Hyperinflation of lung is generally used for secretion removal and to improve lung compliance
. Chance of lung atelectasis occurrence increases in anaesthetized patient on 100% oxygen ventilation via hyperinflation system hence, oxygenated air or only air is preferred in hyperinflation system.
Its main pathophysiological characteristics are lung volume reduction, decreased lung compliance
, and imbalance of the ventilation/blood flow ratio.
In patients with severe PE, specific complications include a further decrease in dynamic lung compliance
and functional residual capacity, atelectasis, hypoxaemia, tissue trauma and capillary damage, bronchospasm, increased microbial colonisation of the lower airway and cardiovascular instability.
 Breathing improves the efficiency of respiratory muscle and lung compliance
during inspiration by reducing the elastic and viscous resistance of lung.
The HAL features interactive eyes and active facial expressions, dynamic lung compliance
with true ventilator support and real patient monitor support for measurements such as Specific Oxygen, electrocardiograms, live pacing, defibrillators and non-invasive blood pressure (NIBP) tests.
It supports real patient monitors and sensors and features dynamic lung compliance
that responds to real mechanical ventilation.
Dense pulmonary fibrosis critically affects lung compliance
Static Lung Compliance
. After animal sacrifice, the body cavity was opened, an incision was made in the trachea, and a 20-gauge catheter was inserted and secured with a suture.
Acute respiratory distress syndrome (ARDS) is characterised by severe hypoxaemia of acute onset, decreased lung compliance
, reduced lung volumes and radiologically bilateral diffuse infiltrates.
Decreased lung compliance
in obese patients lowered FRC resulting in closure of small airways during ventilation and ventilation perfusion mismatches and hypoxemia.
There are several explanations, most important being changes in lung mechanics with the increase in the overall chest volume and stiffness, lower lung compliance
, all of which make respiratory muscles ineffective, weak and prone to fatigue.
Results: The dynamic lung compliance
decreased significantly at ROSC immediately and 1 h after ROSC compared to baseline (21.86 [+ or -] 2.00 vs.