Age-wise Blood Pressure and Hypertension Values

Current classification table

WHO adult definition

Systolic BP ≥140 mmHg and/or diastolic BP ≥90 mmHg, when elevated readings are present on measurements taken on two different days.

Important points for an M.Pharm pharmacology presentation

1. Do not label infant or child BP as hypertensive from one fixed adult number. In children younger than 13 years, use the 90th and 95th percentiles based on age, sex, and height.
2. Confirm hypertension with repeated standardized measurements. Incorrect cuff size, anxiety, pain, crying, recent exercise, caffeine, smoking, and improper posture can falsely elevate BP.
3. Older adults have the same diagnostic cut-off, not a higher one. However, treatment selection and BP goal must account for orthostatic BP fall, frailty, polypharmacy, renal function, and adverse drug effects.
4. Isolated systolic hypertension is common in older people. It results largely from increased arterial stiffness and is clinically important because it increases cardiovascular and cerebrovascular risk.
5. Pharmacology relevance: antihypertensive drug choice differs by patient context. For example, ACE inhibitors/ARBs need monitoring of serum creatinine and potassium, thiazide diuretics may cause electrolyte abnormalities, and beta-blockers are not routine first-line drugs for uncomplicated hypertension unless there is a specific indication such as ischemic heart disease, arrhythmia, or heart failure.

Suggested wording for your slide/report

“Hypertension is an age-dependent clinical condition. In adults, WHO defines hypertension as persistent blood pressure of ≥140/90 mmHg on measurements obtained on two separate days. In individuals aged 13 years and above, hypertension is categorized as stage 1 at 130-139/80-89 mmHg and stage 2 at ≥140/90 mmHg in commonly used pediatric-adolescent classifications. In children below 13 years and in infants, no single universal BP cut-off should be used; diagnosis requires age-, sex-, and height-specific percentile charts, with hypertension generally defined as BP at or above the 95th percentile on repeated measurements. In older adults, the diagnostic threshold remains ≥140/90 mmHg, though treatment goals must be individualized according to frailty, orthostatic hypotension, co-morbid disease, and drug tolerability.”

References

• The WHO hypertension fact sheet defines adult hypertension as BP ≥140/90 mmHg confirmed on two separate days.
• The pediatric textbook source states that pediatric hypertension is based on repeated BP values above the 95th percentile for age, sex, and height: Campbell-Walsh-Wein Urology, hypertension section.
• A peer-reviewed pediatric BP classification review summarizes the thresholds for children aged 1-12 years and adolescents aged 13 years or older.
• Hypertension is highly prevalent in older adults, and isolated systolic hypertension is common: Comprehensive Clinical Nephrology, “Hypertension in Older People,” pp. corresponding to source section 210-214.

Simple example

His BP is higher than the BP of 90 out of 100 similar boys, while about 10 out of 100 have a higher BP.

His BP is higher than 95 out of 100 similar boys.

Why percentile is used in children

• In a short 5-year-old child, 110 mmHg systolic BP might be high.
• In a tall 12-year-old child, the same BP may be normal.

BP interpretation in children aged 1 to under 13 years

• Age-, sex-, and height-specific normal range
• Reference range
• Standard growth/BP chart value
• Hindi: “same age, gender aur height ke bachchon ke comparison mein BP ki position”

Presentation mein simple wording use karein

“BP is above the 95th percentile.”

“Child ka BP same age, sex aur height ke bachchon ke normal reference range se zyada hai.”

“BP child-specific reference chart ke upper normal limit se above hai.”

Easy mapping

Best sentence for your teacher/presentation

“Children mein hypertension ke liye fixed adult BP number use nahi karte. BP ko age, sex aur height ke according standard reference chart se compare kiya jata hai. Agar BP repeated readings mein upper normal limit, that is the 95th percentile, se above ho, then hypertension consider ki jati hai.”

95th percentile (same age, sex and height ke 95% children se higher BP value).

Blood Pressure and Hypertension: Age-wise Chart

Important note for writing in copy

Percentile means child-specific normal reference range.
In infants and children, a single fixed BP number cannot be used because BP varies with age, sex, height, gestational age, and body size. Therefore, their BP is compared with standard BP reference charts.

Short answer for viva / class

WHO defines hypertension in adults as systolic BP of 140 mmHg or more and/or diastolic BP of 90 mmHg or more, confirmed on two separate days. For adults aged 65 years and above, the diagnostic threshold remains the same. In adolescents aged 13 years or above, stage 1 hypertension is 130-139/80-89 mmHg and stage 2 hypertension is 140/90 mmHg or more. In children below 13 years and infants, hypertension is not defined by one fixed BP value; it is diagnosed using age-specific reference charts, usually when repeated BP is at or above the 95th percentile.

Correction and final verification

• The earlier chart was correct in principle, but this final chart makes an important distinction: WHO’s official adult diagnosis threshold is ≥140/90 mmHg, while 130/80 mmHg is used in the AAP adolescent classification as stage 1 hypertension, not as WHO’s adult diagnostic threshold.
• For neonates and infants, it is not scientifically correct to write one universal “normal BP” value. Reference charts must be used.
• Older adults do not have a higher hypertension cut-off. It remains ≥140/90 mmHg under WHO criteria.

References to write below the chart

1. The WHO 2025 Global Hypertension Report and the WHO hypertension fact sheet define adult hypertension as BP ≥140/90 mmHg on two separate days.
2. The AAP pediatric hypertension guideline provides the percentile-based classification for children and numerical classification for those aged 13 years or above.
3. The neonatal section of the AAP guideline uses BP reference values according to postmenstrual age, with the 95th and 99th percentiles used for identifying elevated and severe neonatal BP.