Anaes SAQs · Applied cardiovascular & respiratory physiology
Respiratory mechanics — compliance, resistance, work of breathing
Primary — compliance (lung/chest wall/total, elastance inverse); PV curve and hysteresis; surfactant and Laplace law (2T/r); airway resistance Poiseuille (1/r^4) and laminar vs turbulent (Reynolds); dynamic vs static compliance and time constants; elastic and resistive work of breathing.
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ANZCAFRCAABAEDAIC
Prompt
Define compliance and airway resistance. Explain the role of surfactant and Laplace's law in lung stability, and the components of the work of breathing.
Question
Define compliance and airway resistance. Explain the role of surfactant and Laplace's law in lung stability, and the components of the work of breathing.
References4ShowHide
- [1]Novaes-Silva MC, et al. How sighing regulates pulmonary surfactant structure and its role in breathing mechanics. Sci Adv, 2025.PMID 40991706
- [3]Hamasaka S, et al. Impact of Expiratory Port Structural Characteristics on Expiratory Pressure-Volume Area in Noninvasive Ventilation. Respir Care, 2026.PMID 42319047
- [4]Phillips TC, et al. Higher Respiratory Muscle Oxygen Cost of Breathing During Exercise in Heart Failure With Preserved Ejection Fraction. Chest, 2026.PMID 42140484
- [6]Weilbacher F, et al. Ventilation with supraglottic airway devices. Sci Rep, 2026.PMID 42168301