Respiratory Distress Management in CVICU

Initial Assessment and Support

The American Thoracic Society recommends high-flow nasal cannula oxygen as first-line therapy for patients with mild to moderate respiratory distress, as it can generate low levels of PEEP in upper airways, decrease work of breathing, and reduce dead space 1
Non-invasive ventilation with close monitoring is a reasonable initial approach in less severely ill patients, but requires careful patient selection and monitoring as deterioration can occur abruptly, according to the American College of Chest Physicians 2, 3
Helmet NIV should be preferred over face-mask NIV when available, as it is associated with significant reductions in intubation rates and 90-day mortality, as stated by the European Respiratory Society 1
Positioning the patient in an upright sitting position can optimize breathing mechanics and reduce work of breathing, as recommended by the World Federation of Societies of Intensive and Critical Care Medicine 4
Target oxygen saturation of 92-97% or PaO2 70-90 mmHg to maintain adequate oxygenation while avoiding hyperoxia, as suggested by the American College of Cardiology 2

The Society of Critical Care Medicine recommends intubation and mechanical ventilation when non-invasive support fails or in patients with severe respiratory distress 2, 5
Low tidal volume ventilation (4-6 ml/kg ideal body weight) should be used to minimize ventilator-induced lung injury, as recommended by the American Thoracic Society 2, 1
Recruitment maneuvers should be performed before PEEP selection to optimize lung compliance, according to the European Society of Intensive Care Medicine 2
PEEP should be selected based on gas exchange, hemodynamic status, lung recruitability, end-expiratory transpulmonary pressure, and driving pressure, as stated by the American College of Chest Physicians 2, 1

The European Society of Intensive Care Medicine recommends administering opioids as first-line treatment for dyspnea, carefully titrated to effect 6, 4
Benzodiazepines should be added when dyspnea is associated with anxiety or when opioids alone are insufficient, as suggested by the World Federation of Societies of Intensive and Critical Care Medicine 4

The Society of Critical Care Medicine recommends implementing active or passive mobilization and muscle training early to prevent ICU-acquired weakness 7
Positioning, splinting, passive mobilization, and muscle stretching should be used to preserve joint mobility and skeletal muscle length in immobile patients, as recommended by the American College of Sports Medicine 7
Chest physiotherapy should be considered for secretion clearance in appropriate patients, according to the American Association for Respiratory Care 7
Adequate nutrition should be maintained to support respiratory muscle function, as suggested by the American Society for Parenteral and Enteral Nutrition 6

The American College of Chest Physicians recommends considering weaning from mechanical ventilation when PaO2/FiO2 > 200 mmHg and PEEP < 10 cmH2O 2
The use and timing of tracheostomy should be individualized based on expected duration of ventilation and patient factors, as stated by the American Thoracic Society 2
Partial ventilator support should be implemented to promote respiratory muscle activity when gas exchange, respiratory mechanics, and hemodynamic status have improved, according to the European Respiratory Society 2

The American College of Emergency Physicians recommends not delaying intubation in rapidly deteriorating patients despite non-invasive support 1
Excessive sedation that may worsen respiratory function and prolong mechanical ventilation should be avoided, as suggested by the World Federation of Societies of Intensive and Critical Care Medicine 4
The European Society of Intensive Care Medicine recommends not withholding adequate opioid dosing for dyspnea due to concerns about respiratory depression, as the benefits for symptom control often outweigh the risks 8
Disconnections of the ventilator circuit should be avoided to prevent aerosol generation and viral transmission risk in infectious cases, according to the World Health Organization 9

Dyspnea may manifest as subjective shortness of breath or objective signs of increased work of breathing, according to the American Thoracic Society 10
Stridor may indicate upper airway obstruction and increases risk of reintubation, as noted by the American Society of Anesthesiologists 11

Physiotherapy before and after extubation can reduce weaning duration and failure, as recommended by the European Society of Intensive Care Medicine 11

Prophylactic non-invasive ventilation after extubation in high-risk patients, especially those with hypercapnia, can be beneficial, according to the American College of Chest Physicians 11

Involving palliative medicine routinely before implantation of cardiac devices for terminal heart failure is recommended, as suggested by the Society of Critical Care Medicine 12

Allowing pain or distressing symptoms to persist as a way to maintain blood pressure or stimulate respiratory effort should be avoided, as stated by the European Society of Intensive Care Medicine 10