A Reassuring ACT, Three Rescue Visits, and One Unusable Spirometry Effort
Marcus is 9 and has had asthma for four years. He takes fluticasone propionate 44 mcg, two puffs twice daily with a valved holding chamber, plus albuterol as needed. At today's annual visit his mother says he is 'doing great -- he hardly ever needs the inhaler.' His Childhood ACT score is 22. Spirometry is attempted: the first effort produces an FEV1 of 76% predicted with an abruptly truncated curve; the technologist notes he coughed twice and stopped early. After coaching, two further efforts give an FEV1 of 92% predicted with a reproducible plateau. The mother has also brought the school nurse's log, which shows three albuterol visits in the past two weeks, one after outdoor recess, with a note reading 'used inhaler at 11:40, returned to class.'
1. Which data sources conflict here, and how do you decide what to trust when interpreting today's spirometry?
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Separate test validity from disease status.
- The 76% effort is not interpretable as obstruction. A cough-terminated curve with no plateau fails acceptability criteria, and a 16-point swing after coaching is larger than an effort-independent change would be. Report the coached 92% as the session result, document technical quality of earlier efforts, and do not record the first value as his baseline or as bronchodilator responsiveness.
- The symptom report and the nurse log measure different windows and different things. ACT covers four weeks and depends on recall and on the family's definition of normal. The nurse log is a two-week, contemporaneous, behavior-based count.
- The discordance is itself the finding. A reassuring ACT alongside three rescue visits in 14 days means his symptoms are being under-recognized, not that they are absent. Trust the shorter-window, behavior-based data for the control classification, and interrogate exercise symptoms, night cough, and what 'hardly ever' actually means in his week.
2. What most likely explains the gap between the mother's report and the nurse's log, and how does that change your assessment approach?
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The likeliest explanation is a combination of poor symptom perception and normalization, not dishonesty. Children who adapt to mild limitation stop noticing it: they slow down on the playground rather than wheeze, and parents see a child who is not in crisis and read that as controlled. An ACT of 22 sits just above the cutoff, so a single point of recall drift flips the classification -- it is not a robust reassurance here.
What changes:
- Ask behaviorally rather than globally: 'What does he do at recess when he is first out of breath?' 'Has he ever stopped playing to catch his breath?' 'How many nights in the last two weeks did you hear him cough?'
- Treat the nurse log as his peak-flow equivalent: an objective count of reliever need he did not have to remember.
- Ask the family directly whether they have ever been told his asthma is mild, because that belief predicts under-reporting and under-treatment.
3. The mother asks whether the asthma is now well controlled so Marcus can stop the daily inhaler. What do you say, and what is your recommendation?
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Do not step down today. Step-down requires a sustained period of good control with confirmed adherence, confirmed technique, and reliable symptom reporting -- and the reliable data contradict control while the other two are unverified.
- Reframe for the mother: a good breathing test does not cancel a bad two weeks. The test tells you his airways are not currently obstructed; the log tells you he needed rescue medicine three times in fourteen days, one of those after exercise.
- Verify technique with the holding chamber and check refill history, since 'daily use' has not been independently confirmed.
- Address the exercise pattern, since one rescue visit followed recess: review pre-treatment before activity if prescribed, and tell the nurse what to do.
- Set a review in 4-6 weeks with a fresh nurse log and an ACT scored alongside specific symptom questions. Frame the step-down conversation as something he may earn, not something he is being denied.