Management of Raised Expiratory Tidal Volume

Immediate Assessment and Action

The American College of Physicians recommends confirming the elevated tidal volume reading is accurate and not due to equipment malfunction or leak, and measuring plateau pressure immediately, as this is the critical safety parameter 1
The European Respiratory Society suggests checking if the patient has COPD, asthma, or other obstructive lung disease, as these conditions predispose to dynamic hyperinflation when tidal volumes are excessive 3, 4

The American Thoracic Society recommends reducing tidal volume to 6 mL/kg predicted body weight immediately, and increasing respiratory rate to maintain minute ventilation, accepting permissive hypercapnia with pH >7.20 rather than risk ventilator-induced lung injury 1
The Society of Critical Care Medicine suggests maintaining plateau pressure ≤30 cmH₂O as an absolute ceiling, and driving pressure (plateau pressure minus PEEP) should ideally remain <15 cmH₂O 1, 2

The American College of Chest Physicians recommends targeting pH >7.20 rather than normal PCO₂ values, and the PCO₂ goal should be ≤10 mmHg above the patient's baseline awake PCO₂, not necessarily normal values 1
The European Society of Intensive Care Medicine suggests attempting to normalize CO₂ with higher tidal volumes causes ventilator-induced lung injury through alveolar overdistension 1

The Global Initiative for Chronic Obstructive Lung Disease recommends reducing minute ventilation and increasing expiratory time to allow more complete lung emptying, and accepting controlled hypercapnia if necessary to limit dynamic hyperinflation 7
The American Thoracic Society suggests considering adding external PEEP (60-85% of measured PEEPi) to reduce inspiratory threshold load 4

The British Thoracic Society recommends targeting SpO₂ 88-92% (not 94-98%) for COPD patients with known or suspected hypercapnic respiratory failure, and using 24% Venturi mask at 2-3 L/min or 28% Venturi mask at 4 L/min initially 8
The European Respiratory Society suggests avoiding excessive oxygen (PaO₂ >10.0 kPa) as this increases risk of respiratory acidosis 8

The Society of Critical Care Medicine recommends monitoring plateau pressure every 4 hours (or with any clinical change), and arterial blood gases 30-60 minutes after ventilator adjustments 1, 2, 8
The American College of Physicians suggests monitoring respiratory rate, minute ventilation, and patient-ventilator synchrony, and watching for signs requiring further intervention such as plateau pressure rising toward or exceeding 30 cmH₂O despite tidal volume reduction 1