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Key clinical point: Increased fetal crown-chin length (CCL)/crown-rump length (CRL) ratio at 11-14 weeks’ gestation was significantly associated with an increased risk for skeletal dysplasia and could help screen the same in the first trimester.
Major finding: Of 16 fetuses with skeletal dysplasia, 62.5% had a CCL/CRL ratio above the 95th percentile, which when used as a cutoff yielded a detection rate, specificity, false-positive rate, and the positive likelihood ratio of 62.5%, 72.6%, 5.0%, and 17.5%, respectively.
Study details: Findings are from a retrospective study that compared CCL/CRL ratios on a first-trimester ultrasound examination in 418 normal fetuses with 154 fetuses affected by skeletal dysplasia.
Disclosures: No source of funding was declared. None of the other authors declared any conflict of interests.
Source: Li Y et al. J Ultrasound Med. 2022 Jan 3. doi: 10.1002/jum.15936.
Key clinical point: Increased fetal crown-chin length (CCL)/crown-rump length (CRL) ratio at 11-14 weeks’ gestation was significantly associated with an increased risk for skeletal dysplasia and could help screen the same in the first trimester.
Major finding: Of 16 fetuses with skeletal dysplasia, 62.5% had a CCL/CRL ratio above the 95th percentile, which when used as a cutoff yielded a detection rate, specificity, false-positive rate, and the positive likelihood ratio of 62.5%, 72.6%, 5.0%, and 17.5%, respectively.
Study details: Findings are from a retrospective study that compared CCL/CRL ratios on a first-trimester ultrasound examination in 418 normal fetuses with 154 fetuses affected by skeletal dysplasia.
Disclosures: No source of funding was declared. None of the other authors declared any conflict of interests.
Source: Li Y et al. J Ultrasound Med. 2022 Jan 3. doi: 10.1002/jum.15936.
Key clinical point: Increased fetal crown-chin length (CCL)/crown-rump length (CRL) ratio at 11-14 weeks’ gestation was significantly associated with an increased risk for skeletal dysplasia and could help screen the same in the first trimester.
Major finding: Of 16 fetuses with skeletal dysplasia, 62.5% had a CCL/CRL ratio above the 95th percentile, which when used as a cutoff yielded a detection rate, specificity, false-positive rate, and the positive likelihood ratio of 62.5%, 72.6%, 5.0%, and 17.5%, respectively.
Study details: Findings are from a retrospective study that compared CCL/CRL ratios on a first-trimester ultrasound examination in 418 normal fetuses with 154 fetuses affected by skeletal dysplasia.
Disclosures: No source of funding was declared. None of the other authors declared any conflict of interests.
Source: Li Y et al. J Ultrasound Med. 2022 Jan 3. doi: 10.1002/jum.15936.