Abstract Since the influential 1972 monograph of Wolfgang Trilling, one widespread stylometric objection to the authenticity of 2 Thessalonians has been that the letter lacks a number of typical Pauline stylistic features. This aspect of the stylometric argumentation on 2 Thessalonians cannot stand up to statistical scrutiny. Neither the lack of diatribal passages nor the small number of rhetorical questions nor the number of concise paraenetic imperatives nor the sentence length nor the number of parentheses nor the use of prepositions distinguishes the style of 2 Thessalonians from the style of the Pauline homologoumena. The criticism of the authenticity of 2 Thessalonians, which rests on several pillars, cannot be based on the sub-argument that the letter lacks several Pauline stylistic features.
Background: Accurate measurement of transcutaneous oxygen saturation is important for the assessment of cyanosis in CHD. Aim of this study was the evaluation of a supplementary transcutaneous oxygen saturation measurement with an Apple watch (R) in children with cyanotic heart disease. Material and methods: During a six-minute walk test, measurement of transcutaneous oxygen saturation was performed simultaneously with an Oximeter (Nellcor, Medtronic, USA) and an Apple watch (R) Series 7 (Apple inc, USA) in 36 children with cyanotic heart disease. Results: Median age was 9.2 (IQR 5.7-13.8) years. Transcutaneous oxygen saturation measurement with the Apple watch (R) was possible in 35/36 and 34/36 subjects before and after six-minute walk test. Children, in whom Apple watch (R) measurement was not possible, had a transcutaneous oxygen saturation < 85% on oximeter. Before six-minute walk test, median transcutaneous oxygen saturation was 93 (IQR 91-97) % measured by oximeter and 95 (IQR 93-96) % by the Apple watch (R). After a median walking distance of 437 (IQR 360-487) m, transcutaneous oxygen saturation dropped to 92 (IQR 88-95, p < 0.001) % by oximeter and to 94 (IQR 90-96, p = 0.013) % measured with the Apple watch (R). Conclusion: In children with mild cyanosis measurement of transcutaneous oxygen saturation with an Apple watch (R) showed only valid results if transcutaneous oxygen saturation was > 85%, with higher values being measured with the smart watch. In children with moderate or severe cyanosis transcutaneous oxygen saturation, measurement with the Apple watch (R) was not reliable and cannot be recommended to monitor oxygen saturation at home.
