What does OCT use to create images of the inside of coronary arteries with high resolution?

What is an infundibular stenosis?

Pulsus bisferiens can be defined as:

 1.35 Carbonic acid is a weak acid formed when carbon dioxide dissolves in water. What is the pH of the solution? (1)

What is Ebstein’s anomaly?

When should pressure waveforms be recorded?

 1.28 During the electrolysis of concentrated hydrochloric acid, gases are produced at both electrodes. Which statement describes the test result for the gas collected at the negative electrode?   (1)

 1.27 An isotope of chromium has an atomic mass of 52g.mol-1 . Which statement about an atom of this isotope of chromium is correct? (1)

Identify the waveform as depicted in the image below.  

1.38  River water contains soluble impurities, insoluble impurities, and bacteria. River water is made safe to drink by filtration and chlorination. Which statement is correct? (1)