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Koenigs KJ, Chou JH, Cohen S, Nolan M, Liu G, Terplan M, Cummings BM, Nielsen T, Smith NA, Distefano J, Bernstein SN, Schiff DM. Informed consent is poorly documented when obtaining toxicology testing at delivery in a Massachusetts cohort. Am J Obstet Gynecol MFM 2022; 4:100621. [PMID: 35354087 DOI: 10.1016/j.ajogmf.2022.100621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/09/2022] [Accepted: 03/23/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Positive toxicology testing at delivery can have enormous consequences for birthing persons and their families, including charges of child abuse or neglect and potential loss of custody for the birthing parent. Therefore state and national guidelines stipulate that, clinicians must obtain consent before toxicology testing at delivery. OBJECTIVE This study aimed (1) to determine clinician documentation of patient consent for peripartum toxicology testing and (2) to characterize the extent to which patient and hospital characteristics were associated with documented consent. STUDY DESIGN This was a retrospective cohort of individuals who underwent toxicology testing within 96 hours of delivery between April 2016 and April 2020 at 5 affiliated hospitals across Massachusetts. Medical records were reviewed for documentation of clinician intent to obtain maternal toxicology, testing indication, verbal consent to testing, and child protective services involvement. Hierarchical multivariable logistic regression was used to examine the association between patient and hospital characteristics and documentation of verbal consent. RESULTS Among 60,718 deliveries, 1562 maternal toxicology tests were obtained. Verbal consent for testing was documented in 466 cases (29.8%). Documented consent was lacking across most demographic groups. Consent was no more likely to be documented when a report was filed with child protective services and less likely in cases where the birthing parent lost custody before discharge (P=.003). In our multivariable model, consent was least likely to be documented when a maternal complication (abruption, hypertension, preterm labor, preterm premature rupture of membranes, or intrauterine fetal demise) was the indication for testing (adjusted odds ratio, 0.46; 95% confidence interval, 0.28-0.76). Verbal consent was twice as likely to be documented in delivery hospitals with established consent policies (adjusted odds ratio, 2.10; 95% confidence interval, 1.01-4.37). CONCLUSION Consent for toxicology testing at delivery seemed to be infrequently obtained on the basis of clinician documentation. Provider education and hospital policies for obtaining informed consent are needed to protect the rights of birthing individuals.
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Affiliation(s)
- Kathleen J Koenigs
- Brigham and Women's Hospital/Massachusetts General Hospital Integrated Residency Program in Obstetrics and Gynecology, Boston, MA (Dr Koenigs)
| | - Joseph H Chou
- Division of Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital for Children, Boston, MA (Drs Chou, Cohen, Cummings, and Schiff)
| | - Samuel Cohen
- Division of Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital for Children, Boston, MA (Drs Chou, Cohen, Cummings, and Schiff)
| | - Moira Nolan
- Massachusetts General Hospital, Boston, MA (Ms Nolan)
| | - Gina Liu
- Harvard Medical School, Boston, MA (Ms Liu)
| | | | - Brian M Cummings
- Division of Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital for Children, Boston, MA (Drs Chou, Cohen, Cummings, and Schiff)
| | - Timothy Nielsen
- Faculty of Medicine and Health, Children's Hospital Westmead Clinical School, University of Sydney, Sydney, Australia (Mr Nielsen)
| | - Nicole A Smith
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women's Hospital, Boston, MA (Dr Smith)
| | - Joseph Distefano
- Boston University School of Public Health, Boston, MA (Mr Distefano)
| | - Sarah N Bernstein
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Biology, Massachusetts General Hospital, Boston, MA (Dr Bernstein)
| | - Davida M Schiff
- Division of Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital for Children, Boston, MA (Drs Chou, Cohen, Cummings, and Schiff).
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Lu JY, Distefano J, Philips K, Chen P, Neumann AW. Effect of the compression ratio on properties of lung surfactant (bovine lipid extract surfactant) films. Respir Physiol 1999; 115:55-71. [PMID: 10344415 DOI: 10.1016/s0034-5687(99)00004-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using axisymmetric drop shape analysis (ADSA) and a captive bubble technique, the properties of lung surfactant (BLES) films under different compression ratios (i.e. the ratio of maximum to minimum surface area of the bubble) were investigated. In particular, the effect of the compression ratio of the films on the shape of the volume area surface tension-time (VAST) graphs and on the shape of the surface tension relative area (gamma-A ) graphs was examined at the air-liquid interface. Under relatively low compression ratios of the films, the VAST and gamma-A graphs indicate that the cycling is reversible (i.e. the gamma-A graphs are identical for expansion and compression). When the compression ratio of the films increases, failure tends to occur when the surface film can not support the increasing surface pressure, causing a hysteresis loop in the gamma-A graph. It was also found that low surface tension (i.e. below 5 mJ/m2) at the interface could be attained with a 30% compression ratio and collapse of the films always occurs near or below 1 mJ/m2.
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Affiliation(s)
- J Y Lu
- Department of Mechanical and Industrial Engineering, University of Toronto, Ontario, Canada
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