Unsatisfactory bloodspot rate and a 19-day overdue result
The newborn bloodspot screening programme in one maternity unit reports an unsatisfactory sample rate of 4.1% for the last quarter against a national rate of 1.5%; 22 babies required a repeat card. Review of the cards shows most were taken by two agency midwives on night duty, several with insufficient blood spots and one completed in pencil. Separately, a baby born at 36 weeks had a day-5 TSH just above the local referral threshold; the repeat card was filed rather than sent, and the result is now 19 days overdue. The baby is now six weeks old, feeding well, with no clinical concerns noted at the last GP visit. The unit manager tells you the rate is 'a documentation issue' and proposes to retrain the agency staff and move on.
1. What are your immediate actions for the baby with the overdue TSH result?
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- Find out what actually exists. Was a repeat card ever taken, was it sent, was it analysed and the result never actioned? A missing result is a different failure from an unsent card, and the answer determines the investigation.
- Contact the family today and arrange immediate testing. At six weeks, a heel prick is harder and slower than a venous sample; discuss with the paediatric/endocrine team whether venous TSH and free T4 are more appropriate. Speed and a definitive answer matter more than repeating the screening route out of habit.
- Do not let 'feeding well, no concerns' close the question. Congenital hypothyroidism is treatable and often clinically silent in the early weeks; the reason screening exists is that reassuring appearance does not exclude it. A 19-day delay in a baby with a borderline day-5 TSH is a potential serious harm and must be escalated, not managed quietly at unit level.
- Classify it as a patient safety incident, notify the screening programme's national office and the GP, and make an open disclosure to the parents: what happened, what is being done now, an apology, and who to contact.
- Check for siblings of this failure. A single misfiled card is rarely truly single - audit every result from the same period that was not actioned within the standard, and every baby with a repeat card outstanding.
2. Is the unit manager's 'documentation issue' framing acceptable? Set out your analysis and action plan for the 4.1% rate.
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No. It is convenient and incomplete. A rate of 4.1% against 1.5% is roughly 2.7 times expected, and unsatisfactory samples have a real clinical cost: delayed results, repeat heel pricks on a newborn, and a higher chance that a baby is lost to follow-up. Calling it documentation also ignores the pencil entry, which is a data integrity problem as well as a technique problem.
The pattern - agency night staff, insufficient spots - points to several possible causes, and the response should test them rather than assume training is the answer:
- Technique: warming the heel, correct lancet, letting blood flow, filling the circles, avoiding contamination and squeezing.
- Knowledge and induction: did the two agency midwives have a documented competency sign-off before taking cards? Night duty often means no experienced colleague to correct them.
- Conditions: lighting, workload at night, equipment availability, whether cards and lancets are stocked on the ward.
- Storage and transport: drying time, humidity, batch transport delays.
Plan: observe practice directly; audit a sample of cards against the standard (timing, number of spots, completeness, ink, drying); review night staffing and skill mix; provide hands-on training with supervised practice and a competency record for every staff member who takes a card, agency included; introduce a second-person check before a card leaves the unit while the rate is elevated; feed back the unit rate monthly; and review again in one quarter. If the rate has not fallen, escalate to the programme as a quality issue rather than retraining a second time.
3. What measures and reporting would you use to demonstrate that the service is safe and improving?
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Use a small set of measures that detect both quality and safety failure, reported monthly as run charts rather than single quarterly figures, because one quarter cannot distinguish noise from change.
Sample quality: unsatisfactory rate overall and broken down by staff group and shift; proportion of cards meeting all technical criteria on audit; repeat-card rate.
Timeliness: time from sample to result; proportion of results available within the programme standard; number of repeat cards outstanding beyond the standard; and - the safety measure this incident should have triggered - the number of results that exist but have not been actioned within the agreed window, reported as an exception list with names and dates, not just a percentage.
Competency: percentage of staff taking bloodspots with a current documented competency, including agency and night staff.
Escalation: number of incidents, time to escalation, and confirmation that each was reviewed.
Reporting route: the unit's own quality meeting monthly, the maternity governance committee, and the screening programme's national office; with a low threshold for escalation - any overdue result reported the day it is identified, not at month end. Evidence of success would be the unsatisfactory rate falling towards 1.5% and staying there over two consecutive quarters, no overdue results, and competency records that cover every person who actually takes a card at 3 a.m., not just the ones on the day rota.