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Original Research Open Access


H-reflex conduction velocity in babies from birth to 6 month of age

Aparna Debbarma, Priyanka Bhagat, Sarita Chowdhary, A N Gangopadhyay, S P Sharma, Udai Prakash.

Abstract
Background: The neurological assessment of newborn babies is clinically difficult due to its subjectivity. H-reflex and H-reflex conduction velocity (HRCV) are especially useful in pediatric nerve conduction studies. It evaluates proximal segment of nerve which includes Ia sensory afferent and motor component of the peripheral nerve.

Aims and Objectives: To assess the H-reflex latency (HRL) and HRCV in first 6 months of postnatal period and their correlation with other anthropometric variable such as weight, height, and head circumference.

Materials and Methods: 26 full-term babies between the age group from birth to 6 months of age were the study participants. HRL and HRCV were recorded in the right lower limbs at posterior tibial nerve-soleus muscle in all the babies.

Results: The values of HRCV had significantly increased at 3-6 months of age, and it was strongly correlated with HRL but weakly correlated with age of the babies.

Conclusion: The proximal nerve conduction velocity i.e. HRCV was significantly increased from birth time to 3-6 months of age due to rapid myelination and maturation of nerve fibers. This rise in velocity has also maintained the HRL to a comparable level in all the babies even with the increment of height. The HRL and HRCV could be useful as a complementary method along with clinical examination to assess functional integrity of the spinal cord.

Key words: Babies; H-reflex Latency; H-reflex Conduction Velocity; Peripheral Nerve; Proximal Conduction Velocity; Spinal Cord


 
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How to Cite this Article
Pubmed Style

Debbarma A, Bhagat P, Chowdhary S, Gangopadhyay AN, Sharma SP, Prakash U. H-reflex conduction velocity in babies from birth to 6 month of age. Natl J Physiol Pharm Pharmacol. 2017; 7(12): 1304-1308. doi:10.5455/njppp.2017.7.0621803072017


Web Style

Debbarma A, Bhagat P, Chowdhary S, Gangopadhyay AN, Sharma SP, Prakash U. H-reflex conduction velocity in babies from birth to 6 month of age. http://www.njppp.com/?mno=270215 [Access: December 18, 2017]. doi:10.5455/njppp.2017.7.0621803072017


AMA (American Medical Association) Style

Debbarma A, Bhagat P, Chowdhary S, Gangopadhyay AN, Sharma SP, Prakash U. H-reflex conduction velocity in babies from birth to 6 month of age. Natl J Physiol Pharm Pharmacol. 2017; 7(12): 1304-1308. doi:10.5455/njppp.2017.7.0621803072017



Vancouver/ICMJE Style

Debbarma A, Bhagat P, Chowdhary S, Gangopadhyay AN, Sharma SP, Prakash U. H-reflex conduction velocity in babies from birth to 6 month of age. Natl J Physiol Pharm Pharmacol. (2017), [cited December 18, 2017]; 7(12): 1304-1308. doi:10.5455/njppp.2017.7.0621803072017



Harvard Style

Debbarma, A., Bhagat, P., Chowdhary, S., Gangopadhyay, A. N., Sharma, S. P. & Prakash, U. (2017) H-reflex conduction velocity in babies from birth to 6 month of age. Natl J Physiol Pharm Pharmacol, 7 (12), 1304-1308. doi:10.5455/njppp.2017.7.0621803072017



Turabian Style

Debbarma, Aparna, Priyanka Bhagat, Sarita Chowdhary, A N Gangopadhyay, S P Sharma, and Udai Prakash. 2017. H-reflex conduction velocity in babies from birth to 6 month of age. National Journal of Physiology, Pharmacy and Pharmacology, 7 (12), 1304-1308. doi:10.5455/njppp.2017.7.0621803072017



Chicago Style

Debbarma, Aparna, Priyanka Bhagat, Sarita Chowdhary, A N Gangopadhyay, S P Sharma, and Udai Prakash. "H-reflex conduction velocity in babies from birth to 6 month of age." National Journal of Physiology, Pharmacy and Pharmacology 7 (2017), 1304-1308. doi:10.5455/njppp.2017.7.0621803072017



MLA (The Modern Language Association) Style

Debbarma, Aparna, Priyanka Bhagat, Sarita Chowdhary, A N Gangopadhyay, S P Sharma, and Udai Prakash. "H-reflex conduction velocity in babies from birth to 6 month of age." National Journal of Physiology, Pharmacy and Pharmacology 7.12 (2017), 1304-1308. Print. doi:10.5455/njppp.2017.7.0621803072017



APA (American Psychological Association) Style

Debbarma, A., Bhagat, P., Chowdhary, S., Gangopadhyay, A. N., Sharma, S. P. & Prakash, U. (2017) H-reflex conduction velocity in babies from birth to 6 month of age. National Journal of Physiology, Pharmacy and Pharmacology, 7 (12), 1304-1308. doi:10.5455/njppp.2017.7.0621803072017



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