Cardiac catheterisation and oxygen saturation levels

Question 1

deoxygenated blood returns to the right side of the heart via the superior vena cava (SVC) and inferior vena cava (IVC). It has an oxygen saturation level of around 70%. The right atrium (RA), right ventricle (RV) and pulmonary artery (PA) normally have oxygen saturation levels of?

Answer 1

around 70%

Question 2

The left atrium (LA), left ventricle (LV) and aorta should all, therefore, have oxygen saturation levels of

Answer 2

98-100%

Question 3

Atrial septal defect (ASD) oxygen sat

Answer 3

85% RA
85% RV
85% PA
100% LA
100% LV
100% AORTA

Question 4

Ventricular septal defect (VSD) ox sat

Answer 4

70% RA
85% RV
85% PA
100% LA
100% LV
100% AORTA

Question 5

Patent ductus arteriosus (PDA)

Answer 5

70% RA
70% RV
85%PA
100%LA
100%LV
100% AORTA

Question 6

VSD with Eisenmenger’s ox sat

Answer 6

70% RA
70% RV
70% PA
100% LA
85% LV
85% AORTA