Charge maintained by chloride entering RBC (chloride shift) Hydrogen ions combine with haemoglobin to form haemoglobonic acid. Hydrogencarbonate ions Releasing oxygen The partial pressure of oxygen (also called oxygen tension) of respiring tissues is lower than the lungs.
Screening is a process for evaluating the possible presence of a particular problem. The outcome is normally a simple yes or no. Assessment is a process for defining the nature of that problem, determining a diagnosis, and developing specific treatment recommendations for addressing the problem or diagnosis.
VISION SCREENING AND ASSESSMENT 1 Evaluation to determine the existence of a visual impairment is a most important and difficult task for professionals. Vision screening is effective with the population of children who have a minor vision problem, who are verbal and responsive, and who know their letters or symbols.