Preoperative hypotension in various age groups is defined as which of the following statements?

Preoperative hypotension in various age groups is defined as which of the following statements?

• A. Less than 60 mm Hg for term neonate (0 to 28 days old).
• B. Less than 70 mm Hg for infants 1 to 12 months old.
• C. Less than 70 mm Hg + (2 × age in years) for children 1 to 10 years old.
• D. All of the above are correct.

Answer: (D)

Age-specific blood pressure thresholds reflect how normal systolic BP rises as a child grows. For term neonates (0–28 days) a systolic BP below 60 mmHg is considered hypotensive; for infants 1–12 months, a threshold of less than 70 mmHg; and for children 1–10 years, less than 70 plus twice the age in years (in mmHg). Each of these statements is accurate for its respective age group, so a combined option that includes all of them correctly identifies preoperative hypotension across ages. In practice, clinicians also reference percentile charts and mean arterial pressure, but within these criteria, the set of thresholds is correct.

Age-specific blood pressure thresholds reflect how normal systolic BP rises as a child grows. For term neonates (0–28 days) a systolic BP below 60 mmHg is considered hypotensive; for infants 1–12 months, a threshold of less than 70 mmHg; and for children 1–10 years, less than 70 plus twice the age in years (in mmHg). Each of these statements is accurate for its respective age group, so a combined option that includes all of them correctly identifies preoperative hypotension across ages. In practice, clinicians also reference percentile charts and mean arterial pressure, but within these criteria, the set of thresholds is correct.