I first met Nils in 1964 at the founding of the EDTA (sic) in Amsterdam. I was 29, he was 60. Later I worked with him, now retired from clinical work, on committees over the next couple of decades. During this time he assumed Presidency of both the EDTA and the ISN; he was one of the major founders of Nephrology, as well as a pioneer of and major contributor to electrolyte balance, haemodialysis, ultrafiltration and related techniques. He had introduced renal biopsy in 1944, but remained silent on this subject until after Claus Brun published his work 8 years later. Nils studied arteriovenous shunts for repeated dialysis during the 1940s, but was blocked by the red rubber and glass tubing – all that was then available. I was immediately impressed by the quiet modesty of this most original man; but despite this he achieved international fame in Europe, although was never well known in the United States. His Festschrift in 1985 in Nephron amply demonstrated his status. His “rival”Pim Kolff (1911-2009) was in contrast slightly younger, outlived Nils by 20 years, and was a fine communicator and great extrovert. Nils was a physiologist and pharmacologist until 36 years old, only then becoming a clinician. Strangely Nils had performed the first haemodialysis at my alma mater, Guy’s Hospital London, in 1948 on a visit, 15 years before we established a renal unit there. Characteristically, he never told me about this event, and I only discovered the story after his death.
Keywords: Nils Alwall, History of haemodialysis, history of nephrology