How do you choose the size of suction catheter to be use on patient?

The size of the suction catheter to be used on a patient depends on several factors, including the patient's age, the location and size of the airway to be suctioned, and the amount of secretions that need to be removed. Here's a general guide to help you choose the appropriate suction catheter size:

1. Age and Size of the Patient:

- Infants: For newborns and small infants, a suction catheter with a diameter of 5 French (Fr) or 6 Fr is typically used.

- Children: As the child grows, the appropriate catheter size increases. A 6 Fr to 8 Fr catheter may be suitable for young children, while older children may require a 10 Fr to 12 Fr catheter.

- Adults: Adults generally require a larger catheter, typically ranging from 12 Fr to 16 Fr.

2. Location and Size of the Airway:

- Oropharynx: For suctioning the mouth and throat, a catheter with a curved tip and a size of 10 Fr to 14 Fr may be appropriate.

- Nasopharynx: When suctioning through the nose, a smaller catheter with a diameter of 6 Fr to 8 Fr is usually preferred to prevent discomfort and trauma.

- Tracheobronchial Tree: For suctioning deeper into the respiratory tract, such as the trachea or bronchi, larger catheters are used. Sizes ranging from 14 Fr to 16 Fr are commonly used for adults, while smaller catheters (10 Fr to 12 Fr) may be needed for children.

3. Amount of Secretions:

- Thin Secretions: If the secretions are thin and can be easily removed, a smaller catheter may be sufficient.

- Thick or Excessive Secretions: For thick or excessive secretions, a larger catheter may be necessary to ensure effective suctioning.

It's important to consult with the healthcare provider or respiratory therapist involved in the patient's care to determine the most appropriate suction catheter size based on their individual needs and condition. They can provide guidance on selecting the correct size and technique to ensure safe and effective suctioning.