Which of the following indicates an abnormal growth pattern on a pediatric growth chart?

Study for the Medical Council of Canada Qualifying Examination (MCCQE) I. Engage with flashcards and multiple-choice questions with detailed feedback. Prepare confidently!

Crossing percentile lines on a pediatric growth chart indicates an abnormal growth pattern. Growth charts compare a child’s measurements to a reference population across age and sex, and stable tracking along a single percentile usually means growth velocity is appropriate. When the trajectory moves from one percentile to another—upward or downward—it signals a change in growth velocity for that metric, which can be a clue to underlying issues such as malnutrition, chronic illness, endocrine disorders, or psychosocial factors. In contrast, staying within the same percentile over time, or showing a normal weight-for-height relationship, reflects proportionate and steady growth and is typically reassuring. So, crossing percentiles is the pattern most associated with abnormal growth.