Airway Management

Airway Management
2 mn read

What is your opinion on the use of saline during suctioning? Are there any instances when the use of saline during suctioning is acceptable? 

While normal saline is widely used by respiratory therapists and nurses, this action is not recommended for use during suctioning of the endotracheal tubes in neonates. Historically speaking, suctioning the endotracheal tube has been extensively used in the removal of pulmonary secretions that can potentially block the endotracheal tube (Morrow, & Argent, 2015). Such blockage could result in the impairment of air exchange in patients of all ages who are placed on tubes.

According to patients who have undergone endotracheal suctioning, this experience is very painful and profoundly unpleasant. One of these patients made a report that the experience was rated a 10 of 10 on the scale of its pain rating. They described this experience of having saline instillation as one where they felt like “like they were drowning.” The suction catheter would then be shoved into the patient until the tube made the patient cough against the endotracheal tube. This experience, according to the patient, was very excruciating. Furthermore, every bit of breath remaining in the patient is then sucked out (“Saline Instillation: Helpful or Harmful?” 2018). Why take a patient through all this pain and struggle?

This being a very painful and distressing intervention, it should be performed with discretion and thought. It is important to first look out for the indications of suctioning and ensure that you explain to the patient all the expected outcome of the procedure. Once the patient is informed of the risks and/or negative effects of the intervention, then they can be left under the discretion to decide whether they want to undergo the same(Molnar, 2018).

In some situations, the use of saline during the suctioning is acceptable, where it is used well. In this case, the saline is used to loosen and moisturize dried secretions and to thin out tenacious or thick secretions that are within the ET tube to mobilize and assist in the removal of the same. Practitioners usually instill a tiny amount (about 0.2 to 5 mL) of sterile normal saline before inserting the suction catheter (“Saline Instillation: Helpful or Harmful?” 2018). However, there is still the question of whether there is enough evidence that proves that saline instillation is an efficient process and if it should be incorporated when suctioning the endotracheal tube of the neonate.

A national survey of the pediatric intensive care unit performed in 1996 showed that virtually all of these nurses make use of the saline irrigant during the suctioning process. This study of the ET tube suctioning procedures in adult critical care units revealed that approximately 75 percent of suctioning policies always incorporate the use of normal saline in cases of thick secretions. Another survey in a large university hospital showed that about 71 percent of respiratory therapists usually instilled saline before suctioning (Molnar, 2018). Conversely, a majority of nurses seldom used it. From this data, it is evident that no standardized practice has been incorporated for saline instillation.

Scientific evidence shows that there might be no positive effect of using saline instillation because it does not improve pulmonary function. It is also proven that it is not efficient in thinning secretions or facilitate their removal. It is sad to note that the practice persists despite the numerous risks that are associated with it. My opinion about the use of saline during suction is that it should not be used because there is no research-based evidence for it.

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