Post-Operative Pulmonary Hygiene Recommendations

Risk Assessment for Pulmonary Complications

• The American College of Physicians recommends that patients at high risk for postoperative pulmonary complications should receive multimodal pulmonary hygiene, including deep breathing exercises or incentive spirometry, early mobilization, and selective use of nasogastric tubes to reduce morbidity and mortality, particularly for those with chronic obstructive pulmonary disease, age >60 years, American Society of Anesthesiologists (ASA) class II or greater, functionally dependent status, congestive heart failure, or low serum albumin (<35 g/L) 1
• Patient-related risk factors for pulmonary complications include chronic obstructive pulmonary disease, age >60 years, American Society of Anesthesiologists (ASA) class II or greater, functionally dependent status, congestive heart failure, and low serum albumin (<35 g/L), according to the American Thoracic Society 2

Core Pulmonary Hygiene Interventions

• The Centers for Disease Control and Prevention recommends instructing patients to perform deep breathing exercises hourly while awake, with a frequency of 30 deep breaths per hour, to improve oxygenation outcomes 3, 4
• The American Society of Anesthesiologists recommends beginning early mobilization as soon as medically indicated after surgery, progressing from moving in bed to sitting, standing, and walking, and combining with breathing exercises for optimal effect 3, 5, 6
• The American College of Chest Physicians recommends using incentive spirometry for patients at high risk for pneumonia, instructing patients to use it hourly while awake, and considering its use in combination with deep breathing exercises 3, 4
• The Society of Critical Care Medicine recommends teaching supported coughing (splinting incision site) and including it as part of multimodal management, particularly for patients with respiratory complications 5, 6

Special Considerations

• The European Respiratory Society recommends implementing postoperative multimodal physiotherapy, combining early mobilization, breathing exercises, and bronchial drainage techniques, for thoracic surgery patients 5, 6
• The American Heart Association recommends considering positive expiratory pressure (PEP) devices on a case-by-case basis, but not as isolated therapy, and ensuring adequate pain management to facilitate effective deep breathing for cardiac surgery patients 5
• The Centers for Disease Control and Prevention recommends using chlorhexidine oral rinse (0.12%) during the perioperative period for cardiac surgery patients 3

Implementation Tips

• The Joint Commission recommends preoperative education as essential for patients at high risk for complications, and ensuring proper technique through demonstration and supervision 3, 1

Common Pitfalls to Avoid

• The American Society of Anesthesiologists recommends avoiding relying solely on one intervention (e.g., incentive spirometry alone) instead of a multimodal approach, delaying mobilization, inadequate pain control, routine use of nasogastric tubes, and overreliance on preoperative spirometry or chest radiography for risk prediction 5, 6, 3, 1

Use of Intensive Spirometry in Post-Laparotomy Patients

Evidence-Based Recommendation

• The American College of Physicians guidelines establish that any lung expansion modality is superior to no prophylaxis after abdominal surgery, but no single technique clearly outperforms the others 7, 8
• Incentive spirometry alone provides no additional benefit over deep breathing exercises, but both are effective when properly implemented 7, 8

High-Risk Patient Identification

• Post-laparotomy patients warrant intensive pulmonary hygiene if they have age >60 years, which is the strongest patient-related risk factor 9
• Patients with ASA class II or higher, chronic obstructive pulmonary disease, functional dependence, or congestive heart failure also require intensive pulmonary hygiene 9
• Low serum albumin (<35 g/L) is one of the most powerful predictors of pulmonary complications in post-laparotomy patients 9
• Emergency surgery increases the risk of pulmonary complications, with an odds ratio of 4.47 10
• Prolonged surgery (>3-4 hours) also increases the risk of pulmonary complications, with an odds ratio of 2.14 9

Implementation Protocol

• Deep breathing exercises are more labor-efficient than incentive spirometry alone and should be combined with supported coughing (splinting incision) 8
• Neuraxial blockade reduces the risk of pneumonia, with an odds ratio of 0.61 8
• The ERAS Society guidelines recommend considering NIPPV or CPAP for hypoxemic patients immediately post-extubation, rather than incentive spirometry 10
• CPAP at 8 cm H₂O for 8-12 hours postoperatively may be beneficial in high-risk patients 11
• Therapeutic NIV reduces reintubation and healthcare-associated infections in acute respiratory failure 10

Nasogastric Tube Management

• Selective rather than routine nasogastric decompression should be used, with insertion only if postoperative nausea, vomiting, or symptomatic distention occurs 7
• Selective use of nasogastric tubes significantly reduces pneumonia and atelectasis rates compared to routine placement 7

Critical Pitfalls to Avoid

• Relying on incentive spirometry alone without deep breathing exercises and mobilization is a common pitfall 7
• Routine nasogastric tube placement increases pulmonary complications 7
• Using preoperative spirometry for risk prediction does not translate to effective individual risk assessment 9, 12

Incentive Spirometry as Part of Multimodal Respiratory Care for High‑Risk Surgical Patients

Efficacy Within Multimodal Care

• Incentive spirometry alone does not reduce postoperative pulmonary complications compared with deep‑breathing exercises, but when incorporated into a multimodal program (deep breathing, early mobilization, supported coughing, adequate analgesia) it lowers rates of atelectasis and pneumonia in high‑risk surgical patients. Strong evidence. 13
• Adding incentive spirometry to comprehensive physiotherapy does not further improve outcomes beyond multimodal care alone in coronary artery bypass graft (CABG) surgery; routine use after CABG is therefore not recommended. No benefit. 13

Impact on Pulmonary Complications

• In patients undergoing abdominal surgery, inclusion of incentive spirometry in multimodal care reduces postoperative pneumonia risk by ≈55 % (risk ratio 0.44–0.45). Moderate evidence. 14
• The same multimodal approach decreases atelectasis incidence by 41–47 % (risk ratio 0.53–0.59). Moderate evidence. 14
• Pre‑operative inspiratory‑muscle training with incentive‑spirometry devices in cardiac surgery patients lowers overall respiratory complications from 27 % to 10 %; the reduction in pneumonia (7 % vs 3 %) did not reach statistical significance in shorter training protocols. Limited evidence. 14

Effect on Hospital Length of Stay

• Incorporating incentive spirometry into pre‑habilitation and postoperative care shortens hospital stay by 1–3.2 days. Moderate evidence. 14
• The greatest length‑of‑stay benefit is observed when pre‑operative respiratory preparation includes 2–4 weeks of inspiratory‑pressure training. Moderate evidence. 14

Patient Populations at Highest Risk (Strong Evidence)

• Age > 60 years is the strongest patient‑related predictor of postoperative pulmonary complications. 13
• ASA class II or higher, functional dependence, and congestive heart failure markedly increase complication risk. 13
• Serum albumin < 35 g/L is a powerful predictor of adverse postoperative outcomes. 13

High‑Risk Surgical Procedures (Strong Evidence)

• Upper abdominal, thoracic, head‑and‑neck, vascular, and neurosurgical operations are associated with higher rates of pulmonary complications. 13

Essential Multimodal Components (Cannot Be Omitted)

• Deep‑breathing exercises provide equivalent benefit to incentive spirometry alone and are more labor‑efficient. Strong evidence. 13
• Selective nasogastric tube use: routine placement significantly raises pneumonia and atelectasis rates; selective use reduces these complications. Strong evidence. 13

Alternative Strategies When Incentive Spirometry Is Unsuitable

• Nasal continuous positive‑airway pressure (CPAP) is especially beneficial for patients unable to perform incentive spirometry or deep‑breathing exercises effectively. Strong evidence. 13

Pre‑operative Optimization (Moderate Evidence)

• A ≥ 4‑week cardiorespiratory and muscular pre‑habilitation program reduces overall postoperative complications (OR 0.52) and severe pneumonia (OR 0.40). 14
• Inspiratory‑muscle training with adjustable‑pressure valve devices requires a minimum of 5 days of twice‑daily practice, with 2–4 weeks being optimal for maximal benefit. 14