Key Takeaways
- Normal adult systolic blood pressure (SBP) is less than 120 mmHg and diastolic (DBP) less than 80 mmHg.
- Hypertension stage 1 defined as SBP 130-139 mmHg or DBP 80-89 mmHg, affecting 46% US adults.
- Isolated systolic hypertension (ISH) in >60 years: SBP ≥140 mmHg, DBP <90, prevalence 30%.
- Normal core body temperature is 36.5-37.5°C (97.7-99.5°F) orally.
- Hypothermia classified as mild 32-35°C, moderate 28-32°C, severe <28°C.
- Fever threshold 38°C (100.4°F) rectally in adults.
- The average resting heart rate for healthy adult males aged 18-25 years is 70-73 beats per minute (bpm).
- Athletes in endurance sports have resting heart rates as low as 40-60 bpm due to cardiovascular adaptations.
- Resting heart rate above 90 bpm in adults is associated with a 1.5-fold increased risk of cardiovascular mortality.
- Normal SpO2 on room air for healthy adults at sea level is 95-100%.
- Hypoxemia defined as SpO2 <90%, severe <85% requiring oxygen.
- COPD patients target SpO2 88-92% to avoid hypercapnic failure.
- Normal resting respiratory rate for adults is 12-20 breaths per minute (bpm).
- Tachypnea defined as >20 bpm in adults, >60 bpm neonates.
- Bradypnea <12 bpm adults, associated with opioid overdose.
Key vital signs matter, from hypertension thresholds and MAP targets to oxygen and respiratory rate cutoffs.
Related reading
Blood Pressure
Blood Pressure Interpretation
Body Temperature
Body Temperature Interpretation
More related reading
Heart Rate
Heart Rate Interpretation
Oxygen Saturation
Oxygen Saturation Interpretation
More related reading
Respiratory Rate
Respiratory Rate Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Lukas Bauer. (2026, February 13). Vitals Statistics. Gitnux. https://gitnux.org/vitals-statistics
Lukas Bauer. "Vitals Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/vitals-statistics.
Lukas Bauer. 2026. "Vitals Statistics." Gitnux. https://gitnux.org/vitals-statistics.
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