---
title: Blood Pressure
slug: blood-pressure
docTags: 
createdAt: 2021-08-17T00:37:20.000Z
---

| **Data Type**      | Vital Sign, Health Indicator                                                                                                                                                                                                                                                     |
| ------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Scans Required** | FaceScan                                                                                                                                                                                                                                                                         |
| **Source**         | AHF “[Understanding Blood Pressure Readings](https://www.heart.org/en/health-topics/high-blood-pressure/understanding-blood-pressure-readings)”                                                                                                                                  |
| **Outputs**        | Systolic, Diastolic                                                                                                                                                                                                                                                              |
| **Source**         | Preliminary assessment of video-based blood pressure measurement according to ANSI/AAMI/ISO81060-2: 2013 guideline accuracy criteria: Anura smartphone app with transdermal optimal imaging technology. [Blood Pressure Monitoring.](https://pubmed.ncbi.nlm.nih.gov/32842022/)  |
| **Validation**     | Self-validated.<br />Association for the Advancement of Medical Instrumentation (AAMI)/ANSI/ISO 81060-2:2013 blood pressure device validation standard.                                                                                                                          |

## About Blood Pressure


Blood Pressure consists of **Systolic** and **Diastolic** readings and is usually written as two numbers Systolic / Diastolic e.g. 140/90 mmHg


- **Systolic blood pressure** (the first number) – indicates how much pressure your blood is exerting against your artery walls when the heart beats.
- **Diastolic blood pressure** (the second number) – indicates how much pressure your blood is exerting against your artery wall&#x73;**&#x20;while the heart is resting between beats.**
- Typically, more attention is given to systolic blood pressure as a major risk factor for CVD for people over 50. 
- Either an elevated systolic or an elevated diastolic blood pressure reading may be used to make a diagnosis of high blood pressure. 
- The risk of death from ischemic heart disease and stroke doubles with every 20 mm Hg systolic or 10 mm Hg diastolic increase among people from age 40 to 89.



## Risk Categories

These categories are based on the [American Heart Foundation's classification](https://www.heart.org/en/health-topics/high-blood-pressure/understanding-blood-pressure-readings).

| **Blood Pressure Category**                             | **Systolic (mmHg)&#x20;**&#x54;op number |        | **Diastolic (mmHg)&#x20;**&#x42;ottom number |
| ------------------------------------------------------- | ---------------------------------------- | ------ | -------------------------------------------- |
| <font color="#82d89e">◉</font> **Hypotensive**          | 0 to \< 90.00                            | or     | 0 to \< 60.00                                |
| <font color="#34c759">◉</font> **Normal**               | 90.00 to \< 120.00                       | and    | 60.00 to \< 80.00                            |
| <font color="#82d89e">◉</font> **Elevated**             | 120.00 to \< 130.00                      | and    | \< 80.00                                     |
| <font color="#ff9500">◉</font> **Hypertension Stage 1** | 130.00 to \< 140.00                      | or     | 80.00 to \< 90.00                            |
| <font color="#ff3b30">◉</font> **Hypertension Stage 2** | 140.00 to \< 180.00                      | or     |  > 90.00                                     |
| <font color="#ac0d0d">◉</font> **Hypertensive Crisis**  | Higher than 180.00                       | and/or | Higher than 120.00                           |