Developmental surveillance US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Developmental surveillance. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Developmental surveillance US Medical PG Question 1: An 11-year-old boy is brought to his pediatrician by his parents for the routine Tdap immunization booster dose that is given during adolescence. Upon reviewing the patient’s medical records, the pediatrician notes that he was immunized according to CDC recommendations, with the exception that he received a catch-up Tdap immunization at the age of 8 years. When the pediatrician asks the boy’s parents about this delay, they inform the doctor that they immigrated to this country 3 years ago from Southeast Asia, where the child had not been immunized against diphtheria, tetanus, and pertussis. Therefore, he received a catch-up series at 8 years of age, which included the first dose of the Tdap vaccine. Which of the following options should the pediatrician choose to continue the boy’s immunization schedule?
- A. A single dose of Td vaccine at 18 years of age
- B. A single dose of Td vaccine now
- C. No further vaccination needed
- D. A single dose of Tdap vaccine now
- E. A single dose of Tdap vaccine at 13 years of age (Correct Answer)
Developmental surveillance Explanation: ***A single dose of Tdap vaccine at 13 years of age***
- The CDC recommends a **minimum interval of 5 years** between Tdap doses when Tdap is given as part of a catch-up series.
- Since this patient received his first Tdap at age 8, the earliest he should receive the adolescent booster is at **age 13** (5 years later).
- This timing ensures adequate spacing while still providing the recommended adolescent booster for **pertussis, tetanus, and diphtheria** protection.
- The 5-year interval prevents excessive antigen exposure and optimizes immune response.
*A single dose of Tdap vaccine now*
- Giving Tdap now would result in only a **3-year interval** from the previous Tdap dose at age 8.
- This violates the CDC recommendation of a **minimum 5-year interval** between Tdap doses.
- Shorter intervals may increase local reactogenicity without improving protection.
*A single dose of Td vaccine now*
- While this would provide tetanus and diphtheria protection, it would **not protect against pertussis**, which is a critical component of adolescent vaccination.
- The Tdap vaccine is specifically recommended for adolescents to boost waning pertussis immunity.
- Additionally, giving it now would still be earlier than the recommended 5-year interval from the previous pertussis-containing vaccine.
*A single dose of Td vaccine at 18 years of age*
- This option would result in a **10-year gap** from the last pertussis-containing vaccine, leaving the adolescent vulnerable during high-risk years.
- The adolescent Tdap booster is specifically timed for ages 11-13 to protect during peak transmission periods in middle and high school.
- Waiting until 18 would miss the critical window for pertussis protection.
*No further vaccination needed*
- While the patient completed a catch-up series, the CDC still recommends an **adolescent Tdap booster** even for those who received Tdap in a catch-up series.
- The adolescent booster is important to maintain immunity against pertussis, which wanes significantly over time.
- The booster should be given at age 13 to maintain the 5-year minimum interval.
Developmental surveillance US Medical PG Question 2: A 1-year-old male presents to his pediatrician for a well-child visit. Through a history from the mother and physical examination, the pediatrician learns that the baby babbles non-specifically, takes several steps independently, and picks up his cereal using two fingers. His weight is currently 22 lbs (birth-weight 6 lbs, 9 oz), and his height is 30 inches (birth length 18 inches). Are there any aspects of this child's development that are delayed?
- A. Fine motor skill delay
- B. Language delay (Correct Answer)
- C. Inadequate growth
- D. Gross motor skill delay
- E. There are no developmental concerns
Developmental surveillance Explanation: ***Language delay***
- At 1 year of age, a child should typically be babbling with **specific sounds** and attempting to say their **first words**.
- The child's non-specific babbling suggests a delay in typical **expressive language development**.
*Fine motor skill delay*
- The child is able to pick up cereal using **two fingers**, indicating the development of a **pincer grasp**.
- This is an **age-appropriate fine motor skill** for a 1-year-old.
*Inadequate growth*
- The child has over **tripled his birth weight** (from 6 lbs, 9 oz to 22 lbs) and more than doubled his birth length (from 18 to 30 inches), which are **normal growth patterns** for the first year of life.
- While weight values can be plotted on growth charts, the provided information strongly suggests **adequate growth**.
*Gross motor skill delay*
- The child is taking **several steps independently**, which is an **age-appropriate gross motor milestone** for a 1-year-old.
- Many children take their first independent steps between 9 and 15 months.
*There are no developmental concerns*
- While many milestones are met, the **non-specific babbling** at 1 year strongly suggests a **language delay**.
- It is crucial to identify and address any potential delays early for intervention.
Developmental surveillance US Medical PG Question 3: A 6-month-old girl presents to an outpatient office for a routine physical. She can sit momentarily propped on her hands, babbles with consonants, and transfers objects hand to hand. The pediatrician assures the parents that their daughter has reached appropriate developmental milestones. Which additional milestone would be expected at this stage in development?
- A. Separation anxiety
- B. Showing an object to her parents to share her interest in that object
- C. Starts to share
- D. Engaging in pretend play
- E. Stranger anxiety (Correct Answer)
Developmental surveillance Explanation: ***Stranger anxiety***
- **Stranger anxiety** typically develops around **6–9 months** of age, peaking at **9–12 months**.
- This milestone aligns with the infant's increasing ability to distinguish familiar caregivers from unfamiliar individuals.
*Separation anxiety*
- **Separation anxiety** typically develops later, usually around **9–12 months** of age.
- It involves distress when a primary caregiver leaves, which is distinct from fear of strangers.
*Showing an object to her parents to share her interest in that object*
- **Joint attention**, where a child actively gestures or shows objects to share interest, typically emerges around **9–12 months**.
- This milestone requires more advanced social and cognitive development than expected at 6 months.
*Starts to share*
- The concept of **sharing** and reciprocal play develops later in toddlerhood, typically around **18 months to 2 years**.
- This involves understanding social give-and-take, which is too complex for a 6-month-old.
*Engaging in pretend play*
- **Pretend play** or symbolic play typically begins around **12–18 months** of age.
- It involves using objects or actions to represent something else and requires more advanced cognitive and imaginative skills.
Developmental surveillance US Medical PG Question 4: A 4-month-old boy is brought to the physician for a well-child examination. He was born at 39 weeks gestation via spontaneous vaginal delivery and is exclusively breastfed. He weighed 3,400 g (7 lb 8 oz) at birth. At the physician's office, he appears well. His pulse is 146/min, the respirations are 39/min, and the blood pressure is 78/44 mm Hg. He weighs 7.5 kg (16 lb 9 oz) and measures 65 cm (25.6 in) in length. The remainder of the physical examination is normal. Which of the following developmental milestones has this patient most likely met?
- A. Sits with support of pelvis
- B. Grasps small objects between thumb and finger
- C. Transfers objects from hand to hand
- D. Intentionally rolls over (Correct Answer)
- E. Bounces actively when held in standing position
Developmental surveillance Explanation: ***Intentionally rolls over***
- Rolling over is a common developmental milestone achieved between **4 to 6 months** of age.
- At 4 months, an infant typically has sufficient **head control** and **trunk strength** to intentionally roll from tummy to back or back to tummy.
*Sits with support of pelvis*
- Sitting with **pelvic support** (tripod sitting) is generally achieved around **6 to 7 months** of age.
- A 4-month-old typically lacks the necessary **trunk stability** and strength for this milestone.
*Grasps small objects between thumb and finger*
- This describes a **pincer grasp**, which is a fine motor skill usually developed around **9-12 months** of age.
- At 4 months, infants primarily use a **palmar grasp** (raking motion) to pick up objects.
*Transfers objects from hand to hand*
- Transferring objects from hand to hand is a fine motor milestone typically achieved between **5 and 7 months** of age.
- A 4-month-old is beginning to reach for objects but usually has difficulty with **smooth transfers** between hands.
*Bounces actively when held in standing position*
- Active bouncing when held in a standing position is typically seen around **6 months** when infants start putting more weight on their legs.
- At 4 months, while an infant might bear some weight, **active bouncing** is usually more rudimentary or absent.
Developmental surveillance US Medical PG Question 5: A 2-month-old is brought to the physician for a well-child examination. She was born at 39 weeks gestation via spontaneous vaginal delivery and is exclusively breastfed. She weighed 3,400 g (7 lb 8 oz) at birth. At the physician's office, she appears well. Her pulse is 136/min, the respirations are 41/min, and the blood pressure is 82/45 mm Hg. She weighs 5,200 g (11 lb 8 oz) and measures 57.5 cm (22.6 in) in length. The remainder of the physical examination is normal. Which of the following developmental milestones has this patient most likely met?
- A. Reaches for objects
- B. Stares at own hand
- C. Smiles in response to face (Correct Answer)
- D. Absence of asymmetric tonic neck reflex
- E. Monosyllabic babble
Developmental surveillance Explanation: ***Smiles in response to face***
- A 2-month-old infant typically achieves **social smiling**, often in response to a parent's face, indicating social engagement and developing emotional recognition.
- This milestone is an expected part of **normal social and emotional development** at this age.
*Reaches for objects*
- **Reaching for objects** is a more complex motor skill, generally expected around **4 to 6 months of age**, as fine motor control and hand-eye coordination develop.
- At 2 months, an infant may briefly swipe at objects but usually lacks the coordinated effort to intentionally reach and grasp.
*Stares at own hand*
- **Staring at one's own hand** is an early sign of self-discovery and visual exploration, typically emerging closer to **3 to 4 months of age** as vision matures.
- While a 2-month-old infant can focus on objects, sustained fascination with their own hands usually develops later.
*Absence of asymmetric tonic neck reflex*
- The **asymmetric tonic neck reflex (ATNR)**, or 'fencing reflex', is a primitive reflex normally present at 2 months of age and typically **disappears around 4 to 6 months**.
- Its presence is normal at 2 months, and its absence would be an abnormal finding, not a developmental milestone.
*Monosyllabic babble*
- **Monosyllabic babbling**, such as "ba" or "da", indicates developing language skills and typically begins around **6 to 9 months of age**.
- At 2 months, infants usually produce cooing sounds and simple vocalizations, but not structured babbling.
Developmental surveillance US Medical PG Question 6: During subject selection for an infant neurological development study, a child is examined by the primary investigator. She is at the 80th percentile for length and weight. She has started crawling. She looks for dropped objects. She says mama and dada non-specifically. She can perform the pincer grasp. Which of the following additional skills or behaviors would be expected in a healthy patient of this developmental age?
- A. Pulls up to stand (Correct Answer)
- B. Says at least 1 word clearly
- C. Turns pages in a book
- D. Points to 3 body parts
- E. Engages in pretend play
Developmental surveillance Explanation: ***Pulls up to stand***
- The child is reported to be crawling, performing a **pincer grasp**, and babbling "mama" and "dada" non-specifically, which suggests an age of **8-10 months**. Pulling to stand is a typical motor milestone expected around **9-11 months of age**.
- This milestone aligns with the gross motor development progressing from crawling to standing with support before independent walking.
*Says at least 1 word clearly*
- While "mama" and "dada" are spoken non-specifically, a child typically starts saying their **first meaningful word** around **12 months of age**.
- The described child's language development is consistent with an age where babbling is prominent, but specific, meaningful words are still developing.
*Turns pages in a book*
- This fine motor skill, especially turning multiple pages independently, is usually achieved around **12-18 months of age**, requiring more advanced dexterity than a pincer grasp alone.
- The child described is likely younger, based on other developmental markers like non-specific "mama/dada."
*Points to 3 body parts*
- Pointing to body parts on command indicates a higher level of receptive language and cognitive understanding, a skill typically emerging around **15-18 months of age**.
- The current language skills are more indicative of a younger infant who does not yet demonstrate this level of comprehension.
*Engages in pretend play*
- Engaging in **pretend play**, such as feeding a doll or talking on a toy phone, is a cognitive and social milestone typically observed in toddlers, starting around **18-24 months of age**.
- The behaviors described in the question indicate an earlier developmental stage, preceding symbolic play.
Developmental surveillance US Medical PG Question 7: A 3-year-old boy is brought to your pediatrics office by his parents for a well-child checkup. The parents are Amish and this is the first time their child has seen a doctor. His medical history is unknown, and he was born at 39 weeks gestation. His temperature is 98.3°F (36.8°C), blood pressure is 97/58 mmHg, pulse is 90/min, respirations are 23/min, and oxygen saturation is 99% on room air. The child is in the corner stacking blocks. He does not look the physician in the eye nor answer your questions. He continually tries to return to the blocks and becomes very upset when you move the blocks back to their storage space. The parents state that the child has not begun to speak and often exhibits similar behaviors with toy blocks he has at home. On occasion, they have observed him biting his elbows. Which of the following is the best next step in management?
- A. Risperidone
- B. Restructuring of the home environment
- C. Fluoxetine
- D. Hearing exam
- E. Educating the parents about autism spectrum disorder (Correct Answer)
Developmental surveillance Explanation: ***Educating the parents about autism spectrum disorder***
- The child exhibits several **red flags for autism spectrum disorder (ASD)**, including **lack of eye contact, delayed speech, repetitive behaviors** (stacking blocks, becoming upset when routine is disrupted), and **self-injurious behavior** (biting elbows).
- Since this is the child's **first medical visit**, the parents are unaware of these concerns. The physician's first step should be to **educate the parents** about ASD to initiate further evaluation and early intervention.
- While a **formal diagnosis** requires more extensive evaluation (including developmental screening tools like M-CHAT-R and comprehensive assessment), educating the parents is crucial for obtaining their consent and cooperation for subsequent steps, which would include referral to a developmental specialist and early intervention services.
*Risperidone*
- **Risperidone** is an atypical antipsychotic medication sometimes used to manage severe **irritability** or **aggressiveness** in children with ASD, but it is not a first-line treatment for initial diagnosis or typical symptoms.
- Administering medication without a formal diagnosis, comprehensive behavioral management plan, and parental understanding is premature and inappropriate.
*Restructuring of the home environment*
- While **environmental modifications** can be beneficial for children with ASD, suggesting this as the first step without a clear diagnosis or parental understanding of specific needs is insufficient.
- The priority is to establish a diagnosis through proper evaluation and then tailor interventions, which may include home modifications in conjunction with other therapies like applied behavior analysis (ABA).
*Fluoxetine*
- **Fluoxetine** is a selective serotonin reuptake inhibitor (SSRI) used for anxiety, depression, and obsessive-compulsive disorder. It may be used in ASD to address **comorbid anxiety** or **repetitive behaviors**, but it is not a primary diagnostic tool or initial treatment.
- Like risperidone, prescribing medication without a proper diagnosis and understanding of the child's specific psychiatric needs is not the appropriate first step.
*Hearing exam*
- Although **hearing impairment** can cause **delayed speech** and affect social interaction, the child's other symptoms, such as **lack of eye contact, repetitive behaviors, and self-injurious actions**, are not typical of isolated hearing loss.
- While a hearing exam might be part of a comprehensive developmental workup later (as hearing and vision screening are standard in evaluating developmental delays), addressing the more pervasive signs suggestive of ASD takes precedence in the initial discussion with parents.
Developmental surveillance US Medical PG Question 8: A 12-month-old boy is brought to the physician for a well-child examination. He was born at 38 weeks' gestation and was 48 cm (19 in) in length and weighed 3061 g (6 lb 12 oz); he is currently 60 cm (24 in) in length and weighs 7,910 g (17 lb 7 oz). He can walk with one hand held and can throw a small ball. He can pick up an object between his thumb and index finger. He can wave 'bye-bye'. He can say 'mama', 'dada' and 'uh-oh'. He cries if left to play with a stranger alone. Physical examination shows no abnormalities. Which of the following is most likely delayed in this child?
- A. Fine motor skills
- B. Language skills
- C. Growth (Correct Answer)
- D. Gross motor skills
- E. Social skills
Developmental surveillance Explanation: ***Growth***
- At 1 year of age, a child's **birth weight should triple**, and their **birth length should increase by 50%**.
- This child's birth weight was 3061 g (6 lb 12 oz), meaning his expected weight at 1 year should be around **9183 g (20 lb 4 oz)**, but he only weighs **7910 g (17 lb 7 oz)**, indicating **inadequate weight gain** (~1273 g below expected).
- This child's birth length was 48 cm (19 in), meaning his expected length at 1 year should be around **72 cm (28 in)**, but he is only **60 cm (24 in)**, indicating **poor linear growth** (12 cm below expected).
- Both **weight-for-age and length-for-age are delayed**, making growth the most likely delayed parameter.
*Fine motor skills*
- The child can **pick up an object between his thumb and index finger**, demonstrating a **pincer grasp**, which is an appropriate fine motor skill for a 12-month-old.
- He can also **throw a small ball**, further indicating age-appropriate fine motor development.
*Language skills*
- The child can say **'mama', 'dada'**, and **'uh-oh'**, which are appropriate first words for a 12-month-old.
- He also **waves 'bye-bye'**, showing appropriate receptive and expressive communication.
*Gross motor skills*
- The child can **walk with one hand held**, which is an expected gross motor milestone for a 12-month-old.
- Many 12-month-olds are just beginning to cruise or take their first independent steps.
*Social skills*
- The child **waves 'bye-bye'** and **cries if left with a stranger alone**, which are age-appropriate demonstrations of **social interaction** and **stranger anxiety**, respectively, for a 12-month-old.
- These behaviors indicate typical social and emotional development.
Developmental surveillance US Medical PG Question 9: A 4-year-old boy is brought to a pediatrician by his parents for a consultation after his teacher complained about his inability to focus or make friends at school. They mention that the boy does not interact well with others at home, school, or daycare. On physical examination, his vital signs are stable with normal weight, height, and head circumference for his age and sex. His general examination and neurologic examination are completely normal. A recent audiological evaluation shows normal hearing, and intellectual disability has been ruled out by a clinical psychologist. Which of the following investigations is indicated as part of his diagnostic evaluation at present?
- A. Magnetic resonance imaging (MRI) of brain
- B. Electroencephalography
- C. No further testing is needed
- D. Positron Emission Tomography (PET) scanning of head
- E. Autism spectrum disorder screening and developmental assessment (Correct Answer)
Developmental surveillance Explanation: ***Autism spectrum disorder screening and developmental assessment***
- The clinical presentation (inability to focus, difficulty making friends, poor social interaction across multiple settings) is **highly suggestive of Autism Spectrum Disorder (ASD)**.
- After ruling out **hearing impairment and intellectual disability**, the next appropriate step is **formal ASD screening using validated tools** such as the **Modified Checklist for Autism in Toddlers (M-CHAT)**, **Autism Diagnostic Observation Schedule (ADOS)**, or **Autism Diagnostic Interview-Revised (ADI-R)**.
- According to **AAP guidelines**, when developmental concerns suggestive of ASD are identified, formal screening and comprehensive developmental assessment are **essential components of the diagnostic evaluation**.
- ASD diagnosis is primarily **clinical**, based on standardized screening tools and developmental assessments, not neuroimaging or electrophysiological studies.
*No further testing is needed*
- This is **incorrect** because the patient has not yet undergone **formal ASD-specific screening and developmental assessment**.
- While hearing and intellectual disability have been ruled out, **diagnostic confirmation of ASD** requires structured evaluation using validated assessment tools.
- Simply observing symptoms without formal screening is inadequate for establishing an ASD diagnosis.
*Magnetic resonance imaging (MRI) of brain*
- Brain MRI is **not routinely indicated** for ASD diagnosis as it typically shows **normal findings** in children with ASD.
- Neuroimaging is reserved for cases with **focal neurological signs, regression, or atypical features** suggesting structural abnormalities.
- This patient has a **normal neurological examination**, making MRI unnecessary.
*Electroencephalography*
- EEG is indicated only when there is suspicion of **seizure disorder** or other specific neurological conditions.
- The patient has a **normal neurological examination** with no seizure-like symptoms, making EEG unnecessary at this stage.
*Positron Emission Tomography (PET) scanning of head*
- PET scans are **not part of routine ASD diagnostic workup** and are typically used in research settings or for evaluating specific metabolic or neoplastic conditions.
- The **radiation exposure and invasiveness** make PET scanning inappropriate for initial diagnostic evaluation in a child with developmental concerns.
Developmental surveillance US Medical PG Question 10: A 2-year-old girl is brought to the physician by her mother for a well-child examination. She is at the 55th percentile for height and the 40th percentile for weight. Vital signs are within normal limits. Physical examination shows no abnormalities. She is able to follow simple commands, such as “close your eyes, then stick out your tongue,” but she is unable to follow 3-step commands. She knows approximately 75 words, and half of her speech is understandable. She can say 2-word phrases, and she is able to name many parts of the body. Assuming normal development, which of the following milestones would be expected in a patient this age?
- A. Hops on one foot
- B. Engages in role-playing
- C. Separates easily from parents
- D. Pedals a tricycle
- E. Builds a tower of 6 cubes (Correct Answer)
Developmental surveillance Explanation: ***Builds a tower of 6 cubes***
- At 2 years old, children typically develop fine motor skills enabling them to stack **6 to 7 cubes** to build a tower, demonstrating good hand-eye coordination.
- This milestone aligns well with the described cognitive development, such as following multi-step commands and early language acquisition.
*Hops on one foot*
- **Hopping on one foot** is a gross motor skill usually achieved later, typically around **4 years of age**.
- A 2-year-old child is more likely to be developing skills like running, jumping with two feet, or walking up and down stairs.
*Engages in role-playing*
- While toddlers engage in **imitative play**, true imaginative **role-playing** with complex scenarios and multiple characters typically develops later, around **3 years of age or older**.
- At 2, play is often more focused on mimicking observed actions.
*Separates easily from parents*
- At 2 years old, many children are still experiencing **separation anxiety**, especially in unfamiliar situations.
- **Easy separation** from parents is a milestone typically achieved later as children develop more independence and social confidence, often closer to 3 or 4 years of age.
*Pedals a tricycle*
- **Pedaling a tricycle** requires coordinated gross motor skills, balance, and cognitive understanding that are typically developed around **3 years of age**.
- A 2-year-old may be able to sit on a tricycle and push with their feet, but not yet pedal efficiently.
More Developmental surveillance US Medical PG questions available in the OnCourse app. Practice MCQs, flashcards, and get detailed explanations.
