F12.iii · Respiratory Measurement

This VIVA will examine oxygen measurement and sodium channel physiology. In what ways can oxygen tension or concentration be measured?

This viva will explore your knowledge of measurement. By what methods can the concentration of oxygen in inspired gas be measured? (Image removed from report.)

This viva will explore your knowledge of the following areas: Arterial blood gases and oxygen measurement. What is the difference between hypoxia and hypoxaemia?

This viva discussed humidity, oxygen measurement and concepts around partial pressure.

This Viva tested knowledge on oxygen. It explored an understanding of the physiological effects of oxygen, measurement of oxygen and principles around humidity.

This Viva will explore knowledge of the measurement and interpretation of Blood Gases and respiratory pharmacology. Subsequent discussion involved understanding differences between hypoxia and hypoxaemia, the Clark electrode, physiological mechanisms of hypoxaemia, asthma and bronchodilators

This station will explore your knowledge of the physiology associated with the interpretation of Blood Gases and oxygen analysis. How would you interpret this Arterial Oxygen Tension? PaO2 = 24.6 mmHg (3.2 kPa) This viva tested the candidates’ knowledge of hypoxaemia, associated respiratory physiology and oxygen measurement. Specifically measurement of oxygen tension, the alveolar gas equation and physiological responses to hypoxia. Measurement of oxygen tension, in particular the principles behind the Clark electrode, was well done. The area candidates struggled the most was explaining and integrating arterial blood gases and the physiological principles surrounding them.

This viva will test your knowledge of hypoxemia, oxygen therapy and pulse oximetry The following is a blood gas of a young person who has taken a sedative drug overdose. pH 7.2 PO2 40 mmHg PCO2 80 mmHg HCO3- 28 mmols/L Describe this blood gas Apart from being asked to describe the blood gas, candidates were also asked about the Henderson-Hasselbach equation, causes of hypoxaemia, pulmonary shunt, response to supplemental oxygen and pulse oximetry.

This viva will test your knowledge of Red Blood Cells and the Clark electrode. Outline the main functions of the red blood cell.