My post‑prandial blood glucose is 291 mg/dL two hours after a meal while using a carbohydrate‑to‑insulin ratio of 1 unit per 6 g; how many units of rapid‑acting insulin should I give as a correction?

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For an adult with type 1 (or insulin‑requiring type 2) diabetes who has a post‑prandial blood glucose of 291 mg/dL two hours after a meal while using an insulin‑to‑carbohydrate ratio of 1 unit per 6 g carbohydrate, how should the carbohydrate ratio be adjusted?

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