Respiration Rate Calculation

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Respiration Rate Calculator

Calculate breaths per minute (BPM) based on a timed observation.

Count the number of chest rises within the time period.
15 Seconds 30 Seconds 60 Seconds (1 Minute) 10 Seconds (Quick check)
Select how long you observed the patient's breathing.
Adult (18+ years) Child (6-12 years) Toddler (1-3 years) Infant (0-1 year)
Used to determine if the rate is within normal range.
Calculated Respiratory Rate
0 BPM

What is Respiration Rate?

The respiration rate, also known as the respiratory rate, is the number of breaths a person takes per minute. It is one of the four primary vital signs, along with body temperature, blood pressure, and heart rate. Measuring the respiratory rate is a critical diagnostic tool used to assess general health and detect potential medical issues such as respiratory distress, infection, or metabolic imbalances.

How to Calculate Respiratory Rate

The standard unit of measurement is Breaths Per Minute (BPM). To calculate this manually:

  1. Have the person sit or lie down comfortably. It is best if they are unaware you are counting, as awareness can alter breathing patterns.
  2. Observe the chest rising and falling. One complete cycle of rising and falling counts as one breath.
  3. Count the breaths for a specific duration (usually 15, 30, or 60 seconds).
  4. Use the calculator above or multiply accordingly:
    • If counting for 15 seconds, multiply by 4.
    • If counting for 30 seconds, multiply by 2.
    • If counting for 60 seconds, the count is the rate.

Normal Respiratory Rate Ranges

Respiration rates change drastically as we age. Infants breathe much faster than adults. Below is a reference table for normal resting respiratory rates:

Age Group Normal Range (BPM)
Newborns / Infants (0-1 year) 30 – 60 BPM
Toddlers (1-3 years) 24 – 40 BPM
Preschoolers (3-6 years) 22 – 34 BPM
School-age Children (6-12 years) 18 – 30 BPM
Adolescents (12-18 years) 12 – 16 BPM
Adults (18+ years) 12 – 20 BPM
Elderly (65+ years) 12 – 28 BPM

Understanding the Results

Eupnea (Normal): The breathing rate is within the expected range for the person's age, typically regular and effortless.

Tachypnea (High): A respiratory rate higher than normal. This can be caused by fever, anxiety, exercise, respiratory infections (like pneumonia or COVID-19), or heart problems.

Bradypnea (Low): A respiratory rate lower than normal. This can be caused by excessive sedation, head injuries, hypothermia, or drug overdoses (particularly opioids).

When to Seek Medical Help

You should contact a healthcare provider immediately if the respiratory rate is significantly outside the normal range, or if it is accompanied by symptoms such as chest pain, bluish lips or nails (cyanosis), wheezing, or high fever.

function calculateRespiration() { // Get input values using var var breathsInput = document.getElementById('breathsCounted'); var timeInput = document.getElementById('timePeriod'); var patientInput = document.getElementById('patientType'); var resultArea = document.getElementById('result-area'); var bpmDisplay = document.getElementById('bpmResult'); var statusDisplay = document.getElementById('statusMessage'); var noteDisplay = document.getElementById('clinicalNote'); var breaths = parseFloat(breathsInput.value); var seconds = parseFloat(timeInput.value); var patientType = patientInput.value; // Validation logic if (isNaN(breaths) || breaths <= 0) { alert("Please enter a valid number of breaths counted."); return; } if (isNaN(seconds) || seconds <= 0) { alert("Please select a valid time duration."); return; } // Calculation: (Breaths / Seconds) * 60 var bpm = (breaths / seconds) * 60; bpm = Math.round(bpm); // Round to nearest whole number // Display BPM bpmDisplay.innerHTML = bpm + " BPM"; resultArea.style.display = "block"; resultArea.style.backgroundColor = "#f8f9fa"; // Determine Range based on Age var status = ""; var cssClass = ""; var minNormal = 0; var maxNormal = 0; // Reference ranges if (patientType === 'adult') { minNormal = 12; maxNormal = 20; } else if (patientType === 'child') { // 6-12 years minNormal = 18; maxNormal = 30; } else if (patientType === 'toddler') { // 1-3 years minNormal = 24; maxNormal = 40; } else if (patientType === 'infant') { // 0-1 year minNormal = 30; maxNormal = 60; } // Determine Status if (bpm maxNormal) { status = "Tachypnea (High)"; cssClass = "status-danger"; noteDisplay.innerHTML = "This rate is above the normal range (" + minNormal + "-" + maxNormal + " BPM) for this age group."; } else { status = "Normal Range"; cssClass = "status-normal"; noteDisplay.innerHTML = "This rate is within the normal range (" + minNormal + "-" + maxNormal + " BPM) for this age group."; } // Apply Status styles statusDisplay.className = "result-status " + cssClass; statusDisplay.innerHTML = status; }

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