❌ Myth: "I checked BP at 1 minute standing — it's normal, we're done"

✅ Reality: Classic and delayed OH occur between 30 seconds and 3+ minutes

A 1-minute reading alone misses up to 50% of positive cases. The 3-minute measurement is where many cases reveal themselves.

Rule: ALWAYS measure at both 1 AND 3 minutes. One reading is never enough.

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