The conduction velocity of the ulnar, median and peroneal nerves was studied from birth to adult age in normal infants, children and adolescents. The method allowed measurements of the conduction velocity of the thickest and fastest conducting motor nerve fibres. In newborns the conduction velocity of all 3 nerves was roughly half of that of adults. The value for the ulnar nerve increased rapidly during the first 3 years. After that age it rose only slightly and between adolescence and adult age there was a significant reduction. The value for the median nerve increased
Underlying causes for a low white blood cell count can range from benign disorders, such as vitamin deficiencies, to more serious blood diseases, such as leukemia or lymphoma. A truly low white blood cell count also puts you at higher risk for infections â typically bacterial infections.
Because a low white blood count can be life threatening, itâs a good idea to familiarize yourself with the symptoms and terminology. When you get your blood work, the lab will be looking for: 1  Leukopenia â A decrease in the total number of white blood cells, which can lead to a lowered white blood cell count. Leukopenia â A decrease in the total number of white blood cells, which can lead to a lowered white blood cell count. 2  Neutropenia â A decrease in the number of neutrophils, also creating a lower WBC. 3  Granulocytopenia â Another term that may be used for Neutropenia.