight healthy newborns were evaluated. Pupil size and color were obtained from photographs. The mean (Â±SD) pupil size was 3.8 Â± 0.8 mm. There was no statistical difference between right and left eyes.
Using the pupil-lometer, the mean pupil size in scotopic conditionswas 6.2 mm (with a range of 3.0 to 9.0 mm). 8 Schnitzler et al., 9 using an infra-red pupillometerunder scotopic light conditions, reported similarresults as the previous authors, with a mean pupildiameter of 6.16 mm Â±1.20 (SD) (range, 3.20 to9.00 mm).n addition, iris color does not have asignificant effect on the pupil size in the three testconditions.For non-impaired normal subjects, the presentDrug Evaluation and Classification program 6OPTOMETRY VOLUME 75/NUMBER 3/MARCH 2004 Figure 5 The frequency distribution of pupil sizes for three conditions.