Milestones US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Milestones. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Milestones US Medical PG Question 1: A 6-month-old boy is brought to the physician for a well-child examination. The boy was born at term, and the pregnancy was complicated by prolonged labor. There is no family history of any serious illnesses. He can sit upright but needs help to do so and cannot roll over from the prone to the supine position. He can grasp his rattle and can transfer it from one hand to the other. He babbles. He cries if anyone apart from his parents holds him or plays with him. He touches his own reflection in the mirror. Vital signs are within normal limits. He is at the 40th percentile for head circumference, 30th percentile for length, and 40th percentile for weight. Physical examination reveals no abnormalities. Which of the following developmental milestones is delayed in this infant?
- A. Gross motor (Correct Answer)
- B. Fine motor
- C. Social
- D. Language
- E. Cognitive
Milestones Explanation: ***Gross motor***
- The infant can sit upright with help but **cannot roll over** from prone to supine, which is typically achieved by 4-5 months.
- While he can pull himself to stand (an advanced skill for his age), the inability to roll over indicates a delay in fundamental **gross motor development**.
*Fine motor*
- The infant can grasp his rattle and **transfer it from one hand to the other**, which is an appropriate fine motor skill for a 6-month-old.
- This demonstrates adequate **hand-eye coordination** and manipulation abilities.
*Social*
- The infant **cries if anyone apart from his parents holds or plays with him**, indicating **stranger anxiety**, which is a normal social development milestone for this age.
- This shows appropriate attachment and social discrimination.
*Language*
- The infant **babbles**, which is a typical language milestone for a 6-month-old, indicating early vocalization and speech development.
- This suggests that his pre-linguistic skills are emerging as expected.
*Cognitive*
- The infant **touches his own reflection in the mirror**, which is a normal cognitive behavior for a 6-month-old, showing an interest in faces and self-recognition (even if not full understanding).
- This also encompasses the ability to transfer objects, demonstrating **object permanence** and problem-solving skills.
Milestones US Medical PG Question 2: A 4-year-old girl presents to the office with her parents who are concerned about their daughter and slow, progressive changes in her behavior. The girl was born at 39 weeks gestation via spontaneous vaginal delivery. She is up to date on all vaccines and was meeting all developmental milestones until about 2 years ago. At one point she had a vocabulary of several words and now she verbalizes in grunts. She also flaps her hands in a repeated motion and has difficulty walking. Her parents have tried several home therapies to improve their daughter's symptoms including restricted diets, hydrotherapy, and a variety of nutritional supplements. The vital signs include: heart rate 90/min, respiratory rate 22/min, blood pressure 110/65 mm Hg, and temperature 36.9°C (98.4°F). On physical exam, she is well nourished and stares absently out the window. Her heart has a regular rate and rhythm and her lungs are clear to auscultation bilaterally. She has mild scoliosis. Which of the following is the most likely diagnosis?
- A. Autistic spectrum disorder
- B. Tourette syndrome
- C. Cerebral palsy
- D. Phenylketonuria
- E. Rett syndrome (Correct Answer)
Milestones Explanation: ***Rett syndrome***
- This presentation of a 4-year-old girl with previously met milestones, followed by **regression in language** (verbalizing in grunts), **loss of purposeful hand movements** (flapping hands), **gait abnormalities**, and **scoliosis**, is highly characteristic of Rett syndrome.
- Rett syndrome is a **neurodevelopmental disorder** found almost exclusively in girls caused by a mutation in the **MECP2 gene**, which typically manifests between 6 and 18 months of age with a period of normal development followed by regression.
*Autistic spectrum disorder*
- While autism involves **social and communication deficits** and **repetitive behaviors**, it typically presents earlier and does not usually involve a distinct period of **normal development followed by severe regression** in purposeful hand use and gait.
- The specific pattern of regression, especially the loss of purposeful hand movements, is more indicative of Rett syndrome than autism.
*Tourette syndrome*
- Tourette syndrome is characterized by **multiple motor tics** and **one or more vocal tics**, which can wax and wane.
- It does not typically involve the **profound developmental regression** in language, purposeful hand movements, and gait that this patient is experiencing.
*Cerebral palsy*
- Cerebral palsy is a group of **permanent movement disorders** that appear in early childhood, but it is caused by **non-progressive brain damage** or abnormal development, often prenatal or perinatal.
- It does not involve a period of **normal development followed by regression** of acquired skills, which is a hallmark feature in this case.
*Phenylketonuria*
- **Phenylketonuria (PKU)** is a metabolic disorder that can cause **intellectual disability**, seizures, and behavioral problems if untreated.
- However, it is usually screened for at birth, and prompt dietary intervention can prevent severe neurological damage; it does not typically present with the specific pattern of **developmental regression** seen here, particularly with respect to purposeful hand movements and gait.
Milestones US Medical PG Question 3: A 4-year-old boy is brought to the physician because of non-fluent speech. His mother worries that his vocabulary is limited for his age and because he cannot use simple sentences to communicate. She says he enjoys playing with his peers and parents, but he has always lagged behind in his speaking and communication. His speech is frequently not understood by strangers. He physically appears normal. His height and weight are within the normal range for his age. He responds to his name, makes eye contact, and enjoys the company of his mother. Which of the following is the most appropriate next step in management?
- A. Referral to speech therapist
- B. Evaluate response to methylphenidate
- C. Psychiatric evaluation
- D. Audiology testing (Correct Answer)
- E. Thyroid-stimulating hormone
Milestones Explanation: ***Audiology testing***
- Before initiating any therapy for speech delay, it is crucial to rule out **hearing impairment**, as **undiagnosed hearing loss** is the most common organic cause of speech and language difficulties in children.
- **Standard practice guidelines** (AAP) recommend hearing assessment as the **first diagnostic step** in evaluating any child with speech or language delay.
- While other developmental aspects seem intact, the inability to use simple sentences at age 4 and speech that is "frequently not understood by strangers" strongly suggests the need to assess the child's ability to **receive auditory information**.
*Referral to speech therapist*
- While a **speech therapist referral** is highly appropriate for a child with significant speech delay, it should typically follow an assessment to rule out underlying organic causes like **hearing loss**.
- Without addressing potential hearing impairment, speech therapy may be less effective or miss the root cause of the communication difficulty.
*Evaluate response to methylphenidate*
- **Methylphenidate** is a stimulant medication used primarily for **attention-deficit/hyperactivity disorder (ADHD)**.
- There is no indication of ADHD symptoms in this child (e.g., inattention, hyperactivity, impulsivity), and it is not a treatment for **primary speech delay**.
*Psychiatric evaluation*
- The child's ability to respond to his name, make eye contact, and enjoy social interaction with family and peers makes a **primary psychiatric disorder** (like autism spectrum disorder) less likely to be the sole cause of the speech delay.
- Such an evaluation would typically be considered if **social communication deficits**, repetitive behaviors, or restricted interests were prominent.
*Thyroid-stimulating hormone*
- **Hypothyroidism** can cause developmental delays, including speech delay.
- However, the child's normal physical appearance, height, and weight make **congenital or acquired hypothyroidism** less likely to be the primary cause of his isolated speech delay.
Milestones US Medical PG Question 4: A 13-month-old girl is brought to the physician for a well-child examination. She was born at 38 weeks' gestation. There is no family history of any serious illnesses. She cannot pull herself to stand from a sitting position. She can pick an object between her thumb and index finger but cannot drink from a cup or feed herself using a spoon. She comes when called by name and is willing to play with a ball. She cries if she does not see her parents in the same room as her. She coos “ma” and “ba.” She is at the 50th percentile for height and weight. Physical examination including neurologic examination shows no abnormalities. Which of the following is the most appropriate assessment of her development?
- A. Fine motor: normal | Gross motor: delayed | Language: normal | Social skills: delayed
- B. Fine motor: normal | Gross motor: delayed | Language: delayed | Social skills: normal (Correct Answer)
- C. Fine motor: delayed | Gross motor: normal | Language: delayed | Social skills: normal
- D. Fine motor: delayed | Gross motor: delayed | Language: normal | Social skills: normal
- E. Fine motor: delayed | Gross motor: normal | Language: normal | Social skills: delayed
Milestones Explanation: ***Fine motor: normal | Gross motor: delayed | Language: delayed | Social skills: normal***
- **Fine motor** is normal because she demonstrates **pincer grasp** (picking up objects between thumb and index finger), which is the key fine motor milestone expected by 9-12 months. The inability to drink from a cup or self-feed with a spoon represents more complex feeding skills that develop later (12-18 months) and are not primary fine motor milestones at 13 months.
- **Gross motor** is delayed because she cannot pull herself to stand, a milestone typically achieved by 9-12 months. At 13 months, she should be cruising along furniture or beginning to walk independently.
- **Language** is delayed because she only coos "ma" and "ba" without meaningful words. By 13 months, children should typically say 1-2 words with meaning (like "mama" or "dada" used specifically) and have varied babbling patterns.
- **Social skills** are normal as she responds to her name, engages in play (willing to play with a ball), and demonstrates appropriate **separation anxiety** when her parents are not in the room—all expected social-emotional milestones for this age.
*Fine motor: normal | Gross motor: delayed | Language: normal | Social skills: delayed*
- Language is delayed, not normal—cooing "ma" and "ba" without meaningful words does not meet the expected milestone of 1-2 words with meaning by 13 months.
- Social skills are normal, not delayed—responding to her name and showing separation anxiety are appropriate for her age.
*Fine motor: delayed | Gross motor: normal | Language: delayed | Social skills: normal*
- Fine motor is normal, not delayed—the presence of **pincer grasp** is the key indicator, and feeding difficulties reflect more complex coordination rather than delayed fine motor development.
- Gross motor is delayed, not normal—inability to pull to stand at 13 months represents a significant delay.
*Fine motor: delayed | Gross motor: delayed | Language: normal | Social skills: normal*
- Fine motor is normal—**pincer grasp** is present and appropriate for age.
- Language is delayed, not normal—she lacks meaningful words expected at 13 months.
*Fine motor: delayed | Gross motor: normal | Language: normal | Social skills: delayed*
- Fine motor is normal—**pincer grasp** is the key milestone and is present.
- Gross motor is delayed, not normal—cannot pull to stand, which should have been achieved months earlier.
- Social skills are normal, not delayed—separation anxiety and responding to name are age-appropriate behaviors.
Milestones US Medical PG Question 5: 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)
Milestones 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.
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