Introduction Oesophageal variceal bleeding (OVB) is a high mortality rate complication in patients with cirrhosis. The aim of this study was to assess the risk factors for in-hospital mortality (IHM) in cirrhotic patients with OVB. Patients and methods The study cohort included 102 patients (average age, 55.4±12.6 years, 71.6% men) consecutively admitted to our hospital with OVB. All the patients underwent upper endoscopy within 12 h and octeotride or terlipressin therapy was started at admission and continued for 5 days. To calculate Model for End-Stage Liver Disease (MELD) and Child–Turcotte–Pugh scores, laboratory test data from blood samples taken within 6 h of admission were used. Results The IHM was 18.6% [19 patients; confidence interval (95% CI): 11.1–26.2%]. In the univariate analysis, transfusion with 2 or more units of packed red blood cells [PRBC; P=0.038; odds ratio (OR)=7.8; 95% CI: 1.2–61.3], platelets of 100/ml or less (P=0.014; OR=3.6; 95% CI: 1.2–10.3), Child–Turcotte–Pugh score of 10 or more (P=0.002; OR=4.0; 95% CI: 1.2–13.2) and MELD of 18 or more (P=0.044; OR=2.8; 95% CI: 1.1–8.1) were associated with IHM. In the multivariate analysis, transfusion with 2 or more units of PRBC (P=0.076; OR=6.7; 95% CI: 0.82–54.8), platelets of 100/ml or less (P=0.031; OR=3.4; 95% CI: 1.1–10.6) and MELD of 18 or more (P=0.048; OR=3.2; 95% CI: 1.02–10.1) remained independently associated with IHM. Applying a receiver operating characteristic analysis, the area under the curve derived from the multivariate analysis model was 0.76 (95% CI: 0.64–0.88) for IHM. Conclusion Cirrhotic patients with OVB and MELD of 18 or more, platelets of 100/ml or less and requiring transfusion of 2 or more units of PRBC were at an increased risk of IHM. Overall, the logistic regression model correctly predicts 82.2% of IHM patients.

The volatile organic compounds benzene, toluene, ethylbenzene, and xylene (BTEX) are emitted into the atmosphere at gas stations (GS) leading to chronic exposure of nearby residents, which raises public health concerns. This study aimes at determining the contribution of GS emissions to BTEX exposure in nearby residents. Three Control and Exposed areas to BTEX emissions from GS were defined in a medium-sized European city (Porto, Portugal). BTEX atmospheric levels were determined in Control and Exposed areas using passive samplers deployed outdoors (n = 48) and indoors (n = 36), and human exposure was estimated for 119 non-smoking residents using the first urine of the day. Results showed that median BTEX outdoor and indoor concentrations were significantly higher for Exposed than Control areas, with exception of ethylbenzene and xylene indoor concentrations, where no marked differences were found. Comparison of urinary concentrations between Exposed and Control residents demonstrated no significant differences for benzene and ethylbenzene, whereas levels of toluene and xylene were significantly higher in Exposed residents. No marked correlation was obtained between atmospheric BTEX concentrations and urinary concentrations. Data indicate the potential impact on air quality of BTEX emissions from GS, which confirms the importance of these findings in urban planning in order to minimize the impact on health and well-being of surrounding populations.

Bonding strategies within different brackets and dental materials are still a challenge concerning adhesion and dental surface damage. This study compared the shear and tensile bond strength of orthodontic ceramic and metallic brackets to enamel, acrylic, and ceramic surfaces after thermal cycling. Dental surfaces were divided into three groups: enamel, ceramic, and acrylic. Each group received stainless-steel and ceramic brackets. After thermal cycling, specimens were randomly divided into two subgroups considering tensile (TBS) or shear bond strength (SBS) test. After the mechanical testing, scanning electron and optical microscopy were performed, and the adhesive remnant index (ARI) was determined. The two-way ANOVA full factorial design was used to compare TBS, SBS, and ARI on the surface and bracket type (α = 0.05). There were significant differences in TBS, SBS, and ARI values per surface (p < 0.001 and p = 0.009) and type of bracket (p = 0.025 and p = 0.001). The highest mean SBS values were recorded for a ceramic bracket bonded to an acrylic surface (8.4 ± 2.3 MPa). For TBS, a ceramic bracket bonded to acrylic showed the worst performance (5.2 ± 1.8 MPa) and the highest values were found on a metallic bracket bonded to enamel. The adhesion of metallic or ceramic brackets is enough for clinical practice although the damage of the enamel surface after debonding is irreversible and harmful for the aesthetic outcome of the teeth.