Journal of Clinical Neonatology

REVIEW ARTICLE
Year
: 2020  |  Volume : 9  |  Issue : 4  |  Page : 231--234

The Doppler ultrasound: A bedside tool to understand cerebral autoregulation in neonates


Iyer Harohallli Venkatesh 
 Consultant Neonatologist, Department of Neonatology, Manipal Hospital, Bangalore, Karnataka, India

Correspondence Address:
Dr. Iyer Harohallli Venkatesh
Manipal Hospital, Old Airport Road, Bangalore, Karnataka
India

Cerebral blood flow is a unique circulation in the human body, constituting around 15% of cardiac output with the brain comprising 2% of the total body weight. The cerebral autoregulation is maintained physiologically to keep the oxygen extraction constant from the brain cells. There are different ways to measure cerebral circulation, including near-infrared spectroscopy and diffuse optical spectroscopy. The limitation of using such equipment is because of the cost and nonavailability. The bedside Doppler ultrasound because of its easy availability it is used in the assessment of cerebral blood flow. There are many factors that contribute to cerebral blood flow. Understanding the variation in the cerebral blood flow by calculating the resistive index of play in the cerebral vessels will help the physician to understand the autoregulation – compensated or uncompensated.


How to cite this article:
Venkatesh IH. The Doppler ultrasound: A bedside tool to understand cerebral autoregulation in neonates.J Clin Neonatol 2020;9:231-234


How to cite this URL:
Venkatesh IH. The Doppler ultrasound: A bedside tool to understand cerebral autoregulation in neonates. J Clin Neonatol [serial online] 2020 [cited 2020 Dec 4 ];9:231-234
Available from: https://www.jcnonweb.com/article.asp?issn=2249-4847;year=2020;volume=9;issue=4;spage=231;epage=234;aulast=Venkatesh;type=0