Developmental Surveillance and Screening

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Dev Basics - Foundation First!

  • Developmental Surveillance: A continuous, flexible, and longitudinal process of observing a child's development during routine health visits. It involves eliciting parental concerns and skilled observation.
  • Developmental Screening: An intermittent, formal process using standardized, validated tools at specific ages (e.g., 9, 18, 24-30 months) to identify children at high risk for developmental delays.
  • Importance: Both are crucial for early identification of developmental problems, enabling timely intervention and improved outcomes.
  • Periodicity: Surveillance at every health encounter (IAP/WHO).

⭐ Surveillance is a continuous process, while screening is done at specific ages using standardized tools to identify at-risk children not picked up by surveillance alone.

Milestone March - Tiny Steps, Big Wins

Development follows a predictable pattern. 📌 Motor sequence: Cephalo-caudal (head to toe), Proximo-distal (center to periphery).

AgeGross MotorFine MotorLanguageSocial/Cognitive
2mLifts head 45° (prone)Tracks past midlineCoos, gurglesSocial smile
6mSits with support, rollsTransfers objectsMonosyllabic babbleRecognizes mother
9mSits alone, crawlsImmature pincer graspBi-syllabic babbleStranger anxiety
12mWalks with help, stands aloneMature pincer grasp1-2 words (meaning)Waves bye-bye
2yRuns, kicks ballTower of 6-7 cubes2-3 word sentencesParallel play
3yTricycle, hopsCopies circle, tower of 9 cubes3-4 word sentences, knows name/age/sexGroup play, shares
5ySkips wellCopies triangle, person 6 partsFluent speech, counts 10Follows rules, friends

Screening Toolkit - Detective Kit

  • Denver II (DDST-II):
    • Age: Birth - 6 yrs. Direct observation.
    • Domains: Gross motor, fine motor-adaptive, language, personal-social.
  • ASQ-3 (Ages & Stages Questionnaire):
    • Age: 1 mo - 5.5 yrs. Parent-completed, cost-effective.
    • Domains: Communication, gross motor, fine motor, problem-solving, personal-social.
  • M-CHAT-R/F (Autism Screen):
    • Age: 16-30 mos (key: 18 & 24 mos). Good sensitivity; high specificity with Follow-Up.
    • Scores: Low risk (0-2); Medium (3-7, needs FU); High (8-20, refer).
  • TDSC (Trivandrum Development Screening Chart):
    • Age: Birth - 2 yrs (Indian context specific).
    • Domains: Key milestones, vision, hearing.

⭐ M-CHAT-R/F is a crucial parent-reported screening tool for Autism Spectrum Disorder, typically administered at 18 and 24 month well-child visits.

Recommended Developmental Screening Instruments

Red Flags & Response - Sound the Alarm!

  • Critical Red Flags:
    • Social/Language: No social smile (3 mo); no babbling/gesturing (12 mo); no single words (16 mo); no 2-word spontaneous phrases (24 mo); poor eye contact.
    • Motor: Not sitting (9 mo); not walking (18 mo); persistent primitive reflexes.
    • General: Any skill loss. ⚠️ Parental concerns are key; always investigate.
  • Response Protocol:

⭐ Loss of previously acquired milestones (developmental regression) is a major red flag, warranting urgent, comprehensive evaluation.

High‑Yield Points - ⚡ Biggest Takeaways

  • Developmental surveillance is an ongoing process; screening employs standardized tools at set ages.
  • IAP recommended screening: 9, 18, 30 months (general development); 18, 24 months (autism).
  • DDST-II evaluates four domains: Personal-Social, Fine Motor-Adaptive, Language, Gross Motor.
  • Use M-CHAT-R/F for autism screening specifically between 16-30 months.
  • Early detection and prompt intervention are key to better developmental outcomes.
  • Global Developmental Delay (GDD): significant delay (≥2 SD) in ≥2 domains for children <5 years.

Practice Questions: Developmental Surveillance and Screening

Test your understanding with these related questions

In both DSM-5 and proposed ICD-11, which of the following has been removed as core criterion of autism spectrum disorder-

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Flashcards: Developmental Surveillance and Screening

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At _____ months, make-believe (symbolic) play centers on the child s own body

TAP TO REVEAL ANSWER

At _____ months, make-believe (symbolic) play centers on the child s own body

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