Sarnat staging

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Sarnat Staging

Sarnat staging (pronunciation: /ˈsɑːrnæt/), also known as Sarnat and Sarnat staging, is a clinical grading system used to assess the severity of perinatal asphyxia or hypoxic-ischemic encephalopathy (HIE) in newborns. The system was developed by Dr. Maria Sarnat and Dr. Marvin Sarnat in 1976.

Etymology

The term "Sarnat staging" is named after Dr. Maria Sarnat and Dr. Marvin Sarnat, who first introduced this grading system in their seminal 1976 paper, "Neonatal encephalopathy following fetal distress".

Definition

Sarnat staging is a clinical grading system that categorizes the severity of perinatal asphyxia or hypoxic-ischemic encephalopathy in newborns into three stages: Stage I (mild), Stage II (moderate), and Stage III (severe). Each stage is defined by specific clinical findings and symptoms, including neurological and systemic signs.

Stages

  • Stage I (Mild): Characterized by hyperalertness, normal muscle tone, and absence of seizures. Symptoms usually resolve within 24 hours.
  • Stage II (Moderate): Characterized by lethargy, decreased muscle tone, and presence of seizures. Symptoms may last for 2-14 days.
  • Stage III (Severe): Characterized by coma, flaccidity, and frequent seizures. Symptoms may last for more than 14 days and can result in long-term neurological complications.

Related Terms

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