This calculator helps you determine the correct infusion rate for a Heparin drip. Heparin is an anticoagulant medication used to prevent blood clots. Accurate dosing is crucial for patient safety and therapeutic efficacy.
.heparin-calculator {
font-family: Arial, sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 400px;
margin: 20px auto;
background-color: #f9f9f9;
}
.heparin-calculator h2 {
text-align: center;
margin-bottom: 20px;
color: #333;
}
.calculator-inputs {
margin-bottom: 20px;
}
.input-group {
margin-bottom: 15px;
display: flex;
flex-direction: column;
}
.input-group label {
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.input-group input[type="number"] {
padding: 10px;
border: 1px solid #ddd;
border-radius: 4px;
font-size: 1em;
width: calc(100% – 22px); /* Adjust for padding and border */
}
.heparin-calculator button {
display: block;
width: 100%;
padding: 12px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 1.1em;
cursor: pointer;
transition: background-color 0.3s ease;
}
.heparin-calculator button:hover {
background-color: #0056b3;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e7f3fe;
border-left: 6px solid #2196F3;
border-radius: 4px;
font-size: 1.1em;
color: #333;
text-align: center;
}
.calculator-result strong {
color: #0056b3;
}
function calculateHeparinRate() {
var heparinDose = parseFloat(document.getElementById("heparinDose").value);
var desiredRate = parseFloat(document.getElementById("desiredRate").value);
var infusionVolume = parseFloat(document.getElementById("infusionVolume").value);
var resultElement = document.getElementById("result");
if (isNaN(heparinDose) || isNaN(desiredRate) || isNaN(infusionVolume)) {
resultElement.innerHTML = "Error: Please enter valid numbers for all fields.";
return;
}
if (heparinDose <= 0 || desiredRate <= 0 || infusionVolume <= 0) {
resultElement.innerHTML = "Error: Please enter positive values for all fields.";
return;
}
// Formula: (Desired Dose (Units/hr) / Heparin Concentration (Units/mL)) = mL/hr
var infusionRateMLPerHour = desiredRate / heparinDose;
// Sanity check: is the rate reasonable given the total volume?
// This calculation is for mL/hr. The question implies we need mL/hr, which is standard for drip rates.
// If total volume is very small and desired rate very high, it might suggest an issue.
// However, for a standard calculator, directly calculating mL/hr is sufficient.
resultElement.innerHTML = "The recommended drip rate is: " + infusionRateMLPerHour.toFixed(2) + " mL/hr";
}