BP MAP Calculator
The Mean Arterial Pressure (MAP) is a crucial medical parameter that represents the average arterial pressure during a single cardiac cycle. It is considered a better indicator of perfusion to vital organs than systolic blood pressure alone, as it takes into account both systolic and diastolic pressures, as well as the duration of each phase of the cardiac cycle.
Maintaining an adequate MAP is essential for ensuring that organs like the brain, kidneys, and heart receive sufficient blood flow. A MAP typically between 70 and 100 mmHg is considered ideal for most adults, though target ranges can vary based on individual health conditions and medical contexts.
This calculator helps you quickly determine your MAP using your systolic and diastolic blood pressure readings. The formula used is: MAP = Diastolic Blood Pressure + 1/3 * (Systolic Blood Pressure – Diastolic Blood Pressure).
Understanding Your MAP Results
A normal MAP range is generally considered to be between 70 and 100 mmHg. However, these values can vary based on age, health conditions, and medical guidance. For instance:
- MAP below 60-65 mmHg: May indicate insufficient blood flow to vital organs, potentially leading to organ damage. This is often a concern in critical care settings.
- MAP above 100-105 mmHg: Can indicate hypertension or excessive pressure on the arteries, increasing the risk of cardiovascular disease over time.
Always consult with a healthcare professional to interpret your blood pressure readings and MAP in the context of your overall health.
Examples:
- Example 1: If your Systolic BP is 120 mmHg and Diastolic BP is 80 mmHg:
MAP = 80 + 1/3 * (120 – 80) = 80 + 1/3 * 40 = 80 + 13.33 = 93.33 mmHg
- Example 2: If your Systolic BP is 140 mmHg and Diastolic BP is 90 mmHg:
MAP = 90 + 1/3 * (140 – 90) = 90 + 1/3 * 50 = 90 + 16.67 = 106.67 mmHg
- Example 3: If your Systolic BP is 100 mmHg and Diastolic BP is 60 mmHg:
MAP = 60 + 1/3 * (100 – 60) = 60 + 1/3 * 40 = 60 + 13.33 = 73.33 mmHg
.bp-map-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 25px;
background: #f9f9f9;
border-radius: 10px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
color: #333;
}
.bp-map-calculator-container h1,
.bp-map-calculator-container h2,
.bp-map-calculator-container h3 {
color: #2c3e50;
text-align: center;
margin-bottom: 20px;
}
.bp-map-calculator-container p {
line-height: 1.6;
margin-bottom: 15px;
text-align: justify;
}
.calculator-form {
background: #ffffff;
padding: 25px;
border-radius: 8px;
border: 1px solid #e0e0e0;
margin-bottom: 25px;
}
.form-group {
margin-bottom: 18px;
display: flex;
flex-direction: column;
}
.form-group label {
margin-bottom: 8px;
font-weight: bold;
color: #555;
}
.form-group input[type="number"] {
width: 100%;
padding: 12px;
border: 1px solid #ccc;
border-radius: 5px;
box-sizing: border-box;
font-size: 16px;
-moz-appearance: textfield; /* Firefox */
}
.form-group input[type="number"]::-webkit-outer-spin-button,
.form-group input[type="number"]::-webkit-inner-spin-button {
-webkit-appearance: none;
margin: 0;
}
.calculate-button {
display: block;
width: 100%;
padding: 14px 20px;
background-color: #3498db;
color: white;
border: none;
border-radius: 5px;
font-size: 18px;
cursor: pointer;
transition: background-color 0.3s ease;
margin-top: 20px;
}
.calculate-button:hover {
background-color: #2980b9;
}
.result-container {
margin-top: 25px;
padding-top: 20px;
border-top: 1px solid #eee;
text-align: center;
}
.result-container h2 {
color: #2c3e50;
font-size: 22px;
margin-bottom: 15px;
}
.result-output {
font-size: 28px;
font-weight: bold;
color: #27ae60;
background-color: #eaf7ed;
padding: 15px 20px;
border-radius: 8px;
display: inline-block;
min-width: 150px;
text-align: center;
}
.bp-map-calculator-container ul {
list-style-type: disc;
margin-left: 20px;
margin-bottom: 15px;
}
.bp-map-calculator-container ul li {
margin-bottom: 8px;
line-height: 1.5;
}
function calculateMAP() {
var systolicBPInput = document.getElementById("systolicBP");
var diastolicBPInput = document.getElementById("diastolicBP");
var mapResultDiv = document.getElementById("mapResult");
var systolicBP = parseFloat(systolicBPInput.value);
var diastolicBP = parseFloat(diastolicBPInput.value);
if (isNaN(systolicBP) || isNaN(diastolicBP) || systolicBP <= 0 || diastolicBP <= 0) {
mapResultDiv.innerHTML = "Please enter valid positive numbers for both blood pressure readings.";
mapResultDiv.style.color = "#e74c3c";
mapResultDiv.style.backgroundColor = "#fdeded";
return;
}
if (systolicBP < diastolicBP) {
mapResultDiv.innerHTML = "Systolic BP cannot be less than Diastolic BP.";
mapResultDiv.style.color = "#e74c3c";
mapResultDiv.style.backgroundColor = "#fdeded";
return;
}
// MAP = Diastolic Blood Pressure + 1/3 * (Systolic Blood Pressure – Diastolic Blood Pressure)
var map = diastolicBP + (1/3) * (systolicBP – diastolicBP);
mapResultDiv.innerHTML = map.toFixed(2) + " mmHg";
mapResultDiv.style.color = "#27ae60";
mapResultDiv.style.backgroundColor = "#eaf7ed";
}