Blood Pressure by Age Calculator
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Blood Pressure by Age Calculator
Your Blood Pressure Category
—
Understanding Blood Pressure and Age
Blood pressure is a vital sign that measures the force of blood pushing against the walls of your arteries. It's recorded as two numbers: systolic pressure (the top number) and diastolic pressure (the bottom number). For example, 120/80 mmHg.
Why Age Matters
While blood pressure can fluctuate throughout the day, certain ranges are considered normal, elevated, or indicative of hypertension (high blood pressure). Age is a significant factor because arteries tend to stiffen and narrow over time, potentially leading to higher blood pressure readings. Understanding your blood pressure in relation to your age is crucial for maintaining cardiovascular health.
How This Calculator Works
This calculator uses standard guidelines to categorize your blood pressure based on your systolic and diastolic readings. While age is a general risk factor, the primary classification of blood pressure is determined by the measured pressure values themselves, rather than a strict age-based formula for categorization. However, general expectations for "normal" or "ideal" blood pressure can vary slightly with age. This calculator provides a current assessment based on standard categories.
The categories are generally defined as follows (note that these are guidelines and individual medical advice should always be sought):
- Normal: Less than 120 systolic AND less than 80 diastolic.
- Elevated: 120–129 systolic AND less than 80 diastolic.
- Hypertension Stage 1: 130–139 systolic OR 80–89 diastolic.
- Hypertension Stage 2: 140 or higher systolic OR 90 or higher diastolic.
- Hypertensive Crisis: Higher than 180 systolic AND/OR higher than 120 diastolic. This requires immediate medical attention.
Important Considerations:
- Individual Variation: Blood pressure readings can be influenced by many factors including stress, physical activity, medication, and overall health.
- Medical Advice: This calculator is for informational purposes only and does not substitute professional medical advice. Always consult with your doctor for diagnosis and treatment.
- Trends Over Time: Monitoring your blood pressure over time is more important than a single reading.
By inputting your age, systolic pressure, and diastolic pressure, this tool helps you understand where your current readings fall within these common categories, aiding in your awareness of cardiovascular health.
function calculateBloodPressure() {
var ageInput = document.getElementById("age");
var systolicInput = document.getElementById("systolic");
var diastolicInput = document.getElementById("diastolic");
var resultDiv = document.getElementById("result");
var age = parseFloat(ageInput.value);
var systolic = parseFloat(systolicInput.value);
var diastolic = parseFloat(diastolicInput.value);
var category = "";
var message = "";
var resultClass = "";
// Input validation
if (isNaN(age) || isNaN(systolic) || isNaN(diastolic) || age <= 0 || systolic <= 0 || diastolic = 180 || diastolic >= 120) {
category = "Hypertensive Crisis";
message = "Systolic >= 180 or Diastolic >= 120";
resultClass = "crisis";
} else if (systolic >= 140 || diastolic >= 90) {
category = "Hypertension Stage 2";
message = "Systolic >= 140 or Diastolic >= 90";
resultClass = "stage2";
} else if (systolic >= 130 || diastolic >= 80) {
category = "Hypertension Stage 1";
message = "Systolic 130-139 or Diastolic 80-89";
resultClass = "stage1";
} else if (systolic >= 120 && diastolic < 80) {
category = "Elevated";
message = "Systolic 120-129 and Diastolic < 80";
resultClass = "elevated";
} else {
category = "Normal";
message = "Systolic < 120 and Diastolic < 80";
resultClass = "normal";
}
// Display the result
resultDiv.innerHTML = category + "
" + message + "";
resultDiv.className = resultClass; // Apply the specific class for styling
}