In medicine, aspiration is the entry of secretions or foreign material into the trachea and lungs. The patient may either inhale the material, or it may be blown into the lungs during positive pressure ventilation or CPR. As the right main bronchus is more vertical and of slightly wider lumen than the left, aspirated material is more likely to end up in this branch or one of its subsequent bifurcations.
Pulmonary aspiration
Aspiration pneumonia
Round pneumonia
Trapped lung
Air embolism
Parapneumonic effusion
Viral pneumonia
Bronchopleural fistula