Closed-system suctioning triggered a sharp but short-lived rise in patient-reported dyspnea even as oxygen saturation went up
AI-summarized from the linked source. Educational brief, not medical advice.
Brief summary
In a prospective self-controlled study of 42 awake mechanically ventilated ICU patients, closed-system suctioning was followed by a sharp rise in self-reported dyspnea that largely resolved within 5 minutes, and this worsening occurred even though oxygen saturation went up.
What NurseJet pulled from the source
Endotracheal suctioning is a routine airway care procedure in mechanically ventilated patients, but its immediate effect on how breathless patients feel has not been well quantified. In this prospective self-controlled observational study conducted from May to October 2025 in a tertiary ICU in Sichuan Province, China, awake mechanically ventilated adults with a Richmond Agitation-Sedation Scale score of 0 to +1 who required closed-system suctioning were enrolled. Dyspnea was assessed with the Dyspnea Visual Analog Scale (D-VAS, 0 to 10) before suctioning (T0), immediately after (T1), and 5 minutes after (T2), while peripheral oxygen saturation (SpO2) and heart rate were recorded at the same times. Fifty-three suctioning procedures from 42 patients were included. D-VAS scores rose from 2.8 plus or minus 1.9 at T0 to 6.4 plus or minus 2.1 at T1 (mean increase 3.6, 95 percent CI 3.1 to 4.1, P less than 0.001), then fell to 3.2 plus or minus 1.7 at T2 (P less than 0.001 versus T1). Dyspnea worsened in 92.5 percent of procedures at T1, and 15.1 percent had not returned to baseline at T2. Even though SpO2 rose from 97.2 plus or minus 2.1 percent to 99.1 plus or minus 1.3 percent at T1, dyspnea worsened substantially, pointing to a possible dissociation between oxygenation and subjective respiratory distress. The authors conclude that closed-system suctioning may cause clinically significant but transient worsening of dyspnea that appears independent of oxygenation, and that individual dyspnea assessment during routine suctioning warrants attention, while noting the study was a single-center convenience sample.
Why this matters for nurses
Suctioning is one of the most frequent things ICU nurses do for ventilated patients, and it is easy to assume that a stable or rising oxygen saturation means the patient is comfortable. This study may matter for critical care nurses because it shows that awake ventilated patients can feel markedly more breathless right after suctioning even when their SpO2 improves.
Bedside takeaway
Worth knowing that in a small ICU study, closed-system suctioning caused a sharp but short-lived rise in patient-reported breathlessness even as oxygen saturation rose, so a good SpO2 may not mean an awake ventilated patient feels comfortable.
Key takeaways
- Across 53 closed-system suctioning procedures in 42 awake ventilated ICU patients, self-reported dyspnea rose sharply immediately after suctioning (D-VAS 2.8 to 6.4, mean increase 3.6, P less than 0.001) and largely settled by 5 minutes (3.2).
- Dyspnea worsened in 92.5 percent of procedures right after suctioning, and 15.1 percent had not returned to baseline 5 minutes later.
- Oxygen saturation actually increased with suctioning (97.2 percent to 99.1 percent), yet patients still felt more breathless, suggesting SpO2 and subjective distress can move in opposite directions.
- The authors call the worsening clinically significant but transient and recommend assessing individual patients' dyspnea during routine suctioning.
Practice implications
- For ICU nurses, the findings suggest watching for and, where possible, asking about breathlessness around suctioning rather than relying on the oxygen saturation number alone, since most patients in this study felt worse immediately afterward. Knowing the distress is usually brief but occasionally lingers can support brief reassurance and reassessment before assuming an awake ventilated patient is at ease.
Limitations & cautions
- This was a single-center convenience sample of only 42 patients and 53 procedures, with no prospective sample size calculation and a one-dimensional dyspnea scale, so the estimates are preliminary. It enrolled only awake, lightly sedated patients able to self-report, so the findings may not apply to more deeply sedated patients, and confirmatory multicenter studies are needed.
- AI-summarized from the linked source. Review the original article before applying to practice.
Citations
Exact source links
Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.
Frontiers in Medicine (PubMed)
Frontiers in Medicine (PubMed). Impact of closed-system suctioning on self-reported dyspnea in mechanically ventilated patients: a prospective observational study.
https://pubmed.ncbi.nlm.nih.gov/42415791/
Professional education only
