Critical Care
Respiratory Failure
Acute respiratory failure requires parallel stabilization and etiologic diagnosis. Distinguish hypoxemic from hypercapnic physiology, identify airway or ventilatory-support failure early, select oxygen, high-flow, noninvasive, or invasive support by mechanism and trajectory, and reassess continuously for treatment failure.
First minutes
Recognize failure and stabilize before completing the diagnosis
Airway, oxygenation, ventilation, and circulation are assessed and treated in parallel.
Acute respiratory failure is clinically important gas-exchange dysfunction from inadequate oxygenation, carbon dioxide elimination, or both. Practical thresholds include PaO2 below 60 mmHg or SaO2 below 88% for hypoxemic failure, and PaCO2 at least 45 mmHg with pH below 7.35 for acute hypercapnic failure.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure Absolute blood-gas thresholds require interpretation against baseline, inspired oxygen concentration, altitude, chronic compensation, work of breathing, mental status, and hemodynamics.BMJ+2BMJAcute respiratory failure - Symptoms, diagnosis and treatment | BMJ Best PracticeScienceDirectAcute Respiratory Failure - an overviewPubMedDiagnosis and Management of Acute Respiratory Failure
Immediately identify a threatened airway, inability to protect the airway or clear secretions, respiratory arrest or exhaustion, refractory hypoxemia, deteriorating consciousness, or shock. Clear upper-airway obstruction and provide supplemental oxygen and ventilatory support while diagnostic testing proceeds.BMJ+1BMJAcute respiratory failure - Symptoms, diagnosis and treatment | BMJ Best PracticePubMedDiagnosis and Management of Acute Respiratory Failure Mechanical ventilation is indicated for refractory hypoxemia, ventilatory failure, shock with metabolic acidosis, or airway compromise from altered mental status or obstruction.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
Obtain continuous SpO2, respiratory rate, mental-status assessment, blood pressure, cardiac monitoring, and serial reassessment of work of breathing.BMJ+1BMJAcute respiratory failure - Symptoms, diagnosis and treatment | BMJ Best PracticePubMedDiagnosis and Management of Acute Respiratory Failure
Obtain an ABG when defining oxygenation, PaCO2, pH, or acid-base compensation will change support or disposition. Peripheral venous pH may be informative, but venous PO2 and PCO2 have clinically important variation from arterial values, particularly in acute hypoxemic failure.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
Use capnography as an adjunct for real-time ventilation monitoring and endotracheal tube confirmation; do not assume end-tidal CO2 accurately estimates PaCO2 when V/Q mismatch or low cardiac output is present.BMJ+1BMJAcute respiratory failure - Symptoms, diagnosis and treatment | BMJ Best PracticePubMedDiagnosis and Management of Acute Respiratory Failure
| Pattern | Key findings | Priority implication |
|---|---|---|
| Hypoxemic failure | PaO2 <60 mmHg or SaO2 <88%.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | Determine whether hypoxemia reflects V/Q mismatch, shunt, diffusion limitation, hypoventilation, low inspired oxygen, or impaired oxygen delivery.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
| Acute hypercapnic failure | PaCO2 ≥45 mmHg with pH <7.35.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | Identify reduced drive, pump failure, obstructive disease, increased dead space, or excess CO2 production; provide ventilatory assistance rather than oxygen alone.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
| Acute-on-chronic hypercapnia | Elevated PaCO2 with increased bicarbonate plus acute acidemia or clinical deterioration.ScienceDirect+1ScienceDirectAcute Respiratory Failure - an overviewPubMedDiagnosis and Management of Acute Respiratory Failure | Compare with baseline; treat the precipitant and avoid assuming compensated chronic values are benign during acute decline.ScienceDirect+1ScienceDirectAcute Respiratory Failure - an overviewPubMedDiagnosis and Management of Acute Respiratory Failure |
| Mixed failure | Hypoxemia plus hypercapnia.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | Address both oxygenation and alveolar ventilation; select support according to airway protection, work of breathing, and anticipated trajectory.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
Diagnosis
Use gas exchange and imaging to narrow the mechanism
Mechanism directs both the differential diagnosis and the likely response to oxygen or positive pressure.
For hypoxemia, calculate the alveolar-arterial oxygen gradient from an ABG when mechanism is uncertain. A widened gradient supports V/Q mismatch, shunt, or diffusion limitation; a normal gradient in a hypercapnic patient favors alveolar hypoventilation or low inspired oxygen tension.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure V/Q mismatch usually improves with supplemental oxygen, whereas substantial shunt responds incompletely because perfused blood bypasses ventilated alveoli.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
Obtain portable chest radiography early to identify pneumothorax, focal or diffuse alveolar filling, pleural disease, and interstitial processes. Use CT selectively when radiography is nondiagnostic or when pulmonary embolism, occult infection, interstitial/inflammatory disease, or other cross-sectional pathology is suspected.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure Bedside ultrasound may be added to the standard pathway when acute dyspnea remains diagnostically uncertain.PubMedPubMedGuideline-based management of acute respiratory failure and ...
For hypercapnia, distinguish reduced drive ('won't breathe') from ventilatory pump or airway limitation ('can't breathe') and excess dead space or CO2 production ('can't breathe enough'). Medication exposure, stroke, sleep-disordered breathing, obesity hypoventilation, hypothyroidism, neuromuscular disease, chest-wall disease, severe obstructive disease, and shock can each be causal or contributory.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
Review medication and substance exposure promptly for opioids, benzodiazepines, barbiturates, alcohol, and other respiratory depressants; administer appropriate reversal when indicated.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
In suspected neuromuscular or chest-wall failure, assess vital capacity, inspiratory muscle performance when feasible, secretion clearance, bulbar function, and aspiration risk. Hypercapnia may precede profound hypoxemia.Wolters Kluwer+1Wolters KluwerNEUROMUSCULAR RESPIRATORY FAILUREPubMedGuidelines - Noninvasive Positive Pressure Ventilation in the Home - NCBI Bookshelf
Interpret SpO2 cautiously in patients with darker skin pigmentation; occult hypoxemia despite SpO2 92% to 96% occurred more often in Black than White patients in a multicenter study, supporting ABG confirmation when clinical findings and oximetry diverge.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
| Mechanism | Bedside or test clue | Expected response to oxygen |
|---|---|---|
| V/Q mismatch | Widened A-a gradient; common with airway, parenchymal, or pulmonary vascular disease.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | Usually improves with supplemental oxygen.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
| Shunt | Widened A-a gradient plus limited oxygen response; consider alveolar filling, collapse, or intracardiac/intrapulmonary shunt.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | May remain severe despite high FiO2.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
| Alveolar hypoventilation | Hypercapnia with normal A-a gradient when no concomitant gas-exchange lesion exists.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | Oxygen improves hypoxemia but not hypercapnia.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
| Diffusion limitation | Widened A-a gradient; may occur with interstitial disease or pulmonary vascular disease.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure | Usually improves with supplemental oxygen.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure |
Respiratory support
Match oxygen and noninvasive support to physiology and risk of failure
Support is a monitored therapeutic trial, not a substitute for reassessment or airway control.
Provide supplemental oxygen for hypoxemic respiratory failure while treating the cause. Across critically ill populations, an SpO2 range of approximately 90% to 98% appears safe, although oxygen targets remain uncertain and should avoid both severe hypoxemia and unnecessary hyperoxemia.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure For patients with COPD or other risk of hypercapnic deterioration, target SpO2 88% to 92%.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
Use conventional nasal cannula or facemask for modest requirements and low work of breathing. When oxygen need exceeds the effective delivery capacity of conventional devices or work of breathing is increased, HFNC can deliver heated, humidified oxygen at flows up to 60 L/min with more reliable FiO2, low-level positive pressure, and upper-airway dead-space washout.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
NIV requires spontaneous breathing, airway protection, cooperation sufficient to remove the mask if vomiting occurs, and ability to manage secretions. Avoid NIV in cardiac or respiratory arrest, inability to protect the airway or clear secretions, facial trauma or surgery, and recent esophageal anastomosis.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
Acute COPD exacerbation with respiratory acidosis: bilevel NIV is first-line when no contraindication exists and reduces intubation and mortality.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
Acute cardiogenic pulmonary edema: CPAP or bilevel NIV improves respiratory distress and reduces intubation; evidence supports reduced mortality in meta-analysis.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
De novo acute hypoxemic respiratory failure: HFNC is generally favored over face-mask NIV. If NIV is attempted, monitor closely because delayed intubation after NIV failure may worsen outcomes.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
Reassess response using mental status, respiratory rate and effort, hemodynamics, SpO2/SaO2, and serial ABG pH and PaCO2. In acute hypercapnic COPD exacerbation, benefit from NIV should generally be evident within 1 to 4 hours.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
When to abandon noninvasive support
Proceed to endotracheal intubation when noninvasive support fails to correct clinically significant hypoxemia or acidemia, PaCO2 and pH worsen, work of breathing remains unsustainable, airway protection is lost, or circulatory failure develops.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure No universal time limit safely applies to HFNC in all hypoxemic syndromes; use trajectory-based reassessment rather than a fixed-duration trial.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
Do not delay intubation for a patient with worsening encephalopathy, inability to clear secretions, escalating vasopressor requirement, refractory hypoxemia, or progressive fatigue.BMJ+2BMJAcute respiratory failure - Symptoms, diagnosis and treatment | BMJ Best PracticePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
Escalation
Intubate deliberately and ventilate to minimize additional lung injury
Prepare for peri-intubation hypoxemia and hemodynamic collapse in patients with limited cardiopulmonary reserve.
Preoxygenate hypoxemic patients for at least 3 minutes with HFNC or NIV when feasible. Hypoxemia during rapid-sequence induction increases risk for arrhythmia, hemodynamic instability, and cardiac arrest; bag-mask ventilation during the apneic period reduces hypoxemia without increasing aspiration in a randomized trial.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure Use vasopressors for hemodynamic instability during intubation and reserve fluid administration for suspected hypovolemia; a routine 500-mL crystalloid bolus did not reduce cardiovascular collapse.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
For invasive ventilation, select a mode and settings that deliver sufficient alveolar ventilation while limiting pressure- and volume-related injury. In ARDS, low tidal volume ventilation using 4 to 8 mL/kg predicted body weight is recommended; a 6 mL/kg predicted body weight target is the standard starting point in most protocols.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation Monitor plateau pressure and driving pressure, especially when compliance is poor.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
For obstructive disease, actively assess for dynamic hyperinflation and auto-PEEP. Failure of expiratory flow to return to baseline before the next breath suggests incomplete exhalation; reduce respiratory rate or increase inspiratory flow to lengthen expiratory time. Severe auto-PEEP can impair venous return and cause hypotension.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
A reasonable initial PEEP for many ventilated patients is 5 cm H2O; higher PEEP may be necessary in ARDS but must be balanced against overdistension and hemodynamic compromise.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
Use the lowest FiO2 that maintains acceptable oxygenation; for most critically ill patients, SpO2 90% to 96% is reasonable, with 88% to 92% for patients at risk for hypercapnia.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
Protocolized daily spontaneous breathing trials identify readiness for liberation. Pairing spontaneous breathing trials with daily sedation interruption reduces mechanical ventilation duration and improves long-term mortality.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
| Finding | Likely interpretation | Action |
|---|---|---|
| High peak pressure with relatively normal plateau pressure | Increased airway resistance from circuit obstruction, endotracheal tube obstruction, mucus, bronchospasm, asthma, or COPD.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation | Check circuit and tube patency; treat obstruction or bronchospasm; assess for auto-PEEP.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation |
| High plateau pressure | Reduced lung, pleural-space, or chest-wall compliance; consider ARDS, edema, pneumonia, atelectasis, pneumothorax, effusion, obesity, or abdominal distension.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation | Assess cause, minimize injurious tidal volume and pressures, and evaluate PEEP response and hemodynamics.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation |
| Expiratory flow persists at next inspiration | Dynamic air trapping/auto-PEEP.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation | Lengthen expiration by lowering respiratory rate or increasing inspiratory flow; urgently decompress the circuit transiently if severe auto-PEEP causes shock.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation |
| Worsening acidosis on low-tidal-volume ventilation | Insufficient minute ventilation or severe dead space; permissive hypercapnia may be necessary.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation | Increase respiratory rate as tolerated; avoid auto-PEEP; ARDS protocols permit incremental tidal-volume increase if pH remains below 7.15 despite rate adjustment.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation |
ARDS
Identify ARDS early and use evidence-based escalation
ARDS is a phenotype of acute hypoxemic respiratory failure requiring a distinct lung-protective strategy.
ARDS requires acute onset within 1 week, bilateral opacities not fully explained by effusions, collapse, or nodules, respiratory failure not fully explained by heart failure or fluid overload, and PaO2/FiO2 of 300 or less with PEEP or CPAP at least 5 cm H2O.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation Severity is mild at PaO2/FiO2 201 to 300, moderate at 101 to 200, and severe at 100 or less.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
For moderate-to-severe ARDS, prone positioning for prolonged daily sessions is associated with improved mortality and is recommended by major guideline syntheses; evidence summaries describe use for more than 12 hours daily.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedGuideline-based management of acute respiratory failure and ... Higher PEEP may be considered in moderate-to-severe ARDS, but must be individualized to oxygenation, compliance, plateau pressure, hemodynamics, and evidence of overdistension.PubMed+2PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedGuideline-based management of acute respiratory failure and ...
Avoid routine high-frequency oscillatory ventilation in moderate-to-severe ARDS.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedGuideline-based management of acute respiratory failure and ... Routine recruitment maneuvers are also not supported consistently across guideline syntheses, reflecting uncertain benefit and potential harm.PubMedPubMedGuideline-based management of acute respiratory failure and ... After initial resuscitation, conservative fluid management in ARDS or sepsis improves oxygenation and ventilator-free days, although not mortality.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedGuideline-based management of acute respiratory failure and ...
Use low tidal volume ventilation, monitor plateau and driving pressures, and assess daily whether prone positioning and PEEP strategy remain indicated.PubMed+2PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedGuideline-based management of acute respiratory failure and ...
Consider VV-ECMO referral for severe refractory ARDS after optimized conventional management, including prone positioning when not contraindicated. ELSO criteria cited in guideline synthesis include PaO2/FiO2 below 80 mmHg or severe hypercapnic acidosis despite optimized ventilation.PubMedPubMedGuideline-based management of acute respiratory failure and ...
Screen for treatable ARDS mimics or concomitant diagnoses, including hydrostatic pulmonary edema, diffuse alveolar hemorrhage, acute eosinophilic pneumonia, infection, acute interstitial disease, drug-induced injury, and malignancy when the course is atypical.PubMedPubMedGuideline-based management of acute respiratory failure and ...
Reassessment
Monitor response, complications, and readiness to liberate
Support should be de-escalated as soon as the underlying process and respiratory mechanics permit.
Reassess oxygenation and ventilation after every meaningful change in oxygen delivery, NIV settings, ventilator settings, fluid strategy, bronchodilator treatment, or clinical status. For hypercapnic failure, serial pH and PaCO2 plus work of breathing are more actionable than pulse oximetry alone.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure For ventilated patients, monitor airway pressures, waveforms, delivered tidal volume, respiratory rate, synchrony, gas exchange, sedation exposure, and hemodynamics.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
Daily liberation assessment should establish improving underlying disease, adequate gas exchange, hemodynamic stability, capacity to initiate inspiration, manageable secretions, cough strength, and airway protection. Daily spontaneous breathing trials are central; initial 30-minute trials with low pressure support had higher successful extubation rates than 2-hour T-piece trials in a randomized study.PubMedPubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
For patients at high risk for extubation failure, preventive NIV immediately after extubation can reduce reintubation; HFNC is another supported postextubation strategy.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation Use a cuff-leak test in patients at high risk for postextubation stridor; if the patient otherwise meets extubation criteria but fails the test, systemic corticosteroid given at least 4 hours before extubation is recommended in guideline synthesis.PubMedPubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress Syndrome
Pair spontaneous awakening and breathing trials when clinically appropriate.PubMed+1PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive Ventilation
Use targeted light sedation where feasible, assess delirium, and pursue early mobility protocols in stable patients; these measures are associated with fewer ventilator days or improved outcomes in evidence syntheses.PubMedPubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress Syndrome
In progressive neuromuscular disease, discharge planning should include airway-clearance support, home ventilation assessment, and shared discussion of noninvasive versus invasive long-term support before crisis presentation when possible.PubMedPubMedGuidelines - Noninvasive Positive Pressure Ventilation in the Home - NCBI Bookshelf
Common questions
What is the most useful initial distinction in adult respiratory failure?
Differentiate oxygenation failure from ventilatory failure using SpO2, ABG PaO2, PaCO2, pH, and clinical work of breathing. Then identify whether hypoxemia is due to V/Q mismatch, shunt, diffusion limitation, hypoventilation, low inspired oxygen, or impaired oxygen delivery.PubMedPubMedDiagnosis and Management of Acute Respiratory Failure
When should HFNC be preferred over NIV?
For de novo acute hypoxemic respiratory failure, HFNC is generally preferred over face-mask NIV because evidence and ACP guidance favor HFNC. NIV remains preferred for acute hypercapnic COPD exacerbation and acute cardiogenic pulmonary edema when no contraindication exists.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
When should NIV be considered a failure?
Escalate to intubation for worsening mental status, inability to protect the airway or clear secretions, persistent or worsening acidemia or hypercapnia, inadequate oxygenation, unsustainable work of breathing, or hemodynamic instability despite optimized NIV.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
What ventilator strategy is required in ARDS?
Use low tidal volume ventilation based on predicted body weight, monitor plateau and driving pressures, consider higher PEEP in moderate-to-severe disease, and use prolonged prone positioning when appropriate. Routine high-frequency oscillatory ventilation should be avoided.PubMed+2PubMedEvidence-Based Practices for Acute Respiratory Failure and Acute Respiratory Distress SyndromePubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedGuideline-based management of acute respiratory failure and ...
How should oxygen targets differ in COPD with hypercapnia risk?
Target SpO2 88% to 92% in COPD or other patients at risk for hypercapnic deterioration, while treating hypoventilation with ventilatory support rather than escalating oxygen alone.PubMed+1PubMedManagement of Respiratory Failure: Ventilator Management 101 and Noninvasive VentilationPubMedDiagnosis and Management of Acute Respiratory Failure
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