Anaesthetic management of a patient with severe pulmonary arterial hypertension for renal transplantation.

We describe a patient with severe pulmonary arterial hypertension scheduled to undergo live-related renal transplantation. We emphasise on meticulous anaesthetic management and early renal transplantation to prevent the progression of disease which would become refractory to treatment, leading to right ventricular failure. Regional (continuous epidural) anaesthesia has been used as technique of choice, where the selective advantages of this technique have been put to good use.

Dapsone-induced methemoglobinemia: "Saturation gap"-The key to diagnosis.

Two cases of Acquired Methemoglobinemia are presented. The significance of a high index of suspicion for diagnosisis emphasized, especially in the presence of a "saturation gap". The various causes of acquired methemoglobinemia are enumerated and the management reviewed.