Axial Spondyloarthritis and Autosomal Dominant Polycystic Kidney Disease in Two Siblings: A Rare Cooccurrence.

Autosomal dominant polycystic kidney disease (ADPKD) is the most frequently occurring hereditary kidney disease, and axial spondyloarthritis (SpA) is one of the most frequently occurring rheumatic diseases. Treatment-related decisions for axial SpA may pose a challenge in case of renal involvement. The authors describe two siblings with cooccurrence of these two diseases. The association of these two diseases is not well known. Practitioners should monitor renal function in SpA patients and take treatment-related decisions regarding renal involvement. Antitumor necrosis factor-alpha (anti-TNF-α) agents may be used in case nonsteroidal anti-inflammatory drugs (NSAIDs) cannot be utilized.

The effect of hypercalcemia on allograft calcification after kidney transplantation.

PURPOSE: Persistent hypercalcemia after kidney transplantation (KTx) may cause nephrocalcinosis and graft dysfunction. The aim of this study was to evaluate patients with hypercalcemia and assess its effect on tubulointerstitial calcification. METHODS: A total of 247 recipients were enrolled. Transient and persistent hypercalcemia was defined as hypercalcemia (corrected serum calcium >10.2 mg/dL) persisting for 6 and 12 months after KTx, respectively. The severity of calcification in the 0-h, 6- and 12-month protocol biopsies of patients with transient (n = 8) and persistent hypercalcemia (n = 20) was compared with a matched control group (n = 28). RESULTS: Twenty-eight patients were hypercalcemic at 6 months posttransplantation. Serum calcium levels were normalized in eight of them at the end of the first year. Dialysis duration was a positive predictor of persistent hypercalcemia. Tubulointerstitial calcification was detected in 70.6 and 90 % of patients with persistent hypercalcemia at 6 and 12 months posttransplantation, respectively. In 20 % of patients with transient hypercalcemia, severity of calcification regressed at 12 months posttransplantation along with normalization of serum calcium levels. Graft functions and histopathological findings (ci, ct, ci + ct, cv, ah, percentage of sclerotic glomeruli) were not different at 6 and 12 months posttransplantation. CONCLUSIONS: Hypercalcemia and persistent hyperparathyroidism are not rare after KTx. Tubulointerstitial calcification is more common and progressive among patients with persistent hypercalcemia. Normalization of calcium levels may contribute to regression of calcification in some patients.

Comparison of Turkish and US haemodialysis patient mortality rates: an observational cohort study.

BACKGROUND: There are significant differences between countries in the mortality rates of haemodialysis (HD) patients. The extent of these differences and possible contributing factors are worthy of investigation. METHODS: As of March 2009, all patients undergoing HD or haemodiafiltration for >3 months (n = 4041) in the Turkish clinics of the NephroCare network were enrolled. Data were prospectively collected for 2 years through the European Clinical Dialysis Database. Mean age ± standard deviation was 58.7 ± 14.7 years, 45.9% were female and 22.9% were diabetic. Comparison with US data was performed by applying an indirect standardization technique, using specific mortality rates for patients on HD by age, gender, race and primary diagnosis as provided by the 2012 US Renal Data System Annual Data Report as reference. RESULTS: The crude mortality rate in Turkey was 95.1 per 1000 patient-years. Compared with the US reference population, the annual mortality rate for Turkey was significantly lower, irrespective of gender, age and diabetes. After adjustments for age, gender and diabetes, the mortality risk in the Turkish cohort was 50% lower than US whites [95% confidence interval (CI) 0.46-0.54, P < 0.001], 44% lower than US African-Americans (95% CI 0.52-0.61, P < 0.001) and 20% lower than Asian-Americans (95% CI 0.74-0.86, P < 0.05). CONCLUSIONS: The annual mortality rate of prevalent HD patients was found to be significantly lower in the studied Turkish cohort compared with that published by the US Renal Data System Annual Data Report. Differences in practice patterns may contribute to the divergence.

Recurrent lupus nephritis after transplantation: Clinicopathological evaluation with protocol biopsies.

AIM: Lupus nephritis (LN) is an important complication of systemic lupus erythematosus (SLE). The aim is to use indication and protocol biopsies to determine clinicopathological findings and outcomes of patients with LN undergoing kidney transplantation (KTx). METHODS: Patients who underwent KTx due to LN were retrospectively analyzed. Recurrent LN (RLN) was diagnosed by transplant kidney biopsy. RESULTS: Among 955 KTx patients, 12 patients with LN as the cause of end-stage renal disease were enrolled. Five patients were male. Mean follow-up time was 63 ± 34 months. At the last follow-up visit, mean levels of serum creatinine and proteinuria were 137.0 ± 69.0 µmol/L and 0.26 ± 0.26 g/day, respectively. Eighteen indication and 22 protocol biopsies were performed; 27 biopsies were additionally evaluated by immunofluorescence. In two recipients, subclinical RLN was confirmed by protocol biopsies. Clinical recurrence occurred in four patients. Among patients with RLN, time from diagnosis of LN to KTx was significantly shorter and use of ATG as induction treatment was significantly lower. Graft loss occurred in two recipients who had clinical RLN. Five-year overall graft survival was 85.7%. CONCLUSION: Kidney transplantation is a reasonable option for patients with ESRD secondary to SLE. However, recurrence of LN is common if protocol biopsies are included in post-transplantation surveillance.

The evidence of occult hypervolemia; improvement of cardiac functions after kidney transplantation.

The term cardiorenal syndrome (CRS) has been used to define interactions between acute or chronic dysfunction of the heart or kidney. When primary chronic kidney disease contribute to cardiac dysfunction, it is classified as type 4 CRS. Cardiac dilatation, valve regurgitations, and left ventricular dysfunction are observed in end-stage renal failure patients with uremic cardiomyopathy. Because of perioperative risks in these patients, they may not be considered a candidate for kidney transplantation. However, uremic cardiomyopathy can be corrected when volume control is achieved by appropriate dose and duration of ultrafiltration. By presenting two cases with occult hypervolemia in uremic cardiomyopathy whose cardiac functions improved early after kidney transplantation, attention is drawn to the importance of kidney transplantation on cardiac function in such patients primarily and the importance of strict volume control on cardiac function in dialysis patients waiting for kidney transplantation.

How quickly can acute symptomatic hyponatremia be corrected?

The systemic absorption of the flush liquid, including sorbitol, glycine or mannitol, can lead to complications, such as hyponatremia, volume overload and pulmonary or cerebral edema. Acute hyponatremia is defined as a reduction in the plasma sodium level in less than 48 h. Acute symptomatic hyponatremia should be corrected aggressively because it may cause irreversible neurological damage and death. Rapid correction of hyponatremia causes severe neurologic deficits, such as central pontine myelinolysis; thus, the optimal therapeutic approach has been debated. This article examined acute symptomatic hyponatremia in a patient undergoing transcervical myomectomy for a submucosal myoma. A thirty-seven-year-old patient was evaluated in obstetrics and gynecology clinic because of altered mental status and agitation. There was no history of chronic illness or drug use. It was discovered that during the operation, 12 L of the flush fluid, which contained 5 % mannitol, had been infused, but only 7 L of the flush fluid had been collected. On physical examination, the patient's general condition was moderate, her cooperation was limited, she was agitated, and her blood pressure was 120/70 mmHg. The sodium level was 99 mEq/L. Furosemid and 3 % NaCl solution were given. Her serum sodium returned to normal by increasing 39 mEq/L within 14 h. Her recovery was uneventful, and she was discharged 24 h after her serum sodium returned to normal. In conclusion, if there is a difference between the infused and collected volumes of the mannitol irrigant, severe hyponatremia may develop due to the flush fluid used during transcervical hysteroscopy and myomectomy. In these patients, acute symptomatic hyponatremia may be corrected as rapidly as the sodium level dropped.