The Prevalence of Metabolic Acidosis in Patients with Different Stages of Chronic Kidney Disease: Single-Centre Study.

BACKGROUND: Metabolic acidosis (MA) is one of the most common consequences of CKD. MA is also a risk factor of CKD progression and increased mortality in these patients. AIM: The aim of this retrospective, cross-sectional study was to assess the prevalence of MA in different stages of CKD and renal replacement therapy (RRT) modalities - haemodialysis (HD) and peritoneal dialysis (PD). Additionally, the relationship between the prevalence of MA and aetiology of kidney disease was analysed. METHODS: One thousand five patients in different stages of CKD, or modalities of RRT were enrolled into this single-centre cross-sectional study. Forty-one patients were ruled out because of oral bicarbonate supplementation. In the remaining 964 patients (698 CKD stages 1-5, 226 HD, 40 PD), venous blood HCO3- concentration, as well as serum Cr and urea concentrations were assessed. MA was diagnosed when blood HCO3- concentration was below 22 mmol/L. RESULTS: The prevalence of MA increased among all stages of CKD. Patients on HD had lower prevalence of MA in comparison with CKD 5 patients with no RRT (38.5 vs. 56.0%; p = 0.02) In PD patients, the prevalence of MA was significantly lower than in HD patients (2.5 vs. 38.5%; p < 0.001). In the whole study group, there were no significant differences in the prevalence of MA between different aetiologies of CKD (glomerulonephritis 24%, hypertension 23%, diabetes 25%, and tubule-interstitial diseases 24%). Also, when only patients in stages CKD 3-5 were compared, no significant differences in the prevalence of acidosis were found (glomerulonephritis 28%, hypertension 22%, diabetes 24%, and tubule-interstitial 21%). CONCLUSIONS: (1) MA is more frequent in patients with more advanced stages of CKD. (2) RRT reduces the prevalence of MA. (3) In PD patients, MA is rare. (4) Aetiology of CKD seems not to have a significant impact on MA prevalence.

Quality of life in survivors of childhood brain tumour and the association of children's diseases on quality of their parents life.

OBJECTIVE: Evaluation of children's quality of life (QoL) after finished brain tumour treatment and the association of children's diseases on quality of their parents' life. METHODS: The study group was consisted of 46 children after brain tumour treatment (aged 4, 5, to 29 years old). The control group was composed of 104 students of primary, secondary, and high schools. One hundred fifty (104 + 46) parents were included in the study. Standardised QoL questionnaires (PEDsQL-4.0, WHOQOL-BREF) were used. Survivors' QoL was assessed from patients' and their parents' point of view, also the association of children's diseases on quality of their parents' life was estimated. RESULTS: QoL of children after brain tumour treatment was lower than in the control group according to the children (P < 0.001) and their parents (P < 0.001). The survivors worst rated their ability to social functioning (P < 0.0010) and physical functioning (P < 0.001) in comparison with self-assessment of healthy children. According to their parents, the functioning of children in all zones was worse than in the control group, mostly in social (P < 0.001) and physical sphere (P < 0.001), too. QoL of children with low-grade tumour was comparable with QoL of children with high-grade tumour). QoL of survivors' caregivers in study was higher than QoL of parents of control groups (P = 0.023). CONCLUSIONS: The quality of patients' life after brain tumour treatment is lower in comparison with healthy children. QoL of the parents of survivor is higher than the QoL of healthy children parents. The assessment of QoL of children after brain tumour treatment should be an inherent element of health monitoring.

Sleep disturbances in women with polycystic ovary syndrome.

Sleep disturbances in women with Polycystic Ovary Syndrome (PCOS) have been reported in recent years. The majority of published studies are related to Obstructive Sleep Apnea (OSA) while not many researches have analyzed any other causes of sleep disturbances. A group of ninety five women with Polycystic Ovary Syndrome were enrolled into the study. Sleep disturbances were assessed using validated questionnaires. On the grounds of Athens Insomnia Scale (AIS) evaluation a clinically significant insomnia was ascertained in 12.6% of women with PCOS, while according to Insomnia Severity Index (ISI) in 10.5%. Clinically significant insomnia according to both AIS and ISI, occurred significantly more often in women with PCOS than in women without PCOS based on the chi-square test. The Mann-Whitney U test revealed statistically significant difference between women with and without PCOS based on total values of ISI. An excessive daytime sleepiness occurred at 7.4% of women with PCOS. Statistically significant dependance between: clinically significant insomnia in both AIS and ISI and excessive daytime sleepiness indicated by Epworth Sleepiness Scale (ESS) was observed. Sleep disorders are common in women with PCOS. Screening assessment of sleep disturbances should be a part of medical diagnostics in women with PCOS.