Heart rate (HR) measurement is essential for children with abnormal heart beats. The purpose of this study was to determine whether HR measurement by smartphone applications (apps) could be a feasible alternative to an electrocardiography (ECG) monitor. A total of 40 children, median age of 4.3 years, were studied. Using four free smartphone apps, pulse rates were measured at the finger (or toe) and earlobe, and compared with baseline HRs measured by ECG monitors. Significant correlations between measured pulse rates and baseline HRs were found. Both correlation and accuracy rate were higher in the earlobe group than the finger/toe group. When HR was <120 beats per min (bpm), the accuracy rates were not different between the two different measuring sites for each app (median of 65 vs 76%). The accuracy rates in the finger/toe group were significantly lower than those in the earlobe group for all apps when HR was ≥ 120 bpm (27 vs 65%). There were differences among apps in their abilities to measure pulse rates. Taking children's pulse rate from the earlobe would be more accurate, especially for tachycardia. However, we do not recommend that smartphone apps should not be used for routine medical use or used as the sole form of HR measurement because the results of their accuracy are not good enough.

The dislodgment rate of port-a-cath catheters in children in our series was 4.1%. Most (83%) catheters were broken at the site of anastomosis to the port. All dislodged catheters could be successfully retrieved by transcatheter retrieval using a gooseneck snare.

SUMMARY: Helicobacter pylori and hepatitis A virus (HAV) are thought to have similar routes of transmission and epidemiology. This study investigated the seroprevalence of these 2 pathogens among children in rural, central Taiwan. Serum samples were collected from 856 children between 2010 and 2012 and levels of anti-HAV and anti-H. pylori antibodies were measured by ELISA. Questionnaires were used to investigate possible risk factors. The overall H. pylori and HAV infection rates were 6z and 0.8z, respectively. There was a significant difference in H. pylori infection rates (P value＝0.008), but not HAV infection rates, between different age groups. H. pylori infection rates were significantly higher in children whose mothers had lower education levels. In contrast, HAV infection rates were significantly higher in children whose fathers had lower education levels. The risk of HAV infection was also 14.20-fold higher in children whose family members had traveled to China or Southeast Asia. No significant correlation was found between H. pylori and HAV seropositivity. The seroprevalences of H. pylori and HAV were low in rural central Taiwan. Universal HAV vaccination is highly recommended to prevent outbreak due to low seroprevalence.

Heating W(CO)(PhC⋮CPh)3 (1) and diphenylacetylene in a sealed tube leads to alkyne−alkyne coupling to yield W(CO)(PhC⋮CPh)2(η4-C4Ph4) (2), W(CO)(PhC⋮CPh)(η5-C3Ph3(C5Ph5)) (3), and W(CO)(PhC⋮CPh)(η6-C3Ph3(C5Ph5)) (4) together with the tungstenocene oligomer [W(C5Ph5)2] x (5). Oxidation of 5 by diiodine affords W(η5-C5Ph5)2(I)2 (6), which is converted into the oxo complex W(η5-C5Ph5)2(O) (7) by treating with AgBF4 in wet dichloromethane solution. Reaction of W(NCMe)(PhC⋮CPh)3 (8) and 1 equiv of diphenylacetylene produces W(NCMe)(PhC⋮CPh)2(η4-C4Ph4) (9), whereas a similar reaction in the presence of excess diphenylacetylene gives mainly the metallacyclic complex W(PhC⋮CPh)(η8-C8Ph8) (10). Compound 10 reacts with carbon monoxide to afford 3 and 4, while thermolysis of pure 10 results in 5 exclusively. The reaction mechanism has been explored by C-13 labeling experiments. The structures of 7 and 10 have been established by an X-ray diffraction study. The bonding of pentaphenylcyclopentadienyl ligands of 7 is best described as a localized η3:η2 fashion. Compound 10 contains a tungstenacyclononapentaene ring with two tungsten−carbon double bonds.