We believe that this study is representative of the United States' renal transplant population, and highlights the need for reduced immunosuppression in the long-term and increased vigilance for cancers in younger patients receiving renal transplantation.

Background/Aims: Angiotensin-converting enzyme inhibitors (ACEI) are the antihypertensives of choice in patients with chronic renal failure (CRF). ACEI by decreasing the synthesis of aldosterone, the main regulator of serum potassium, predispose to the development of hyperkalemia. Although hyperkalemia with administration of ACEI is uncommon in patients with a normal renal function, a preexisting abnormality in potassium hemostasis, as seen in patients with chronic renal failure, may increase the risk of hyperkalemia. Method: To determine the predictors of development of hyperkalemia (K >5.1 mEq/l) in patients on ACEI, we retrospectively reviewed medical records of 119 patients followed in our renal clinic. Results: The mean age of the patients was 56 ± (SD) 13 (range 20–84) years. Sixty-three percent were males, and 37% were females. Sixty-seven percent had a history of diabetes. Eighty five percent of the patients had CRF [creatinine clearance (CrCl) <80 ml/min]. The baseline serum Cr was 2.3 ± 1.2 (range 0.6–6.9) mg/dl, and the CrCl was 50 ± 27.5 ml/min. Of the 119 patients 46 (38.6%) developed hyperkalemia (mean K 5.68 ± 0.3, range 5.2–6.7 mEq/l). Ninety-six percent of the patients who developed hyperkalemia had CRF, and 84% were diabetics. Pearson product-moment correlation revealed a significant positive correlation of hyperkalemia with Cr and a negative correlation of hyperkalemia with CrCl and HCO₃ (Cr: r = 0.42, p < 0.0001; CrCl: r = –0.34, p < 0.0001; HCO₃: r = –0.41, p < 0.0001). Multivariate logistic regression analysis revealed diabetes and serum creatinine to be the main predictors of hyperkalemia. In 31 patients hyperkalemia resolved either with a low-potassium (2 g/day) diet or with diet and a decrease in the dose of ACEI. In 15 patients ACEI had to be discontinued due to persistent hyperkalemia. Conclusions: We conclude that hyperkalemia is common in patients with CRF on ACEI. The majority of the patients who develop hyperkalemia on ACEI have CRF and diabetes. A large number of patients with CRF require discontinuation of ACEI due to hyperkalemia and are deprived of their renoprotective effects.

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Flood syndrome is caused by spontaneous rupture of an umbilical hernia in a patient with tense, long-standing ascites. It is a rare complication of hepatic cirrhosis and has a high mortality rate. Flood syndrome is so named because a rush of ascitic fluid often follows the spontaneous umbilical hernia rupture. We present a case of a 39-yearold male patient with a history of alcoholic liver cirrhosis and recurrent ascites who underwent multiple abdominal paracentesis prior to developing an umbilical hernia that eventually ruptured, causing flood syndrome. The authors would like to discuss flood syndrome with a focus on management options.