MRCP2-0115

MRCP2-0115

A 67-year-old woman was admitted to the hospital after collapsing while shopping. During her inpatient investigations, she underwent cardiac catheterisation. The results of the procedure are listed below, including oxygen saturation levels, pressure measurements, and end systolic/end diastolic readings at various anatomical sites.

– Superior vena cava: 75% oxygen saturation, no pressure measurement available
– Right atrium: 73% oxygen saturation, 6 mmHg pressure
– Right ventricle: 74% oxygen saturation, 30/8 mmHg pressure (end systolic/end diastolic)
– Pulmonary artery: 74% oxygen saturation, 30/12 mmHg pressure (end systolic/end diastolic)
– Pulmonary capillary wedge pressure: 18 mmHg
– Left ventricle: 98% oxygen saturation, 219/18 mmHg pressure (end systolic/end diastolic)
– Aorta: 99% oxygen saturation, 138/80 mmHg pressure

Based on these results, what is the most likely diagnosis?