High-risk patterns and Low-risk patterns
Six LUS imaging patterns were found in these late preterm and term infants immediately after birth (Figure 2). These patterns were categorized as ”high-risk” and ”low-risk”. The low-risk patterns, which indicate a lower likelihood of lung issues, include the ”pure A-line” pattern, ”scarce discrete B-line” pattern, ”moderate discrete B-line” pattern, and ”abundant discrete B-line” pattern. In fact, the three kinds of ”discrete B-line” patterns can be easily discerned when performing LUS, and there was no need to identify each of them, as they were all significantly different from the ”pure A-line” patterns and high-risk patterns, and they are less likely to be a sign of lung issues. High-risk patterns included the ”coalesced B-line” and ”consolidation” patterns.