Key Monitoring Parameters
- Measure standing height using a calibrated stadiometer at the same time of day, preferably morning, to minimize diurnal variation in spinal compression.
- Obtain weight using the same calibrated scale each visit, with the child in light clothing and without shoes.
- Calculate growth velocity (cm/year) by comparing current height to measurements from 6-12 months prior; a minimum of 6 months of data is needed for reliable interpretation.
- Plot all measurements on a condition-specific or standardized CDC/WHO growth chart, noting both absolute values and percentile trends.
Injection Administration Best Practices
- Administer recombinant growth hormone subcutaneously in the evening to mimic the body's natural nocturnal pulsatile secretion pattern.
- Rotate injection sites (upper arms, thighs, buttocks, abdomen) systematically to prevent lipoatrophy or lipohypertrophy.
- Ensure the family demonstrates proper reconstitution technique if using a multi-dose vial and needle/syringe system, or proper pen device loading.
- Store medication according to manufacturer guidelines; most preparations require refrigeration (36-46 degrees Fahrenheit) and must not be frozen.
Nutritional and Activity Guidance
- Promote a balanced, age-appropriate diet rich in protein, calcium, and vitamin D to support bone mineralization and lean muscle development during catch-up growth.
- Avoid prescribing high-calorie, high-fat diets that may cause disproportionate weight gain and increase the risk of insulin resistance, a known adverse effect of growth hormone therapy.
- Encourage regular weight-bearing physical activity and play to stimulate bone remodeling and muscle strength; only high-impact collision sports require individualized risk assessment.
Adverse Effect Surveillance
- Monitor for signs of insulin resistance, including acanthosis nigricans, polydipsia, or polyuria; periodic fasting glucose or HbA1c may be indicated.
- Assess for slipped capital femoral epiphysis (SCFE) by asking about new-onset hip or knee pain and observing gait for limping.
- Evaluate for pseudotumor cerebri symptoms such as headache, vomiting, or visual changes, which require urgent ophthalmologic evaluation.
- Check for injection site reactions, including redness, swelling, or nodules, and reinforce proper technique if issues arise.
Family Education and Psychosocial Support
- Teach families that growth response is gradual; a typical increase is 2-4 cm/year above pre-treatment velocity, and therapy often continues for several years until epiphyseal closure.
- Address the child's emotional well-being by screening for bullying, low self-esteem, or social withdrawal related to short stature, and provide referrals to child life specialists or support groups.
- Emphasize the critical importance of adherence; missed doses directly reduce annual growth achieved, and families should problem-solve barriers such as injection anxiety or scheduling conflicts.
- Coordinate with the school nurse to ensure a plan is in place if doses must be administered during school hours or for field trips.