{
 "$schema": "https://tonelva.com/api/v1/openapi.json",
 "id": "guides",
 "title": "Blood pressure reference articles",
 "description": "The editorial corpus: what each article answers, when it was published and last revised, and where its markdown twin is. Every page states categories under both guidelines and none of them gives a personal target.",
 "url": "https://tonelva.com/api/v1/guides.json",
 "documentation": "https://tonelva.com/api/",
 "generated": "2026-09-17T06:58:39.854Z",
 "publisher": {
  "name": "Tonelva",
  "legal_name": "Vast Flow, LLP",
  "url": "https://tonelva.com/",
  "documentation": "https://tonelva.com/api/",
  "contact": "support@tonelva.com",
  "about": "https://tonelva.com/about/",
  "note": "Tonelva publishes reference material and free calculators, and builds a blood pressure diary app. It is not a clinical body and sets no thresholds of its own: every category here is quoted from a published guideline and cited to the society that issued it."
 },
 "licence": {
  "id": "CC-BY-4.0",
  "name": "Creative Commons Attribution 4.0 International",
  "url": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Tonelva (https://tonelva.com)",
  "covers": "The compilation: the machine-readable encoding of the two classification tables, the derived formulas, the tool catalogue and every field of this API. Use it commercially, modify it, redistribute it; credit Tonelva with a link.",
  "does_not_cover": "The guidelines themselves. The thresholds are quoted from the documents cited on each table; the societies that published them hold their own rights in those documents."
 },
 "upstream_sources": [
  {
   "id": "aha-2017",
   "name": "2017 ACC/AHA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults",
   "publisher": "American College of Cardiology / American Heart Association",
   "doi": "10.1161/HYP.0000000000000065",
   "url": "https://doi.org/10.1161/HYP.0000000000000065",
   "asOf": "2017-11-13"
  },
  {
   "id": "esc-esh-2018",
   "name": "2018 ESC/ESH Guidelines for the management of arterial hypertension",
   "publisher": "European Society of Cardiology / European Society of Hypertension",
   "doi": "10.1093/eurheartj/ehy339",
   "url": "https://doi.org/10.1093/eurheartj/ehy339",
   "citation": "European Heart Journal 39(33), 3021–3104, 25 August 2018.",
   "asOf": "2018-08-25",
   "superseded_in_part_by": "2024 ESC Guidelines for the management of elevated blood pressure and hypertension"
  },
  {
   "id": "home-monitoring-protocol",
   "name": "Home blood pressure monitoring protocol: seven consecutive mornings and evenings, duplicate readings, first day discarded",
   "publisher": "Common to the ACC/AHA, ESC/ESH and ESH home-monitoring guidance",
   "url": "https://tonelva.com/vitals/home-blood-pressure-monitoring/",
   "asOf": "2018-08-25"
  }
 ],
 "scope_limits": {
  "no_diagnosis": "A category is a label for one measurement, not a diagnosis. Hypertension is diagnosed from repeated readings, usually taken away from a clinic, interpreted by a doctor.",
  "no_treatment": "Nothing here recommends, starts, stops or adjusts medication, and no target figure here is a personal target. Targets are set by the clinician managing that person's care.",
  "no_measurement": "Tonelva records readings from a cuff. Neither the app nor a phone measures blood pressure, and any product claiming to do so from a camera or a fingertip is not measuring it either.",
  "emergency": "A reading above 180 systolic or 120 diastolic together with chest pain, breathlessness, weakness, vision change or confusion is emergency care, not a diary entry.",
  "two_frameworks": "Every classification returns BOTH the 2017 ACC/AHA and the 2018 ESC/ESH category. Reporting one without the other is how a reader ends up with two reputable sources that contradict each other and no way to reconcile them."
 },
 "not_published": [
  {
   "what": "The competitor app snapshot behind /compare/ — ratings, prices, release dates and store descriptions.",
   "why": "That metadata comes from the Apple App Store and is Apple's to license, not ours, and the descriptions are each publisher's own marketing. Republishing either keyless and CC BY would relicense content we do not own and distribute our competitors' copy at our cost.",
   "instead": "https://tonelva.com/compare/"
  },
  {
   "what": "Any blood pressure reading entered by anyone, in the app or in a calculator on this site.",
   "why": "There is nothing to publish. The calculators run entirely in the browser and transmit nothing; the app keeps its diary on the device. No reading reaches a server that could publish it, and publishing one is not something a user agreed to.",
   "instead": "https://tonelva.com/privacy/"
  },
  {
   "what": "Population statistics on blood pressure — prevalence, distribution by age, outcome rates.",
   "why": "Tonelva measures nothing and holds no cohort. Quoting such figures from a dataset we did not build would put our name on numbers we cannot stand behind.",
   "instead": "https://www.who.int/data/gho"
  }
 ],
 "count": 20,
 "sections": {
  "vitals": {
   "url": "https://tonelva.com/vitals/",
   "count": 14,
   "about": "Reference articles on measuring, recording and reading blood pressure."
  },
  "compare": {
   "url": "https://tonelva.com/compare/",
   "count": 6,
   "about": "Head-to-head comparisons with other blood pressure apps. Signed editorial by an interested party — Tonelva publishes it — and read as such. The App Store snapshot behind these pages is deliberately not in this API."
  }
 },
 "markdown": "Append index.md to any URL below, or send Accept: text/markdown.",
 "data": {
  "vitals": [
   {
    "slug": "aha-vs-esc-blood-pressure-guidelines",
    "url": "https://tonelva.com/vitals/aha-vs-esc-blood-pressure-guidelines/",
    "markdown": "https://tonelva.com/vitals/aha-vs-esc-blood-pressure-guidelines/index.md",
    "title": "ESC/ESH blood pressure guidelines: why US and European thresholds differ",
    "description": "Compare ACC/AHA and ESC/ESH blood pressure thresholds, understand home readings, and see why the same number can receive different labels.",
    "answers": "ESC ESH blood pressure guidelines",
    "published": "2026-07-30",
    "modified": "2026-07-30",
    "faq_questions": [
     "What are the ESH guidelines for hypertension?",
     "What is the target blood pressure for ESC guidelines?",
     "Did Europe change its blood pressure baseline to 140/90?",
     "What is the newest European blood pressure guideline?",
     "What is the difference between AHA and ESC hypertension guidelines?",
     "Which blood pressure guideline should I use?",
     "Is 130/85 high blood pressure?",
     "Do home blood pressure readings use the same categories as office readings?"
    ]
   },
   {
    "slug": "blood-pressure-apps",
    "url": "https://tonelva.com/vitals/blood-pressure-apps/",
    "markdown": "https://tonelva.com/vitals/blood-pressure-apps/index.md",
    "title": "What a blood pressure app can and cannot do",
    "description": "A blood pressure app cannot measure you. Learn how to choose one that records cuff readings, protects privacy, and creates a useful history.",
    "answers": "blood pressure app",
    "published": "2026-07-31",
    "modified": "2026-07-31",
    "faq_questions": [
     "Can I really check my blood pressure with my phone?",
     "Is there a true blood pressure app?",
     "Can my phone tell me my blood pressure?",
     "What is the best blood pressure app?",
     "Is there a free blood pressure app for Android?",
     "What should I look for in a free blood pressure app for iPhone?",
     "Do finger blood pressure apps work?",
     "Where can I find a blood pressure app download?"
    ]
   },
   {
    "slug": "blood-pressure-by-age",
    "url": "https://tonelva.com/vitals/blood-pressure-by-age/",
    "markdown": "https://tonelva.com/vitals/blood-pressure-by-age/index.md",
    "title": "Blood pressure by age chart: why age alone cannot set a target",
    "description": "Blood pressure by age chart explained: compare American and European categories, understand aging arteries, and track readings your clinician can use.",
    "answers": "blood pressure by age chart",
    "published": "2026-07-16",
    "modified": "2026-07-16",
    "faq_questions": [
     "What is ideal blood pressure by age?",
     "Is 140 over 70 a good blood pressure for a 70 year old?",
     "Is 140/80 blood pressure normal for a 60 year old?",
     "What is normal blood pressure for a 70 year old?",
     "Is there an elderly blood pressure chart?",
     "Should a blood pressure chart by age and gender use different numbers for women?",
     "What should an 85 year old blood pressure be?",
     "Can a phone measure my blood pressure without a cuff?"
    ]
   },
   {
    "slug": "blood-pressure-chart",
    "url": "https://tonelva.com/vitals/blood-pressure-chart/",
    "markdown": "https://tonelva.com/vitals/blood-pressure-chart/index.md",
    "title": "The blood pressure chart, in both the American and European versions",
    "description": "Compare American ACC/AHA and European ESC/ESH blood pressure categories, understand systolic and diastolic readings, and keep a useful home log for your appointment.",
    "answers": "blood pressure chart",
    "published": "2026-07-13",
    "modified": "2026-07-13",
    "faq_questions": [
     "What is a good blood pressure rate by age?",
     "Which blood pressure number is more concerning, the top or the bottom?",
     "Is 140 over 70 a good blood pressure?",
     "What throws off a blood pressure reading?",
     "Is 130/85 high blood pressure?",
     "Is there a normal blood pressure chart by age and gender?",
     "What is a low blood pressure chart?",
     "Can a phone measure blood pressure?"
    ]
   },
   {
    "slug": "blood-pressure-different-in-each-arm",
    "url": "https://tonelva.com/vitals/blood-pressure-different-in-each-arm/",
    "markdown": "https://tonelva.com/vitals/blood-pressure-different-in-each-arm/index.md",
    "title": "Why Is My Blood Pressure Different in Each Arm?",
    "description": "Blood pressure can differ between arms. Learn what 10, 15, and 20 mmHg gaps may mean, how to compare readings, and which arm to use.",
    "answers": "why is my blood pressure different in each arm",
    "published": "2026-07-28",
    "modified": "2026-07-28",
    "faq_questions": [
     "Is it normal for blood pressure readings to be different in each arm?",
     "Which arm is more accurate for a blood pressure reading?",
     "When should I worry about blood pressure differences between arms?",
     "What causes unequal blood pressure in the arms?",
     "Is a 10 point difference in blood pressure between arms normal?",
     "What does a 15 point difference in blood pressure between arms mean?",
     "What is the treatment for a 20 point difference in blood pressure between arms?",
     "Can a phone measure blood pressure in each arm?"
    ]
   },
   {
    "slug": "blood-pressure-log-for-your-doctor",
    "url": "https://tonelva.com/vitals/blood-pressure-log-for-your-doctor/",
    "markdown": "https://tonelva.com/vitals/blood-pressure-log-for-your-doctor/index.md",
    "title": "A blood pressure log for doctor appointments",
    "description": "A blood pressure log for an appointment should show averages, timing, arm, cuff, and conditions. Learn how to organize readings clearly for review.",
    "answers": "blood pressure log for doctor",
    "published": "2026-07-29",
    "modified": "2026-07-29",
    "faq_questions": [
     "What should a blood pressure log for a doctor include?",
     "Where can I find a free blood pressure log sheet PDF?",
     "Is a monthly blood pressure log sheet PDF better than a weekly log?",
     "Does an American Heart Association blood pressure log use the same categories as Europe?",
     "Where can I find a printable NHS blood pressure recording chart?",
     "Are there large print free printable blood pressure log sheets?",
     "Can my phone or a blood pressure app measure my blood pressure?",
     "How many days of readings should I bring to my doctor?"
    ]
   },
   {
    "slug": "home-blood-pressure-monitoring",
    "url": "https://tonelva.com/vitals/home-blood-pressure-monitoring/",
    "markdown": "https://tonelva.com/vitals/home-blood-pressure-monitoring/index.md",
    "title": "Home Blood Pressure Monitoring Protocol: The Seven-Day Method",
    "description": "Use a seven-day home blood pressure monitoring protocol with 28 readings, a first-day discard, proper cuff technique, and a meaningful average.",
    "answers": "home blood pressure monitoring protocol",
    "published": "2026-07-18",
    "modified": "2026-07-18",
    "faq_questions": [
     "What are the new blood pressure guidelines for over 60?",
     "Is it better to check blood pressure on the right or left arm?",
     "What throws off a blood pressure reading?",
     "How many readings should I average at home?",
     "Is checking blood pressure too often harmful?",
     "What is the most accurate blood pressure monitor for home use?",
     "How do I take blood pressure step by step with pictures?",
     "How do I read a digital blood pressure monitor?"
    ]
   },
   {
    "slug": "how-to-measure-blood-pressure-at-home",
    "url": "https://tonelva.com/vitals/how-to-measure-blood-pressure-at-home/",
    "markdown": "https://tonelva.com/vitals/how-to-measure-blood-pressure-at-home/index.md",
    "title": "How to measure blood pressure at home correctly",
    "description": "Learn how to measure blood pressure at home with the right cuff, posture, rest period and recording method so your readings show a useful pattern.",
    "answers": "how to measure blood pressure at home correctly",
    "published": "2026-07-20",
    "modified": "2026-07-20",
    "faq_questions": [
     "When is the most accurate time to take blood pressure?",
     "How do I tell if my blood pressure reading is accurate?",
     "What should the bottom number be on a blood pressure check?",
     "What throws off a blood pressure reading?",
     "Can I check my blood pressure without a machine?",
     "How often should I check my blood pressure at home?",
     "Are wrist blood pressure monitors accurate?",
     "How do I read a digital blood pressure monitor?"
    ]
   },
   {
    "slug": "is-130-over-85-high",
    "url": "https://tonelva.com/vitals/is-130-over-85-high/",
    "markdown": "https://tonelva.com/vitals/is-130-over-85-high/index.md",
    "title": "Is 130/85 High Blood Pressure? Two Guideline Answers",
    "description": "A reading of 130/85 is stage 1 under US guidance but high-normal under European guidance. Learn how to repeat it and spot a meaningful pattern.",
    "answers": "is 130/85 high blood pressure",
    "published": "2026-07-14",
    "modified": "2026-07-14",
    "faq_questions": [
     "Should I worry if my blood pressure is 130/85?",
     "Can a 130/80 blood pressure cause a stroke?",
     "Does 130/85 require medication?",
     "What should I do if my blood pressure is 135/85?",
     "What is stage 1 hypertension?",
     "Is 130/80 blood pressure normal?",
     "What is normal blood pressure by age?",
     "What is stage 2 hypertension?"
    ]
   },
   {
    "slug": "mean-arterial-pressure",
    "url": "https://tonelva.com/vitals/mean-arterial-pressure/",
    "markdown": "https://tonelva.com/vitals/mean-arterial-pressure/index.md",
    "title": "Mean arterial pressure: the formula and its honest limits at home",
    "description": "Mean arterial pressure explained: calculate MAP, interpret the estimate, compare U.S. and European blood-pressure categories, and use home readings wisely.",
    "answers": "mean arterial pressure",
    "published": "2026-07-22",
    "modified": "2026-07-22",
    "faq_questions": [
     "How do you calculate mean arterial pressure?",
     "What is the MAP for 120/80?",
     "What is the formula for calculating MAP?",
     "What is a normal MAP range?",
     "Is a MAP of 110 too high?",
     "Why is mean arterial pressure important?",
     "Is 130/85 high blood pressure?",
     "Is there a normal mean arterial pressure by age?"
    ]
   },
   {
    "slug": "morning-blood-pressure-surge",
    "url": "https://tonelva.com/vitals/morning-blood-pressure-surge/",
    "markdown": "https://tonelva.com/vitals/morning-blood-pressure-surge/index.md",
    "title": "Morning blood pressure surge: why your diary should split the day",
    "description": "Learn why blood pressure can rise after waking, how to separate morning and evening readings, and which patterns need prompt medical attention.",
    "answers": "morning blood pressure surge",
    "published": "2026-07-26",
    "modified": "2026-07-26",
    "faq_questions": [
     "Why is my blood pressure spiking in the morning?",
     "Is morning blood pressure surge normal?",
     "Is it normal to wake up with high blood pressure in the morning?",
     "When should I take morning blood pressure readings?",
     "What is normal blood pressure in the morning?",
     "What does high blood pressure in the morning and low in the evening mean?",
     "What is a normal morning surge index?",
     "Is high blood pressure in the morning dangerous?"
    ]
   },
   {
    "slug": "pulse-pressure",
    "url": "https://tonelva.com/vitals/pulse-pressure/",
    "markdown": "https://tonelva.com/vitals/pulse-pressure/index.md",
    "title": "Pulse pressure: the number your monitor never shows you",
    "description": "Learn how to calculate pulse pressure, compare American and European blood pressure categories, understand wide or narrow readings, and track useful home trends.",
    "answers": "pulse pressure",
    "published": "2026-07-23",
    "modified": "2026-07-23",
    "faq_questions": [
     "What does pulse pressure indicate?",
     "What is a normal pulse pressure by age?",
     "What is more important, blood pressure or pulse pressure?",
     "Is a pulse pressure of 27 good?",
     "What is the pulse pressure formula?",
     "What does a wide pulse pressure mean?",
     "What does a narrow pulse pressure mean?",
     "Can a phone measure pulse pressure or blood pressure?"
    ]
   },
   {
    "slug": "what-throws-off-a-blood-pressure-reading",
    "url": "https://tonelva.com/vitals/what-throws-off-a-blood-pressure-reading/",
    "markdown": "https://tonelva.com/vitals/what-throws-off-a-blood-pressure-reading/index.md",
    "title": "What throws off a blood pressure reading: 14 causes",
    "description": "Find out what throws off a blood pressure reading, including cuff fit, posture, caffeine, stress, and device problems, with steps for cleaner home readings.",
    "answers": "what throws off a blood pressure reading",
    "published": "2026-07-30",
    "modified": "2026-07-30",
    "faq_questions": [
     "When is the most accurate time to take blood pressure?",
     "How do I tell if my blood pressure reading is accurate?",
     "Why is my blood pressure reading wrong when I feel fine?",
     "Can I check my blood pressure without a machine?",
     "How often should I check my blood pressure?",
     "How does cuff size affect blood pressure accuracy?",
     "How do I read a digital blood pressure monitor?",
     "What should the bottom number be on a blood pressure check?"
    ]
   },
   {
    "slug": "white-coat-hypertension",
    "url": "https://tonelva.com/vitals/white-coat-hypertension/",
    "markdown": "https://tonelva.com/vitals/white-coat-hypertension/index.md",
    "title": "White coat hypertension: when the clinic reading is higher",
    "description": "Learn how white coat and masked hypertension differ, how American and European categories compare, and how to collect reliable home readings without panic.",
    "answers": "white coat hypertension",
    "published": "2026-07-25",
    "modified": "2026-07-25",
    "faq_questions": [
     "How do you fix white coat hypertension?",
     "How serious is white coat hypertension?",
     "What is the opposite of white coat hypertension?",
     "Can white coat hypertension be cured?",
     "What is white coat hypertension treatment?",
     "Can anxiety cause high blood pressure only at the doctor?",
     "How can I stop worrying about my blood pressure?",
     "What is severe white coat hypertension?"
    ]
   }
  ],
  "compare": [
   {
    "slug": "tonelva-vs-blood-pressure-log-feeltracker",
    "url": "https://tonelva.com/compare/tonelva-vs-blood-pressure-log-feeltracker/",
    "markdown": "https://tonelva.com/compare/tonelva-vs-blood-pressure-log-feeltracker/index.md",
    "title": "Tonelva vs Blood Pressure Log Feeltracker",
    "published": "2026-07-31",
    "modified": "2026-07-31"
   },
   {
    "slug": "tonelva-vs-blood-pressure-log-heart-rate",
    "url": "https://tonelva.com/compare/tonelva-vs-blood-pressure-log-heart-rate/",
    "markdown": "https://tonelva.com/compare/tonelva-vs-blood-pressure-log-heart-rate/index.md",
    "title": "Tonelva vs Blood Pressure Log, Heart Rate",
    "published": "2026-07-31",
    "modified": "2026-07-31"
   },
   {
    "slug": "tonelva-vs-blood-pressure-tracker",
    "url": "https://tonelva.com/compare/tonelva-vs-blood-pressure-tracker/",
    "markdown": "https://tonelva.com/compare/tonelva-vs-blood-pressure-tracker/index.md",
    "title": "Tonelva vs Blood Pressure Tracker •",
    "published": "2026-07-31",
    "modified": "2026-07-31"
   },
   {
    "slug": "tonelva-vs-blood-pressure-tracker-smartbp",
    "url": "https://tonelva.com/compare/tonelva-vs-blood-pressure-tracker-smartbp/",
    "markdown": "https://tonelva.com/compare/tonelva-vs-blood-pressure-tracker-smartbp/index.md",
    "title": "Tonelva vs Blood Pressure Tracker SmartBP",
    "published": "2026-07-31",
    "modified": "2026-07-31"
   },
   {
    "slug": "tonelva-vs-bp-diary-self-monitoring",
    "url": "https://tonelva.com/compare/tonelva-vs-bp-diary-self-monitoring/",
    "markdown": "https://tonelva.com/compare/tonelva-vs-bp-diary-self-monitoring/index.md",
    "title": "Tonelva vs BP diary (self-monitoring)",
    "published": "2026-07-31",
    "modified": "2026-07-31"
   },
   {
    "slug": "tonelva-vs-omron-connect-us-can-emea",
    "url": "https://tonelva.com/compare/tonelva-vs-omron-connect-us-can-emea/",
    "markdown": "https://tonelva.com/compare/tonelva-vs-omron-connect-us-can-emea/index.md",
    "title": "Tonelva vs OMRON connect US/CAN/EMEA",
    "published": "2026-07-31",
    "modified": "2026-07-31"
   }
  ]
 }
}