Current Guideline of Chest Compression Depth for Children of All Ages May Be Too Deep for Younger Children

Figure 4

Linear regression analysis of Cd and 1/3 of the APd by age group among patients aged 1–18 years. Linear prediction lines (bold solid lines: unadjusted, fine solid and dotted lines: adjusted for sex) are shown with means (black circle) and standard deviations (error bars) by age. In some subjects with a Cd of less than 6 cm among 1 to 5 years of age, the residual depth is less than 1cm if chest compression is delivered by 5 cm depth (oblique-lined area). Chest compression depth is deeper when the chest was compressed by 5 cm than 1/3 of the APd in children between one to 7 years old (gray-colored area). APd: anteroposterior diameter; Cd: compressible diameter.