End-Stage Renal Failure with Pulmonary Hypertension

A 55-year-old male has been added to your general surgical list for the laparoscopic insertion of a peritoneal dialysis catheter. Their past medical history is of end stage renal failure, chronic obstructive pulmonary disease and hypertension. His medications include: - amlodipine 10 mg po daily - frusemide 120 mg po mane - fluticasone/salmeterol inhaler two doses bd He has had worsening shortness of breath on exertion over the past month. He tells you that at his last consultation with his respiratory physician he was told that he has "high blood pressure in his lungs".