Naslov
Resorption of gas trapped in body cavities: comparison of alveolar and pleural space with inner ear and paranasal sinuses

Autori
Ivezić, Zdravko ; Kurbel, Sven ; Škrinjarić-Cincar, Sanda ; Radić, Radivoje

Izvornik
Advances in Physiology Education (1043-4046) 30 (2006), 1; 30-2

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pregledni rad, stručni

Ključne riječi
Absorption/physiology Blood Gas Analysis Comparative Study Ear; Inner Paranasal Sinuses Partial Pressure Pleural Cavity

Sažetak
This paper describes our attempt to devise a short text aimed at improving students' understanding of gas resorption in body cavities. Students are expected to understand the mechanisms behind paranasal sinusitis, otitis media, closed pneumothorax, and atelectasis of collapsed lung tissue, all used as examples. On the basis of the interpretation that during pneumothorax resorption, gas diffuses down pressure gradients into the blood, students are encouraged to calculate tables of pressure gradients for the above-mentioned pathological conditions. After answering a few questions, students need to analyze and eventually accept the following conclusion: in cases of air trapping in collapsible body cavities, all gases will be fully reabsorbed without pain. Air trapping in bone cavities leads only to partial reabsorption of gases and results in subatmospheric intracavity pressure. Partial vacuum causes painful mucosal edema and free fluid secretion.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne medicinske znanosti, Kliničke medicinske znanosti

POVEZANOST RADA