The frequency, which is similar to the rate, is measured in hertz. There are rules by which to choose the setting for the hertz. Multiply the number of hertz times 60 and the exact rate is calculated. Below is a chart for determining initial hertz settings. This table is taken from the recommendations by Sensormedics for use with the 3100A high frequency oscillating ventilator.
Settings depend on the size of the patient and the disease process.
When initiating high frequency ventilation in the pediatric patient, begin with a hertz such as 6 or 7. This will allow for the greater lung capacity and lung volumes of older patients. When ventilating the pediatric patient, adequate cardiac output must be maintained. The blood pressure must be within acceptable parameters. Without adequate circulation, there cannot be adequate tissue oxygenation.