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In this Forum the authors suggest that a growing intensity of contradictory public and private interests in education is a persistent force in education development stemming from the increasing centrality of education in contemporary society. Contrasting South Korea's effective policies ensuring equality of educational opportunity with its world-leading levels of family expenditures on private education services demonstrates this force. A brief comparison with the US also indicates that such a contradiction and symbiosis may likely to be more universal than is often assumed. This observation can be demonstrated in particular by a historical analysis of the consequences of dynamic conflict between public and private interests in the Republic of Korea (hereafter, South Korea), a centralised national system more equitable and effective than most. With its global leading-edge conflict between effective public education policies and dramatic runaway private actions by families to gain advantages for their children, this country illustrates where this dynamic might take education systems in the future, for better and worse. South Korea is then briefly contrasted with the United States, a large decentralised nation that struggles with educational equality and uneven effectiveness. Showing that a transforming synergy between public and private interests occurs in these contrasting education systems suggests a more universal pattern than is often acknowledged.

Between April and May 2022, 10 healthy adult non-patients were recruited from Pusan National University Hospital. Venous blood drawn into a syringe was transferred into test tubes with a zero-to-45-minute delay. The transfer was done sequentially in two positions with the syringe and the needle adaptor end (1) heading downwards and (2) heading upwards. Haemoglobin levels gradually increased over time in position 1 transfer while they gradually decreased in position 2. Therefore, blood must be transferred quickly from a syringe to a tube for reliable test results. What this study adds: Our findings confirm that delays between blood collection and transfer can affect haemoglobin levels. [ABSTRACT FROM AUTHOR]

Background: For successful lighted stylet intubation, bending the lighted stylet with an appropriate angle is a prerequisite. The purpose of this study was to compare three different bend angles of 70, 80, and 90 degrees for lighted stylet intubation. Methods: The patient trachea was intubated with a lighted stylet bent at 70, 80, or 90 degrees according to the randomly allocated groups (group I, II, and III, respectively). A lighted stylet combined with a tracheal tube was prepared with a bend angle of 70, 80, or 90 degrees according to the assigned group. We checked the success rate at the first attempt and overall success rate for the two attempts. Additionally, we measured search time, which was time from insertion of the bent union into the patient mouth to the start of advancing the tracheal tube while separating it from the lighted stylet, and evaluated postoperative sore throat (POST) at 2, 4, and 24 h after the recovery from anesthesia. Results: There was no statistically significant difference between group I, II, and III for success rate at first attempt (73.9 %, 88.2 %, and 94.7 %, respectively, p = 0.178), even though there was a trend of increasing success rate with increasing bend angles. For overall success rate, there was similar result to that in the first attempt between the groups I, II, and III (82.6 %, 94.1 %, and 100 %, respectively, p = 0.141). However, search time took significantly longer in group I than groups II and III (p < 0.001). When group II and III were compared for POST with numeric rating scale (0–10), it was significantly lower in group II than III at 2, 4 h after the recovery (0.5 vs. 2.3, p = 0.016, and 0.4 vs. 1.8, p = 0.011, respectively). Conclusions: The bend angle of the lighted stylet affected the time required for tracheal intubation and POST in our study. 80 and 90 degrees as a bend angle seem to be acceptable for clinicians in regard to success rate of lighted stylet intubation. Considering the success rate of lighted stylet intubation and POST, the bend angle of 80 degrees might be better than 70 and 90 degrees. Trial registration: ClinicalTrials.gov Identifier NCT03693235, registered on 30 September 2018. [ABSTRACT FROM AUTHOR]

The article discusses the educational development and policy in various countries. Topics include South Korea's educational policies ensuring equality of educational opportunity and expenditures on private education services; and S. Korea's comparison with the U.S. which indicates the current policy of the education.