5 Mechanical Ventilation Free Online FlashCards

What does assist-control (A/C) ventilation deliver?

The ventilator delivers a preset minimum rate, and each patient-triggered breath also receives the set mandatory breath.

How does SIMV coordinate mandatory and spontaneous breaths?

Mandatory breaths are synchronized with the patient’s effort; spontaneous breaths between them may receive pressure support.

How do pressure-support ventilation and CPAP differ?

Pressure-support ventilation requires spontaneous patient effort. CPAP supports spontaneous breathing with continuous baseline pressure.

What does each mode target: volume control and pressure control?

Volume control targets a set tidal volume while airway pressure can vary. Pressure control targets inspiratory pressure, so delivered tidal volume can vary.

What can cause a high-pressure ventilator alarm?

Coughing, biting, secretions, bronchospasm, a kinked circuit, or reduced lung compliance can raise airway pressure.

What is the initial response to a high-pressure alarm?

Assess the patient and airway first, then check for obstruction, a kinked tube or circuit, and secretions. Summon help if the patient is unstable or the problem persists.

What is the priority response to a low-pressure alarm with falling oxygen saturation?

Assess the patient and promptly check for a disconnected or leaking circuit or displaced airway. Summon help and use a manual resuscitation bag if needed and within scope and protocol.

What should sudden hypotension, rising airway pressure, and one-sided diminished breath sounds suggest?

Suspect a serious complication such as tension pneumothorax. Urgently summon the clinical team while supporting oxygenation and ventilation.

What should routine bedside assessment of an invasively ventilated patient include?

Assess respiratory effort, chest movement, breath sounds, oxygenation, synchrony, airway position and securement, secretions, circuit, and relevant trends.

How should endotracheal-tube cuff pressure be checked?

Verify cuff pressure with a manometer according to facility policy.

What does rising PaCO₂ with falling pH suggest?

Rising PaCO₂ with falling pH suggests worsening respiratory acidosis and inadequate alveolar ventilation. Promptly report the trend and review the patient and ventilator plan with the responsible clinician.

Which ventilator settings are key for supporting oxygenation?

FiO₂ and PEEP are key settings adjusted primarily to support oxygenation, according to the prescribed target and clinical plan.