Sucking Reflex

Original Editor - Muskan Rastogi Top Contributors - Muskan Rastogi

Introduction[edit | edit source]

The sucking reflex is said to be seen in utero by the third month of fetal life so that by the end of gestation it can be put to use.[1]

It is considered an appropriate feeding response in newborns.[2]

The rooting reflex and sucking reflex work together in order to feed the infant.[3]

Incidence and Prevalence[edit | edit source]

In a research conducted by Paulson and Gottlieb, 53% of adult patients showed the presence of a sucking reflex.[4]

In a study conducted by Brown et al, 240 healthy young adults were studied in which they found that 3% of the population had a sucking reflex.[5]

Stimulus[edit | edit source]

Stroking the central part above the upper lip.[6] OR Stimulation of the palate with the help of the nipple during breastfeeding.[3]

Response[edit | edit source]

Pursing the lips [6]around the inserted object ( finger or nipple)

Duration[edit | edit source]

Is seen from 13-16 weeks during gestation and disintegrates by 12 months of age.[7]

Clinical Relevance[edit | edit source]

  • The presence of sucking pads around the vermillion border of the lips of infants is associated with an effective sucking reflex.[8]
  • The newborn babies of smoking mothers tend to show delayed sucking responses.[9]
  • Sucking and swallowing are present in utero from 13-16 weeks and these mechanisms are considered an important precursor to respiration and deglutition.[7]
  • Breastfeeding commences with the help of both sucking and rooting reflex followed by swallowing reflex.[3]

References[edit | edit source]

  1. Smith WL, Erenberg A, Nowak A, Franken Jr EA. Physiology of sucking in the normal term infant using real-time US. Radiology. 1985 Aug;156(2):379-81.
  2. Schott JM, Rossor MN. The grasp and other primitive reflexes. Journal of Neurology, Neurosurgery & Psychiatry. 2003 May 1;74(5):558-60.
  3. 3.0 3.1 3.2 Woolridge MW. The ‘anatomy’of infant sucking. Midwifery. 1986 Dec 1;2(4):164-71.
  4. PAULSON G, GOTTLIEB G. Development reflexes: the reappearance of foetal and neonatal reflexes in aged patients. Brain. 1968 Mar 1;91(1):37-52.
  5. Brown DL, Smith TL, Knepper LE. Evaluation of five primitive reflexes in 240 young adults. Neurology. 1998 Jul 1;51(1):322-.
  6. 6.0 6.1 Chandradasa M, Rathnayake L. Retained primitive reflexes in children, clinical implications and targeted home-based interventions. Nursing Children and Young People. 2022 Jan 6;34(1).
  7. 7.0 7.1 Feştilă D, Ghergie M, Muntean A, Matiz D, ŞERBǍNESCU A. Suckling and non-nutritive sucking habit: what should we know?. Clujul medical. 2014;87(1):11.
  8. Hendrik HD. Sucking-pads and primitive sucking reflex. Journal of Neonatal-Perinatal Medicine. 2013 Jan 1;6(4):281-3.
  9. Cutajar K. The effects of smoking on pregnancy and breastfeeding.