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Clinical Summary

Obstructive sleep apnoea and elevated BP in children: is there a link?

Takeaway

  • In children referred for elevated BP, habitual snoring was common.
  • Risk for stage II hypertension was high in children with severe obstructive sleep apnoea (OSA).

Why this matters

  • The American Academy of Pediatrics recommends polysomnography for all children with habitual snoring and symptoms/signs of OSA.
  • Identifying children with OSA may help in lowering the cardiovascular risk in children with elevated BP.

Study design

  • Retrospective review of 446 patients (habitual snoring, n=104; no habitual snoring, n=342) with elevated BP.
  • Patients were assessed for the presence of habitual snoring, learning disability, attention-deficit/hyperactivity disorder and mood problems during the initial visit to the hypertension clinic.
  • Funding: Strong Children’s Research Center.

Key results

  • 23% of patients had habitual snoring and it was more common in those who were obese (P<.001).
  • Overall, 74 patients had polysomnography, of which 17 had primary snoring (no OSA) and 57 had OSA (mild OSA, n=18; moderate OSA, n=18; severe OSA, n=21).
  • After adjustments, patients with severe OSA were associated with higher office systolic BP index (β, 0.07; P=.01).
  • Risk for stage II hypertension was significantly higher in patients with severe OSA (OR, 8.9; P=.004).

Limitations

  • Risk for bias.

References


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