MEASUREMENT OF TESTICULAR VOLUME IN HEALTHY NIGERIAN NEWBORNS AT IBADAN, NIGERIA USING THE PRADER ORCHIDOMETER
*OGUNDOYIN OO, OLULANA DI, LAWAL TA, AJAO A1
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ABSTRACT
Background: Determining the normal testicular volume in the newborn at birth is essential in the assessment of the degree of virilization of the external genitalia since abnormal development of the genitalia is closely related to the testicularvolumeinthemalenewborns.
Objectives: To establish a standard testicular volume (TV) for male newborn Nigerians using the Prader Orchidometer and determine the relationship between the testicular volume in the newborn and the age of the newborns at birth, thebirthweight, thematernalageatdeliveryandthematernalparity.
Methods: Prospective cross-sectional study of all term male neonates within 72 hours of birth from April 2013 to March 2014 in thethreelargestobstetriccentres(University College Hospital, Adeoyo Maternity Hospitaland Our Lady of Apostles Catholic Hospital) in Ibadan, Nigeria. They underwent clinical examination of the external genitalia and the testicularvolumesweremeasuredusingthe Praderorchidometer.
Results: A total of 867 male neonates were recruited into the study with a mean age of 2.89±6.21 days. The testicular volume ranged from 1 – 3 ml on both sides with a mean right testicular volume of 1.14±0.38 ml. There was a significant correlationbetweengestationalageaswellasbirthweightandthetesticularvolume(r= 0.146, p= 0.03).
Conclusion: This study has determined a normative value for testicular volume measured by Prader Orchidometer in newborns in a typical African population which could be used as a reference when evaluating neonates with patients with testicular abnormalities.
Key words: Neonatal testicular volume, Prader Orchidometer, Birth weight, Gestational age Nigeria
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