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Badmus OM, Adenaya OR, Aderinwale OA, Ewuoso BO, Awolaja BS, Ade-Onojobi AO. Umbilical arterial blood lactate as predictor of early neonatal outcome and evaluation of intrapartum asphyxia. J Taibah Univ Med Sci 2024; 19:911-918. [PMID: 39319035 PMCID: PMC11417525 DOI: 10.1016/j.jtumed.2024.08.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Accepted: 08/21/2024] [Indexed: 09/26/2024] Open
Abstract
Background Perinatal asphyxia is a leading cause of under-5 mortality and exerts great pressure on the health system. Adequate foetal monitoring in labour is paramount in the early detection of foetal distress to prevent perinatal asphyxia. Several methods of foetal monitoring are in use with varying efficacy. This study investigated the efficacy of umbilical arterial (UA) lactate assay in predicting adverse perinatal outcomes. Methodology This was a prospective longitudinal study involving 160 pregnant women in the active phase of labour at term who met the inclusion criteria. They were recruited using a consecutive sampling technique and underwent a cardiotocography. Then they were classified into normal and abnormal cardiotocographic groups. At delivery, the UA blood of all of the babies was collected and assayed for serum lactate, and the levels were correlated with the perinatal outcome. The perinatal outcomes were measured by Apgar scores, admission into the neonatal unit, and hypoxic ischaemic encephalopathy. Analysis was done to determine the sensitivity and specificity of UA lactate in predicting birth asphyxia, hypoxic ischaemic encephalopathy, and neonatal unit admission. Results The mean age ± standard deviation (SD) between the two cardiotocography (CTG) groups, normal years (30.55 ± 5.59) and abnormal years (29.86 ± 5.51), were similar. A critical UA lactate concentration > 9.1 mmol/L predicted Apgar scores < 7 at 5 min with a sensitivity and specificity of 76.47% (CI: 50.1-93.2) and 91.55% (CI: 85.7-95.6%), respectively. Also, the need for neonatal unit admission was predicted at a cut-off point >9.1 mmol/L with a sensitivity of 61.90% (CI: 38.4-81.9) and specificity of 91.30% (CI: 85.3-95.4). Umbilical artery lactate levels > 11.2 mmol/L predicted the development of hypoxic ischaemic encephalopathy in neonates with a sensitivity of 100% (CI: 39.8-100.0) and specificity of 88.39% (CI: 82.3-93.0). Conclusion Umbilical artery lactate correlates with adverse pregnancy outcomes and is an excellent tool for predicting adverse neonatal outcome.
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Affiliation(s)
- Olufemi M. Badmus
- Department of Obstetrics and Gynaecology, Federal Medical Centre, Abeokuta, Ogun State, Nigeria
| | - Olaide R. Adenaya
- Department of Obstetrics and Gynaecology, Federal Medical Centre, Abeokuta, Ogun State, Nigeria
| | - Oluseyi A. Aderinwale
- Department of Obstetrics and Gynaecology, Federal Medical Centre, Abeokuta, Ogun State, Nigeria
| | - Bernard O. Ewuoso
- Department of Obstetrics and Gynaecology, Federal Medical Centre, Abeokuta, Ogun State, Nigeria
| | - Babatunde S. Awolaja
- Department of Obstetrics and Gynaecology, Federal Medical Centre, Abeokuta, Ogun State, Nigeria
| | - Adedoyin O. Ade-Onojobi
- Department of Obstetrics and Gynaecology, Federal Medical Centre, Abeokuta, Ogun State, Nigeria
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Mönkkönen A, Rajala K, Backman H, Keski-Nisula L. Umbilical arterial lactate levels after normal vaginal and elective cesarean delivery: The role of a longer active second stage most significant in high levels after vaginal delivery. J Obstet Gynaecol Res 2024; 50:557-565. [PMID: 38168051 DOI: 10.1111/jog.15875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/16/2023] [Indexed: 01/05/2024]
Abstract
AIM To evaluate umbilical arterial lactate concentrations after spontaneous vaginal delivery and after elective Cesarean delivery, and to study the simultaneous effects of maternal and obstetric variables in high lactate levels in vaginally delivered healthy term singletons. METHODS The birth register study included information about the umbilical artery lactate values and clinical perinatal data from 7723 women and their singleton newborns (7301 spontaneous vaginal and 422 elective cesareans) from Kuopio University Hospital, Finland. High lactate levels were evaluated more extensively among healthy term neonates (N = 6541), to evaluate high levels after normal vaginal labors. RESULTS The mean lactate level was significantly lower after elective cesarean compared to vaginal delivery (2.42 [0.94] vs. 3.56 [1.62] mmol/l; p < 0.0001). Consequently, the 90th percentile limit values were 3.60 and 5.80 mmol/L. Among healthy term newborns born vaginally, higher lactate values (≥5.80 mmol/L) were independently associated with a longer duration of the active second stage of labor (ORs 1.91-10.97) and duration of ruptured fetal membranes (ORs 1.36-2.46), higher gestational age at birth (ORs 1.41-1.86), null parity (OR 2.17), maternal infection (OR 1.81) and short maternal stature (OR 1.45). We report 90th/95th limits for umbilical arterial lactate values in relation to the various durations of labors for term newborns who are delivered by the vaginal route. CONCLUSIONS Even though the high umbilical lactate levels may indicate serious birth asphyxia, levels after vaginal birth reflect the physiological stress and subclinical transient asphyxia frequently seen in normal vaginal deliveries.
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Affiliation(s)
- Arttu Mönkkönen
- Institute of Clinical Medicine, School of Medicine, University of Eastern Finland, Kuopio, Finland
- Kontiolahti Health Center, Siun Sote, Kontiolahti, Finland
| | - Katri Rajala
- Department of Clinical Genetics, Kuopio University Hospital, Kuopio, Finland
| | - Heli Backman
- Department of Obstetrics and Gynecology, Kuopio University Hospital, Wellbeing services county of North Savo, Kuopio, Finland
| | - Leea Keski-Nisula
- Institute of Clinical Medicine, School of Medicine, University of Eastern Finland, Kuopio, Finland
- Department of Obstetrics and Gynecology, Kuopio University Hospital, Wellbeing services county of North Savo, Kuopio, Finland
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Li YH, Lei GY, Guo J, Yi M, Fu YJ, Wang GY. Effect of maternal oxygen supplementation for parturient undergoing elective cesarean section by high-flow nasal oxygen compared with room air on fetal acidemia: study protocol for a randomized controlled trial. Trials 2024; 25:73. [PMID: 38254137 PMCID: PMC10802011 DOI: 10.1186/s13063-024-07927-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Maternal oxygen supplementation is usually used as an intrauterine resuscitation technique to prevent fetal hypoxia and acidemia during delivery. However, there has been a great deal of controversy regarding the effects of prophylactic maternal oxygen during cesarean section, during which the incidence of fetal acidemia seems to be higher compared with that during labor. High-flow nasal oxygen (HFNO) can improve oxygenation better in patients with high-flow oxygen airflow. The purpose of this study is to determine whether maternal oxygen supplementation with HFNO has a positive effect on fetal acidemia during cesarean section through umbilical arterial blood gas analysis. METHOD This prospective, single-center, randomized, double-blinded trial will enroll 120 patients undergoing cesarean section. Participants will be randomly assigned to the HFNO group or air group at a 1:1 ratio. For parturients in the HFNO group, the flow rate is 40L/min, and the oxygen is heated to 37℃ with humidity 100% oxygen concentration through the Optiflow high-flow nasal oxygen system. And for the air group, the flow rate is 2 L/min with an air pattern through the same device. The primary outcome was umbilical artery (UA) lactate. Secondary outcomes include UA pH, PO2, PCO2, BE, the incidence of pH < 7.20 and pH < 7.10, Apgar scores at 1 and 5 min, and neonatal adverse outcomes. DISCUSSION Our study is the first trial investigating whether maternal oxygen supplementation with HFNO can reduce the umbilical artery lactate levels and the incidence of fetal acidemia in cesarean section under combined spinal-epidural anesthesia. TRIAL REGISTRATION ClinicalTrials.gov NCT05921955. Registered on 27 June 2023.
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Affiliation(s)
- Yun-Hui Li
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Gui-Yu Lei
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Jun Guo
- Department of Gynecologic and Obstetric, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Meng Yi
- Department of Gynecologic and Obstetric, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Yu-Jing Fu
- Department of Gynecologic and Obstetric, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Gu-Yan Wang
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China.
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Musaba MW, Nambozo B, Mukunya D, Wandabwa J, Barageine JK, Kiondo P, Napyo A, Sserwanja Q, Weeks AD, Tumwine JK, Ndeezi G. Maternal and umbilical cord blood lactate for predicting perinatal death: a secondary analysis of data from a randomized controlled trial. BMC Pediatr 2023; 23:179. [PMID: 37072754 PMCID: PMC10111771 DOI: 10.1186/s12887-023-04008-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 04/12/2023] [Indexed: 04/20/2023] Open
Abstract
BACKGROUND In high resource settings, lactate and pH levels measured from fetal scalp and umbilical cord blood are widely used as predictors of perinatal mortality. However, the same is not true in low resource settings, where much of perinatal mortality occurs. The scalability of this practice has been hindered by difficulty in collecting fetal scalp and umbilical blood sample. Little is known about the use of alternatives such as maternal blood, which is easier and safer to obtain. Therefore, we aimed to compare maternal and umbilical cord blood lactate levels for predicting perinatal deaths. METHODS This was secondary analysis of data from a randomized controlled trial assessing the effect of sodium bicarbonate on maternal and perinatal outcomes among women with obstructed labour at Mbale regional referral hospital in Eastern Uganda. Lactate concentration in maternal capillary, myometrial, umbilical venous and arterial blood was measured at the bedside using a lactate Pro 2 device (Akray, Japan Shiga) upon diagnosis of obstructed labour. We constructed Receiver Operating Characteristic curves to compare the predictive ability of maternal and umbilical cord lactate and the optimal cutoffs calculated basing on the maximal Youden and Liu indices. RESULTS Perinatal mortality risk was: 102.2 deaths per 1,000 live births: 95% CI (78.1-130.6). The areas under the ROC curves were 0.86 for umbilical arterial lactate, 0.71 for umbilical venous lactate, and 0.65 for myometrial lactate, 0.59 for maternal lactate baseline, and 0.65 at1hr after administration of bicarbonate. The optimal cutoffs for predicting perinatal death were 15 0.85 mmol/L for umbilical arterial lactate, 10.15mmol/L for umbilical venous lactate, 8.75mmol/L for myometrial lactate, and 3.95mmol/L for maternal lactate at recruitment and 7.35mmol/L after 1 h. CONCLUSION Maternal lactate was a poor predictor of perinatal death, but umbilical artery lactate has a high predictive value. There is need for future studies on the utility of amniotic fluid in predicting intrapartum perinatal deaths.
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Affiliation(s)
- Milton W Musaba
- Department of Obstetrics and Gynaecology, Busitema University/ Mbale Regional Referral and Teaching Hospital, Mbale, Uganda.
| | | | - David Mukunya
- Sanyu Africa Research Institute, Mbale, Uganda
- Department of Public and Community Health, Busitema University Faculty of Health Sciences, Mbale, Uganda
| | - Julius Wandabwa
- Department of Obstetrics and Gynaecology, Busitema University/ Mbale Regional Referral and Teaching Hospital, Mbale, Uganda
| | - Justus K Barageine
- Department of Obstetrics & Gynaecology, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Paul Kiondo
- Department of Obstetrics & Gynaecology, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Agnes Napyo
- Department of Public and Community Health, Busitema University Faculty of Health Sciences, Mbale, Uganda
| | | | - Andrew D Weeks
- Department of Obstetrics and Gynaecology, Busitema University/ Mbale Regional Referral and Teaching Hospital, Mbale, Uganda
- Sanyu Africa Research Institute, Mbale, Uganda
- Sanyu Research Unit, University of Liverpool, University of Liverpool/Liverpool Women's Hospital, Liverpool, UK
| | - James K Tumwine
- Department of Paediatrics and Child Health, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Grace Ndeezi
- Department of Paediatrics and Child Health, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
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Sire F, Ponthier L, Eyraud JL, Catalan C, Aubard Y, Coste Mazeau P. Comparative study of dinoprostone and misoprostol for induction of labor in patients with premature rupture of membranes after 35 weeks. Sci Rep 2022; 12:14996. [PMID: 36056056 PMCID: PMC9439998 DOI: 10.1038/s41598-022-18948-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 08/22/2022] [Indexed: 11/23/2022] Open
Abstract
The modalities of induction of labor in the event of premature rupture of membranes are controversial. The main purpose of this study was to compare the modalities of delivery after the use of dinoprostone or misoprostol for labor induction in the preterm rupture of membranes after 35 weeks in women with an unfavorable cervix. We then studied maternal and fetal morbidity for the two drugs. Retrospective, single-center, comparative cohort study in a level 3 maternity unit in France from 2009 to 2018 comparing vaginal administration of misoprostol 50 µg every six hours (maximum 150 µg) and administration of dinoprostone 10 mg, a slow-release vaginal insert, for 24 h (maximum 20 mg), for labor induction in the preterm rupture of membranes after 35 weeks in women with an unfavorable cervix (Bishop score < 6). We included 904 patients, 656 in the misoprostol group and 248 in the dinoprostone group. Vaginal delivery rate was significantly higher in the dinoprostone group (89% vs. 82%, p = 0.016). There were more cesarean sections for abnormal fetal heart rate in the misoprostol group (p = 0.005). The time interval from induction to the beginning of the active phase of labor and the duration of labor were shorter in the misoprostol group than in the dinoprostone group (437 min vs. 719 min, p < 0.001 and 335 min vs. 381 min, p = 0.0023, respectively). Maternal and neonatal outcomes were not significantly different in the two groups. Vaginal dinoprostone used for labor induction in preterm rupture of membranes seems to be more effective for vaginal delivery than vaginal misoprostol (50 µg).
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Affiliation(s)
- Flavie Sire
- Department of Gynaecology and Obstetrics, Mother and Children's Hospital, Limoges Regional University Hospital, 8 Avenue Dominique Larrey, 87000, Limoges, France
| | - Laure Ponthier
- Department of Pediatrics, Mother and Children's Hospital, Limoges Regional University Hospital, 8 Avenue Dominique Larrey, 87000, Limoges, France
| | - Jean-Luc Eyraud
- Department of Gynaecology and Obstetrics, Mother and Children's Hospital, Limoges Regional University Hospital, 8 Avenue Dominique Larrey, 87000, Limoges, France
| | - Cyrille Catalan
- Department of Gynaecology and Obstetrics, Mother and Children's Hospital, Limoges Regional University Hospital, 8 Avenue Dominique Larrey, 87000, Limoges, France
| | - Yves Aubard
- Department of Gynaecology and Obstetrics, Mother and Children's Hospital, Limoges Regional University Hospital, 8 Avenue Dominique Larrey, 87000, Limoges, France
| | - Perrine Coste Mazeau
- Department of Gynaecology and Obstetrics, Mother and Children's Hospital, Limoges Regional University Hospital, 8 Avenue Dominique Larrey, 87000, Limoges, France.
- Centre de Biologie et de Recherche en Santé, CHRU Limoges, Université de Limoges, Inserm U1092, 2 rue du Pr Bernard Descottes, 87000, Limoges, France.
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Tagin MA, Gunn AJ. Neonatal encephalopathy and potential lost opportunities: when the story fits, please cool. Arch Dis Child Fetal Neonatal Ed 2021; 106:458-459. [PMID: 33963006 DOI: 10.1136/archdischild-2021-321696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/20/2021] [Accepted: 04/27/2021] [Indexed: 11/03/2022]
Affiliation(s)
| | - A J Gunn
- Physiology and Paediatrics, University of Auckland, Auckland, New Zealand
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Relationship Between Umbilical Cord Gas Values and Neonatal Outcomes: Implications for Electronic Fetal Heart Rate Monitoring. Obstet Gynecol 2021; 138:366-373. [PMID: 34352847 DOI: 10.1097/aog.0000000000004515] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/10/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the relationship between umbilical artery cord gas values and fetal tolerance of labor, as reflected by Apgar score. We hypothesized the existence of wide biological variability in fetal tolerance of metabolic acidemia, which, if present, would weaken one fundamental assumption underlying the use of electronic fetal heart rate (FHR) monitoring. METHODS We conducted a retrospective cohort study of term, singleton, nonanomalous fetuses delivered in our institution between March 2012 and July 2020. Universally obtained umbilical cord gas values and Apgar scores were extracted. We calculated Spearman correlation coefficients and receiver operating characteristic curves for various levels of umbilical artery pH, base excess, and Apgar scores. RESULTS We analyzed data from 29,787 deliveries. The statistical correlation between umbilical artery pH and base excess and both 1- and 5-minute Apgar scores was weak or nonexistent in all pH range subgroups (range 0.064-0.213). Receiver operating characteristic curve analysis suggested umbilical artery pH value of 7.22 yields the best discrimination for prediction of a severely depressed newborn (5-minute Apgar score less than 4), but sensitivity and specificity for this predictive value remains poor to moderate. CONCLUSION The use of electronic FHR monitoring is predicated on a documented relationship between FHR patterns and umbilical artery pH, and an assumed correlation between pH and fetal outcomes, reflecting fetal tolerance of labor and delivery. Our data demonstrate a weak-to-absent correlation between metabolic acidemia and even short-term fetal condition, thus significantly weakening this latter assumption. No amount of future modification of FHR pattern interpretation to better predict newborn pH is likely to lead to improved newborn outcomes, given this weakness in a fundamental assumption on which FHR monitoring is based.
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Antończyk A, Ochota M, Niżański W. Umbilical Cord Blood Gas Parameters and Apgar Scoring in Assessment of New-Born Dogs Delivered by Cesarean Section. Animals (Basel) 2021; 11:ani11030685. [PMID: 33806500 PMCID: PMC8000146 DOI: 10.3390/ani11030685] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/23/2021] [Accepted: 02/26/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary The article presents the results of the clinical evaluation and umbilical cord blood analysis obtained from newborn pups delivered by the elective Caesarean section. In human medicine both the umbilical cord blood and Apgar score were proved to provide valuable information on neonatal status. In veterinary medicine very few reports concerning the relation between the clinical neonatal assessment (Apgar score) and umbilical cord blood parameters exist. All puppies show mild respiratory acidemia regardless the Apgar scores result. The lactates were not elevated whereas all the puppies with low Apgar sores had higher glucose and mortality rates. Only pups with low initial Apgar scores were at risk of death within first 24 h. Adaptation to the extra-uterine life is crucial and any practical improvement in neonatal diagnostics and care would be beneficial for newborn puppy survival. Abstract The article presents the results of the clinical evaluation (Apgar scores, AS) and umbilical cord blood gas analysis (UCBGA) obtained from clamped umbilical cords of newborn pups delivered by the elective Caesarean section. The study was planned as a controlled clinical study, the newborns were allocated into one of the groups, I—critical neonates (severe distress, AS ≤ 3), II—weak neonates (moderate distress, AS 4–6) and III—healthy neonates (no distress, AS ≥ 7). The following parameters were evaluated: pH (pH units), carbon dioxide partial pressure (pCO2; mmHg), oxygen partial pressure (pO2; mmHg), actual bicarbonate (cHCO3−; mmol/L), total carbon dioxide (cTCO2; mmol/L), base excess of extracellular fluid (BE(ecf); mmol/L), base excess of blood (BE(b); mmol/L), oxygen saturation (csO2; %), lactate (Lac; mg/dL), hematocrit (Hct; %PCV), hemoglobin (cHgb; g/dL), glucose (Glu; mg/dL), ions (Na, K, Ca, Cl). The majority of puppies had low AS at birth (AS 4–6 in 38.1% and AS ≤ 3 in 57.1% of the neonates), but most of them (85.7%) improved by the 20th min. reaching AS of 7 and more. Moreover, puppies with lower AS (≤ 3) were at higher risk of death within the first 24h (20.8% did not survive). The positive correlation was found between Apgar score measured at 0 min and pH (r = 0.46, p = 0.01), and between Apgar score (at 0 min) and base excess in whole blood measured [BE(b)] r = 0.36, p = 0.03). Whereas, a negative correlation was detected between Apgar score at 0 and 5th min and glycemia (r = −0.42, p = 0.05, r = −0.34, p = 0.02 respectively. Overall, the puppies with higher glucose levels had lower Apgar scores and were at higher risk of death. Furthermore, in our study, the newborn puppies had mild acidemia with elevated pCO2 levels and the HCO3 at the lower range of normal limits, suggesting the mixed component in the acidemic state. Adaptation to extra-uterine life is crucial and any practical improvement in neonatal diagnostics and care would be beneficial for newborn puppy survival.
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Affiliation(s)
- Agnieszka Antończyk
- Wrocław University of Environmental and Life Sciences, Department and Clinic of Surgery, 50-366 Wrocław, Poland;
| | - Małgorzata Ochota
- Wrocław University of Environmental and Life Sciences, Department of Reproduction and Clinic of Farm Animals, 50-366 Wrocław, Poland;
- Correspondence:
| | - Wojciech Niżański
- Wrocław University of Environmental and Life Sciences, Department of Reproduction and Clinic of Farm Animals, 50-366 Wrocław, Poland;
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Improvement in the Prediction of Neonatal Hypoxic-Ischemic Encephalopathy with the Integration of Umbilical Cord Metabolites and Current Clinical Makers. J Pediatr 2021; 229:175-181.e1. [PMID: 33039387 DOI: 10.1016/j.jpeds.2020.09.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To validate our previously identified candidate metabolites, and to assess the ability of these metabolites to predict hypoxic-ischemic encephalopathy (HIE) both individually and combined with clinical data. STUDY DESIGN Term neonates with signs of perinatal asphyxia, with and without HIE, and matched controls were recruited prospectively at birth from 2 large maternity units. Umbilical cord blood was collected for later batch metabolomic analysis by mass spectroscopy along with clinical details. The optimum selection of clinical and metabolites features with the ability to predict the development of HIE was determined using logistic regression modelling and machine learning techniques. Outcome of HIE was determined by clinical Sarnat grading and confirmed by electroencephalogram grade at 24 hours. RESULTS Fifteen of 27 candidate metabolites showed significant alteration in infants with perinatal asphyxia or HIE when compared with matched controls. Metabolomic data predicted the development of HIE with an area under the curve of 0.67 (95% CI, 0.62-0.71). Lactic acid and alanine were the primary metabolite predictors for the development of HIE, and when combined with clinical data, gave an area under the curve of 0.96 (95% CI, 0.92-0.95). CONCLUSIONS By combining clinical and metabolic data, accurate identification of infants who will develop HIE is possible shortly after birth, allowing early initiation of therapeutic hypothermia.
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Debuf MJ, Carkeek K, Piersigilli F. A Metabolomic Approach in Search of Neurobiomarkers of Perinatal Asphyxia: A Review of the Current Literature. Front Pediatr 2021; 9:674585. [PMID: 34249811 PMCID: PMC8267248 DOI: 10.3389/fped.2021.674585] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/24/2021] [Indexed: 11/13/2022] Open
Abstract
Perinatal asphyxia and the possible sequelae of hypoxic-ischemic encephalopathy (HIE), are associated with high morbidity and mortality rates. The use of therapeutic hypothermia (TH) commencing within the first 6 h of life-currently the only treatment validated for the management of HIE-has been proven to reduce the mortality rate and disability seen at follow up at 18 months. Although there have been attempts to identify neurobiomarkers assessing the severity levels in HIE; none have been validated in clinical use to date, and the lack thereof limits the optimal treatment for these vulnerable infants. Metabolomics is a promising field of the "omics technologies" that may: identify neurobiomarkers, help improve diagnosis, identify patients prone to developing HIE, and potentially improve targeted neuroprotection interventions. This review focuses on the current evidence of metabolomics, a novel tool which may prove to be a useful in the diagnosis, management and treatment options for this multifactorial complex disease. Some of the most promising metabolites analyzed are the group of acylcarnitines: Hydroxybutyrylcarnitine (Malonylcarnitine) [C3-DC (C4-OH)], Tetradecanoylcarnitine [C14], L-Palmitoylcarnitine [C16], Hexadecenoylcarnitine [C16:1], Stearoylcarnitine [C18], and Oleoylcarnitine [C18:1]. A metabolomic "fingerprint" or "index," made up of 4 metabolites (succinate × glycerol/(β-hydroxybutyrate × O-phosphocholine)), seems promising in identifying neonates at risk of developing severe HIE.
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Affiliation(s)
- Marie Julie Debuf
- Division of Neonatology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium
| | - Katherine Carkeek
- Division of Neonatology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium
| | - Fiammetta Piersigilli
- Division of Neonatology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium
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Neacsu A, Herghelegiu CG, Voinea S, Dimitriu MCT, Ples L, Bohiltea RE, Braila AD, Nastase L, Bacalbasa N, Chivu LI, Furtunescu F, Ioan RG. Umbilical cord lactate compared with pH as predictors of intrapartum asphyxia. Exp Ther Med 2020; 21:80. [PMID: 33363591 DOI: 10.3892/etm.2020.9513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 10/21/2020] [Indexed: 02/06/2023] Open
Abstract
Despite advances in fetal monitoring during labor, one of the most critical causes of neonatal death and neurologic injuries remains intrapartum asphyxia. Umbilical cord gases can be used to detect acidosis and fetal distress. We conducted a retrospective, multicenter study to evaluate umbilical cord blood pH and lactate as a mean of evaluating the degree of intrapartum hypoxia and also to establish which of the two is more reliable in predicting morbidity in term neonates. The present study utilized a total of 124 cases that met the criteria for intrapartum asphyxia and 150 normal term newborns that were randomly selected as case control. Both umbilical cord lactate and pH proved to be accurate predictors of neonatal morbidity caused by intrapartum hypoxia. Lactate proved to be superior to pH in predicting adverse neonatal outcome. The greatest sensibility and specificity in predicting intrapartum asphyxia were achieved in our study by using a cutoff value of 3.75 mmol/l for lactate and 7.24 for pH.
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Affiliation(s)
- Adrian Neacsu
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, 'Sf. Ioan' Emergency Clinical Hospital, 042122 Bucharest, Romania
| | - Cătălin Gabriel Herghelegiu
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, 'Alessandrescu-Rusescu' National Institute for Healthcare of Mother and Child, 020395 Bucharest, Romania
| | - Silviu Voinea
- Department of Surgery, Institute of Oncology 'Prof. Dr. Alexandru Trestioreanu', 020122 Bucharest, Romania
| | - Mihai Cornel Traian Dimitriu
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics-Gynecology, 'Sf. Pantelimon' Emergency University Hospital, 021623 Bucharest, Romania
| | - Liana Ples
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, Bucur Maternity Hospital, 012361 Bucharest, Romania
| | - Roxana Elena Bohiltea
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, University Emergency Hospital Bucharest, 050098 Bucharest, Romania
| | - Anca Daniela Braila
- Department of Obstetrics and Gynecology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Leonard Nastase
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, 'Alessandrescu-Rusescu' National Institute for Healthcare of Mother and Child, 020395 Bucharest, Romania
| | - Nicolae Bacalbasa
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, 'I. Cantacuzino' Clinical Hospital, 030167 Bucharest, Romania
| | - Laura Ioana Chivu
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Pathophysiology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Florentina Furtunescu
- Department of Public Health and Management, Faculty of Medicine, 'Carol Davila' University of Medicine and Pharmacy, 050463 Bucharest, Romania
| | - Raluca Gabriela Ioan
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 020021 Bucharest, Romania.,Department of Obstetrics and Gynecology, 'Alessandrescu-Rusescu' National Institute for Healthcare of Mother and Child, 020395 Bucharest, Romania
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12
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Fan I, Hiersch L, Belov Y, Amikam U, Tzur Y, Hershkovitz G, Sindel O, Alpern S, Segal R, Dangot A, Many A, Yogev Y, Ashwal E. The effects of time and temperature on umbilical cord gas analysis. J Matern Fetal Neonatal Med 2020; 35:4358-4364. [PMID: 33225776 DOI: 10.1080/14767058.2020.1849118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Our objective was to evaluate the effects of time and temperature on umbilical-cord blood analysis. METHODS This prospective study included the term spontaneous vaginal deliveries. One venous and seven arterial samples were drawn from each umbilical cord within 5 min from delivery. Three samples were immediately refrigerated (3 °C), while all other samples were stored at room temperature (23-26 °C). Samples were analyzed in pairs (refrigerated and room-temperature samples) at 0, 20, 40, and 60 min after delivery for pH and lactate levels. Repeated-measures analysis using a generalized linear model was used to compare the change in pH and lactate values over time. RESULTS 518 samples from 74 women were analyzed. The mean gestational age was 39.1 ± 1.1 weeks. All neonates had an Apgar score of ≥9 in the 1st and 5th minutes. Mean arterial pH and lactate levels at delivery (time 0) were 7.32 ± 0.07 and 4.00 ± 1.36 mmol/L, respectively. Over time, a statistically significant decrease in pH and a reciprocal increase in lactate levels were observed. The mean change in arterial pH following 60 min was 0.021 ± 0.028 (room-temperature) and 0.016 ± 0.023 (refrigerated); p < 0.001. Compared to pH, a greater change was demonstrated in lactate levels over time; the mean change in lactate following 60 min was -0.896 ± 0.535 (room temperature) and -0.512 ± 0.450 mmol/L (refrigerated). Temperature significantly altered both pH and lactate levels, but lactate levels were altered at earlier time points. CONCLUSION Both time and temperature have significant effects on cord blood analysis. Yet, these changes are minor and may not have any clinical significance unless in extreme cases in which medicolegal aspects emerge.
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Affiliation(s)
- Isabella Fan
- Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Liran Hiersch
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yekaterina Belov
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Uri Amikam
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yossi Tzur
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gal Hershkovitz
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofra Sindel
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sharon Alpern
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Roy Segal
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ayelet Dangot
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ariel Many
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yariv Yogev
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eran Ashwal
- Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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13
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Vanspranghels R, Houfflin-Debarge V, Deken V, Rakza T, Maboudou P, Storme L, Ghesquiere L, Garabedian C. Umbilical cord arterial and venous gases, ionogram, and glucose level for predicting neonatal morbidity at term. Eur J Obstet Gynecol Reprod Biol 2020; 252:181-186. [PMID: 32622102 DOI: 10.1016/j.ejogrb.2020.06.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To determine which parameter of umbilical arterial cord gas analysis, pH, base deficit, lactate concentration, ionogram values, or glucose level index is the best predictor of neonatal morbidity at term. DESIGN We conducted a 15-month retrospective cohort study that included all nonanomalous, singleton, term births at a single center. The predictive ability of lactate concentration, base deficit, pH, ionogram values, and glucose level were compared using receiver-operating characteristic curves for global and neurological composite morbidity. Optimal cutoff values for lactate concentration, base deficit, and pH were estimated based on their maximum area under the curve. RESULTS We included 5161 newborns: 52 (1.01 %) had global composite morbidity, and 17 had (0.33 %) neurological composite morbidity. Blood levels of potassium, calcium, natremia, glucose level, and HCO3- did not differ significantly between groups. pH, partial pressure of CO2, partial pressure of O2, base deficit, and lactate levels differed significantly between neonates in the groups with and without global composite morbidity. Nearly similar results were found for neurological composite morbidity. The predictive ability did not differ between arterial pH and arterial lactate concentration (P = .25) and base deficit (P = .79). Optimal cutoff values to predict global composite morbidity were arterial pH 7.144, venous pH 7.236, and arterial lactate concentration 6.5 mmol/L. CONCLUSIONS Acid-base status analysis remains the best objective indicator for predicting neonatal morbidity and can be estimated using pH, lactate, or base deficit. Ionogram cord blood composition and glucose level do not appear to be useful for this purpose.
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Affiliation(s)
- Roxane Vanspranghels
- CHU Lille, Department of Obstetrics, FHU "1000 Days for Health", F-59000 Lille, France.
| | | | - Valérie Deken
- Univ Lille, CHU Lille, EA 2694, Public Health: Epidemiology and Quality of Care, F-59000 Lille, France
| | - Thameur Rakza
- CHU Lille, Department of Obstetrics, FHU "1000 Days for Health", F-59000 Lille, France
| | - Patrice Maboudou
- CHU Lille, Biologic and Pathologic Center, F-59000 Lille, France
| | - Laurent Storme
- CHU Lille, Department of Neonatology, FHU "1000 Days for Health", F-59000 Lille, France
| | - Louise Ghesquiere
- CHU Lille, Department of Obstetrics, FHU "1000 Days for Health", F-59000 Lille, France
| | - Charles Garabedian
- CHU Lille, Department of Obstetrics, FHU "1000 Days for Health", F-59000 Lille, France
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14
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Bowe S, Staff AC, Sugulle M. Gestational age reference ranges for umbilical cord blood lactate: An external validation study of post-date pregnancies. Acta Obstet Gynecol Scand 2020; 99:1430-1433. [PMID: 32441769 DOI: 10.1111/aogs.13922] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/15/2020] [Accepted: 05/18/2020] [Indexed: 11/30/2022]
Abstract
A previous study published in 2008 by Wiberg et al demonstrated increasing umbilical cord blood lactate at delivery by gestational age in vigorous offspring (n = 10 169, gestational age 24-43 weeks). Based on these results the authors concluded that gestational age-independent umbilical cord lactate cut-off could give false-negative or false-positive diagnosis of lacticemia. To our knowledge, these findings have not been incorporated into clinical interpretations in delivery units. To perform an external validity study for the findings by Wiberg et al, we analyzed umbilical cord blood lactate levels according to gestational age in a post-date delivery study population at our large, tertiary obstetric unit. The parallel finding of our study to that of Wiberg et al highlights the importance of using available gestational age dependent reference ranges (eg as presented in Wiberg's publication), when interpreting umbilical cord blood lactate levels for fetal wellbeing.
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Affiliation(s)
- Sophie Bowe
- Division of Obstetrics and Gynecology, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Anne C Staff
- Division of Obstetrics and Gynecology, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Meryam Sugulle
- Division of Obstetrics and Gynecology, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
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15
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Buckley VA, Wu J, De Vries B. Outcomes following acute tocolysis prior to emergency caesarean section. Aust N Z J Obstet Gynaecol 2020; 60:884-889. [PMID: 32378185 DOI: 10.1111/ajo.13170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/04/2020] [Indexed: 11/30/2022]
Abstract
AIM To determine if a policy recommending administration of terbutaline prior to emergency caesarean section improved arterial umbilical cord pH. MATERIALS AND METHODS This was a prospective audit between February 2018 and June 2019 among women who underwent a category one or two caesarean section. Neonatal cord gas results and perinatal outcomes were compared before and after the introduction of a policy recommending subcutaneous terbutaline prior to emergency caesarean section. RESULTS Among 423 women in the pre-policy change cohort and 253 post-policy change, there was no difference in arterial cord pH (median pH = 7.24 before the policy and median pH = 7.24 after the policy was introduced, P = 0.88). There was no statistically significant difference in any perinatal outcome, apart from the median arterial cord lactate which was higher in the post-treatment group (4.2 mmol/L vs 3.9 mmol/L, P = 0.006). Maternal heart rate was higher (median 110 vs 95, P < 0.0001) in the post-treatment group. Breastfeeding was more common in the post-treatment group (99% vs 95%, P = 0.005). There was no difference in estimated blood loss or rate of post-partum haemorrhage. A post hoc analysis according to treatment received, limited to caesarean section when the indication was suspected fetal compromise, demonstrated that among women who received terbutaline the rate of low pH (<7.1) was 3.8% (5/130) when terbutaline was given, compared with 6.6% (18/272) when terbutaline was not given (χ2 1 = 1.3, P = 0.26). CONCLUSION Changing our labour ward policy to recommending terbutaline prior to all category one and category two caesarean sections did not change arterial cord pH.
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Affiliation(s)
- Victoria A Buckley
- Obstetrics and Gynaecology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Joyce Wu
- Obstetrics and Gynaecology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Bradley De Vries
- Obstetrics and Gynaecology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.,School of Public Health, University of Sydney, Sydney, New South Wales, Australia
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16
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Salvanos JB. Should we act on a high umbilical cord lactate in an otherwise healthy neonate? Arch Dis Child 2020; 105:200-202. [PMID: 31533914 DOI: 10.1136/archdischild-2019-317901] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/06/2019] [Accepted: 09/06/2019] [Indexed: 11/04/2022]
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17
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Wang T, Yao W, Xia J, Li J, Shao Y, Huang F. Dietary supplementation with garcinol during late gestation and lactation facilitates acid-base balance and improves the performance of sows and newborn piglets1. J Anim Sci 2020; 97:4557-4566. [PMID: 31504564 DOI: 10.1093/jas/skz292] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 08/31/2019] [Indexed: 12/31/2022] Open
Abstract
The present study was conducted to evaluate the effects of dietary garcinol supplementation during late gestation (from the 90th day of pregnancy; day 90) and lactation on the acid-base balance of the umbilical cord blood and performance of sows and piglets. Sixty sows (Duroc × Yorkshire × Landrace; second- or third-parity; n = 20) were randomly divided into 3 gestation (day 90 of pregnancy) or lactation treatments, control diet (CON; basal diet), basal diet with 200 mg garcinol, and basal diet with 600 mg garcinol per kg of feed. The body weight (BW); backfat thickness and litter size of the sows; and birth weight, weaning weight, and mortality of piglets were recorded. Sows' blood and piglets' umbilical cord blood were collected for the measurements of hematological parameters and antioxidative and immune indexes, and acid-base balance parameters, respectively. The colostrum and milk and fecal samples of the sows were also collected for analysis of milk composition and apparent total tract nutrient digestibility. Garcinol had no effect on the BW and backfat thickness of the sows but significantly increased the birth weight and weaning weight of piglets (P < 0.05) and decreased the mortality (P < 0.05). Moreover, the white blood cell counts and neutrophil count, mean cell hemoglobin, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) activity in the plasma of the sows were increased more significantly (P < 0.05) in the garcinol groups than that in the CON group, whereas the malondialdehyde (MDA) content was decreased (P < 0.05). The garcinol treatment significantly increased the pH, HCO3- and base excess values (P < 0.05), whereas it decreased the pCO2 and lactate content (P < 0.05) in the umbilical blood. Dry matter (DM), ash, and ether extract in the colostrum were similar between groups (P > 0.05), whereas the garcinol significantly increased the crude protein (CP) in the milk. In addition, the content of immunoglobulin A (IgA) and immunoglobulin G (IgG) in the plasma of piglets and in colostrum and milk of sows were increased more significantly (P < 0.05) in the garcinol groups than that in the CON group. The apparent total tract nutrient digestibility was similar between treatments. Collectively, this study indicates that sows fed with garcinol in late gestation and lactation showed improved maternal health and antioxidative status, milk protein content, acid-base balance in the umbilical cord blood, and growth performance in piglets, showing promise in natural plant extract nutrition for sows.
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Affiliation(s)
- Tongxin Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Weilei Yao
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jun Xia
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Juan Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yafei Shao
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
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18
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Clinical Performance and Utility of Point-of-Care Lactate Technology in Patient Care Pathways. ACTA ACUST UNITED AC 2019. [DOI: 10.1097/poc.0000000000000185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Murray DM. Biomarkers in neonatal hypoxic-ischemic encephalopathy-Review of the literature to date and future directions for research. HANDBOOK OF CLINICAL NEUROLOGY 2019; 162:281-293. [PMID: 31324315 DOI: 10.1016/b978-0-444-64029-1.00013-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The widespread introduction of therapeutic hypothermia as a standard of care in hypoxic-ischemic encephalopathy (HIE) has brought increasing pressure on clinicians to make an early and accurate assessment of the degree of hypoxic injury (HI) that has occurred and the severity of the encephalopathy that will ensue. No single blood-based marker is currently robust enough to detect significant HI or predict outcome. However, research in the field has been active in the last 10 years and we know that HIE is associated with predictable alterations in the expression of a number of inflammatory proteins, neuron-specific proteins, metabolite pathways, and microRNA. These alterations evolve quickly over the first hours and days of life. Predictive power varies depending on the timing of measurement of the biomarker, the sample type, and the case mix of the cohort examined. Combining clinical data with biochemical measurements is currently the most likely path toward improved detection and prediction of outcome in neonatal HIE.
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Affiliation(s)
- Deirdre M Murray
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.
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20
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de Vries BS, Barratt A, McGeechan K, Tooher J, Wong E, Phipps H, Gordon A, Hyett JA. Outcomes of induction of labour in nulliparous women at 38 to 39 weeks pregnancy by clinical indication: An observational study. Aust N Z J Obstet Gynaecol 2018; 59:484-492. [PMID: 30588611 DOI: 10.1111/ajo.12930] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/17/2018] [Accepted: 10/29/2018] [Indexed: 01/14/2023]
Abstract
BACKGROUND Knowledge of the outcomes of induction of labour for different indications is sparse. AIMS To describe the mode of birth and other outcomes for nulliparous women induced at 38-39 weeks gestational age by indication for induction of labour. MATERIAL AND METHODS This was a retrospective observational study in a tertiary referral hospital, and a metropolitan teaching hospital in Sydney. The study population was nulliparous women with induction of labour at 38 or 39 completed weeks of pregnancy and a singleton, cephalic presenting baby planning a vaginal birth, from 2009 to 2016. The indication for induction of labour was classified into 12 groups. Mode of birth and other maternal and perinatal outcomes were described in each group, for women who spontaneously laboured at 38 or 39 weeks, and for women who gave birth from 40 completed weeks onward. The main outcome measure was mode of birth. RESULTS There were 3330 women with induction of labour at 38 or 39 weeks gestation. Rates of vaginal birth varied widely, ranging from 54% when the indication for induction was suspected large fetus, to 82% when the indication was suspected fetal compromise, and was 74% overall. Indications for caesarean delivery also varied by indication for induction. Among women giving birth ≥40 weeks gestational age, 75% had a vaginal birth. CONCLUSIONS In nulliparous women, rates of vaginal birth following induction of labour at 38 or 39 weeks gestation vary widely according to the indication for induction. These data are useful for antenatal counselling.
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Affiliation(s)
- Bradley Stephen de Vries
- Faculty of Medicine and Health, The University of Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia.,RPA Women and Babies, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Alexandra Barratt
- Wiser Health Care, School of Public Health, University of Sydney, Sydney, New South Wales, Australia
| | - Kevin McGeechan
- Faculty of Medicine and Health, The University of Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
| | - Jane Tooher
- RPA Women and Babies, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Ebony Wong
- RPA Women and Babies, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Hala Phipps
- Sydney Local Area Health District, Sydney, New South Wales, Australia.,Discipline of Obstetrics, Gynaecology and Neonatology, University of Sydney, Sydney, New South Wales, Australia
| | - Adrienne Gordon
- Discipline of Obstetrics, Gynaecology and Neonatology, University of Sydney, Sydney, New South Wales, Australia.,Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
| | - Jon Anthony Hyett
- RPA Women and Babies, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.,Central Clinical School, Discipline of Obstetrics, Gynaecology and Neonatology, University of Sydney, Sydney, New South Wales, Australia
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21
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Caseiro AR, Ivanova G, Pedrosa SS, Branquinho MV, Georgieva P, Barbosa PP, Santos JD, Magalhães R, Teixeira P, Pereira T, Maurício AC. Human umbilical cord blood plasma as an alternative to animal sera for mesenchymal stromal cells in vitro expansion - A multicomponent metabolomic analysis. PLoS One 2018; 13:e0203936. [PMID: 30304014 PMCID: PMC6179201 DOI: 10.1371/journal.pone.0203936] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 08/30/2018] [Indexed: 12/26/2022] Open
Abstract
Mesenchymal Stromal cells (MSCs) have a potential role in cell-based therapies. Foetal bovine serum (FBS) is used to supplement the basal cell culture medium but presents several disadvantages and risks. Other alternatives have been studied, including human umbilical cord blood plasma (hUCBP), aiming at the development of xeno-free culturing protocols. A comparative characterization of multicomponent metabolic composition of hUCBP and commercial FBS based on Nuclear Magnetic Resonance (NMR) spectroscopy and multivariate statistical analysis was performed. The analysis of 1H-NMR spectra revealed both similarities and differences between the two proposed supplements. Similar metabolites (amino acids, glucose, lipids and nucleotides) were found in the hUCBP and FBS NMR spectra. The results show that the major difference between the metabolic profiles of the two proposed supplements are due to the significantly higher levels of glucose and lower levels of lactate, glutamate, alanine and branched chain amino acids in hUCBP. Similar or slightly different levels of important proteinogenic amino acids, as well as of nucleotides, lipids were found in the hUCBP and FBS. In order to validate it’s suitability for cell culture, umbilical cord-MSCs (UC-MSCs) and dental pulp stem cells (DPSCs) were expanded using hUCBP. In both hMSCs, in vitro culture with hUCBP supplementation presented similar to improved metabolic performances when compared to FBS. The two cell types tested expressed different optimum hUCBP percentage content. For DPSCs, the optimum hUCBP content was 6% and for UC-MSCs, 4%. Cultured hMSCs displayed no changes in senescence indicators, as well as maintained characteristic surface marker’s expression. FBS substitution was associated with an increase in early apoptosis events, in a dose dependent manner, as well as to slight up- and down-regulation of targeted gene’s expression. Tri-lineage differentiation capacity was also influenced by the substitution of FBS by hUCBP.
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Affiliation(s)
- A. R. Caseiro
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, n° 228, Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, Portugal
- REQUIMTE/LAQV–U. Porto–Porto/Portugal, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, Porto, Portugal
| | - G. Ivanova
- REQUIMTE- LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Porto, Portugal
| | - S. S. Pedrosa
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, n° 228, Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, Portugal
| | - M. V. Branquinho
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, n° 228, Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, Portugal
| | - P. Georgieva
- Department of Electronics Telecommunications and Informatics, IEETA, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - P. P. Barbosa
- Biosckin, Molecular and Cell Therapies S.A., Laboratório Criovida, TecMaia, Rua Engenheiro Frederico Ulrich 2650, Moreira da Maia, Portugal
| | - J. D. Santos
- REQUIMTE/LAQV–U. Porto–Porto/Portugal, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, Porto, Portugal
| | - R. Magalhães
- Universidade Católica Portuguesa, CBQF—Centro de Biotecnologia e Química Fina–Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, Porto, Portugal
| | - P. Teixeira
- Universidade Católica Portuguesa, CBQF—Centro de Biotecnologia e Química Fina–Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, Porto, Portugal
| | - T. Pereira
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, n° 228, Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, Portugal
| | - A. C. Maurício
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, n° 228, Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente da Universidade do Porto (ICETA), Rua D. Manuel II, Apartado 55142, Porto, Portugal
- * E-mail: ,
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Raghuraman N, Wan L, Temming LA, Woolfolk C, Macones GA, Tuuli MG, Cahill AG. Effect of Oxygen vs Room Air on Intrauterine Fetal Resuscitation: A Randomized Noninferiority Clinical Trial. JAMA Pediatr 2018; 172:818-823. [PMID: 30039159 PMCID: PMC6143068 DOI: 10.1001/jamapediatrics.2018.1208] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Two-thirds of women in labor receive supplemental oxygen to reverse perceived fetal hypoxemia and prevent acidemia. Oxygen is routinely administered for category II fetal heart tracings, a class of fetal tracing used to designate intermediate risk for acidemia. This liberal use of oxygen may not be beneficial, particularly because neonatal hyperoxygenation is harmful. OBJECTIVE To test the hypothesis that room air is noninferior to oxygen in improving fetal metabolic status among patients with category II fetal heart tracings. DESIGN, SETTING, AND PARTICIPANTS This was a randomized, unblinded noninferiority clinical trial conducted between June 2016 and July 2017 in the labor and delivery ward of a single tertiary care center. Women with singleton pregnancies at 37 weeks' gestational age or more who were admitted for delivery were eligible. Of those who met inclusion criteria, the patients who developed category II tracings in labor that necessitated intrauterine resuscitation were randomized in a 1:1 ratio to room air or oxygen. Analyses were intention-to-treat. INTERVENTIONS The oxygen group received 10 L of oxygen per minute by nonrebreather facemask until delivery. The room air group was exposed to room air only without a facemask. MAIN OUTCOMES AND MEASURES The primary outcome was umbilical artery lactate, a marker of metabolic acidosis and neonatal morbidity. Noninferiority was defined as a mean difference between groups of less than 9.0 mg/dL (1.0 mmol/L). Secondary outcomes were other umbilical artery gases, cesarean delivery for nonreassuring fetal status, and operative vaginal delivery. RESULTS Of the 705 patients who met inclusion criteria, 277 (39.3%) were enrolled on admission. During labor, 114 patients (41.2% of the enrolled patients) developed category II tracings and were randomized to room air (57 patients; 50.0% of the randomized patients) or oxygen (57 patients; 50.0% of the randomized patients). A total of 99 patients (86.8% of the randomized patients) with paired cord gases were included in the modified intention-to-treat analysis. The 99 patients included 76 African American women (77%); mean (SD) age was 27.3 (6.3) years in the oxygen group and 27.8 (5.3) years in the room air group. There was no difference in umbilical artery lactate between the group on oxygen and the group on room air (mean, 30.6 mg/dL [95% CI, 27.0 to 34.2 mg/dL] vs 31.5 mg/dL [95% CI, 27.9 to 36.0 mg/dL]); P = .69). The mean difference in lactate was 0.9 mg/dL (95% CI, -4.5 to 6.3 mg/dL), which was within the noninferiority margin. There was no difference in other umbilical artery gas components or mode of delivery between groups. CONCLUSIONS AND RELEVANCE Among patients with category II fetal heart tracings, intrauterine resuscitation with room air is noninferior to oxygen in improving umbilical artery lactate. The results of this trial challenge the efficacy of a ubiquitous obstetric practice and suggest that room air may be an acceptable alternative. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02741284.
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Affiliation(s)
- Nandini Raghuraman
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Leping Wan
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Lorene A. Temming
- Department of Obstetrics and Gynecology, Carolinas Medical Center, Charlotte, North Carolina
| | - Candice Woolfolk
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - George A. Macones
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Methodius G. Tuuli
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Alison G. Cahill
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, St Louis, Missouri
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Einikyte R, Snieckuviene V, Ramasauskaite D, Panaviene J, Paliulyte V, Opolskiene G, Kazenaite E. The comparison of umbilical cord arterial blood lactate and pH values for predicting short-term neonatal outcomes. Taiwan J Obstet Gynecol 2018; 56:745-749. [PMID: 29241913 DOI: 10.1016/j.tjog.2017.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2017] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE Current clinical practice of assessing neonatal condition is based on evaluation of umbilical cord arterial blood pH value rather than lactate. However, evidence shows that lactate is direct and more predictive measurement than pH or at least of equal importance. This study is to assess and compare umbilical cord arterial lactate and pH values for predicting short-term neonatal outcomes. MATERIALS AND METHODS A retrospective cohort study was conducted at the tertiary level hospital, were arterial umbilical cord blood sampling was collected according to the standard procedures. Neonatal morbidity was registered if at least one of the following conditions was noted: Apgar score at 1 min after delivery was 6 or lower, resuscitation performed, including assisted ventilation and requirement of admission to neonatal intensive care unit. Mothers-newborns pairs were allocated into two groups: newborns exposed to perinatal hypoxia (group 1) and observed as healthy newborns (group 2). Receiver operating characteristics curves (ROC) were generated to assess the predictive ability of pH and lactate for the short-term neonatal outcomes. RESULTS 901 neonates born at ≥37 weeks of gestation were included. Newborns exposed to perinatal hypoxia (group 1) encompassed 39 (4.3%) patients, and observed as healthy (group 2) - 862 (95.7%). Arterial umbilical cord blood pH in group 1 was 7.160 ± 0.126 as compared to 7.314 ± 0.083 in group 2; p < 0.001. Mean arterial lactate was significantly higher in group 1 than group 2 (6.423 ± 2.335 as compared to 3.600 ± 1.833; p < 0.001). The difference between areas under ROC curves representing pH and lactate was not significant (0.848 and 0.831 respectively; p = 0.6132). CONCLUSION Umbilical cord arterial lactate and pH predicted short-term neonatal outcomes with similar efficacies.
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Affiliation(s)
- Ruta Einikyte
- Vilnius University, Faculty of Medicine, Vilnius 08661, Lithuania
| | - Vilija Snieckuviene
- Vilnius University, Faculty of Medicine, Clinic of Obstetrics and Gynecology, Vilnius 08661, Lithuania
| | - Diana Ramasauskaite
- Vilnius University, Faculty of Medicine, Clinic of Obstetrics and Gynecology, Vilnius 08661, Lithuania.
| | | | - Virginija Paliulyte
- Vilnius University, Faculty of Medicine, Clinic of Obstetrics and Gynecology, Vilnius 08661, Lithuania
| | - Gina Opolskiene
- Vilnius University, Faculty of Medicine, Clinic of Obstetrics and Gynecology, Vilnius 08661, Lithuania
| | - Edita Kazenaite
- Vilnius University, Faculty of Medicine, Centre of Hepatology, Gastroenterology and Dietetics, Vilnius 08661, Lithuania; Vilnius University Hospital Santara Clinics, Vilnius 08661, Lithuania
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Jeawon SS, Katz LM, Galvin NP, Fogarty UM, Duggan VE. Determination of reference intervals for umbilical cord arterial and venous blood gas analysis of healthy Thoroughbred foals. Theriogenology 2018; 118:1-6. [PMID: 29859395 DOI: 10.1016/j.theriogenology.2018.05.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/18/2018] [Accepted: 05/21/2018] [Indexed: 02/08/2023]
Abstract
Although umbilical cord blood gas analysis is considered the best way to assess in utero oxygenation in human neonates, there is limited evaluation of this method in equine neonatology. Our objectives were to assess the practicality of obtaining umbilical cord blood gas samples in the field and to determine umbilical cord arterial and venous blood gas reference intervals (RI) for healthy, newborn foals. Thoroughbred foals >320 days gestation from healthy mares with uneventful pregnancies at one stud farm were evaluated. All parturitions were observed, with paired umbilical arterial and venous whole-blood samples obtained immediately following parturition for blood gas and lactate concentrations measured in duplicate. Apgar scores were assigned immediately and 10 min after birth, with all foals subsequently examined on days 1-28 to monitor for development of perinatal asphyxia syndrome. Foals were excluded from analysis based on abnormalities of stage 2 labour, Apgar scores and gross and histological placental assessment. Data was analysed using a Student's t-test, Pearson's correlation and the Robust method with P ≤ 0.05 significant. Umbilical cord samples were simple to obtain with minimal disruption to the foaling environment. Of the n = 34 foals assessed, n = 7 were excluded based on premature placental separation deliveries. The mean time for stage 2 labour and blood gas analysis after parturition was 17.3 ± 5.1 min and 5.0 ± 2.3 min, respectively. RI were identified for umbilical arterial and venous pH (7.19-7.42 vs. 7.34-7.44), PO2 (15.5-48.39 mmHg vs. 16.6-52.7 mmHg), PCO2 (49.5-82.29 mmHg vs. 45.4-63.1 mmHg), SO2 (9.19-76.89% vs. 39.9-84.88%), bicarbonate (27.3-38.7 mmol/l vs. 27.7-37.8 mmol/l), base excess (0.36-12.9 mmol/l vs. 1.97-13.1 mmol/l), TCO2 (28.99-40.3 mmHg vs. 29.0-39.5 mmHg) and lactate (1.4-7.3 mmol/l vs. 1.3-4.9 mmol/l). Umbilical arterial samples had lower pH (P < 0.0001), PO2 (P = 0.002) and SO2 (P < 0.0001) and higher PCO2 (P < 0.0001) and lactate (P < 0.0001) than venous samples. The initial Apgar score was positively correlated to umbilical arterial SO2 (r = 0.4, P = 0.05) and negatively with umbilical arterial TCO2 (r = -0.6, P = 0.004). Overall, umbilical cord sampling was simple and minimally disruptive, with RI obtained for blood gas measurements. RI for umbilical blood gas measurements from a larger population of healthy and unhealthy foals is required to evaluate the accuracy of this method for assessing in utero oxygenation.
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Affiliation(s)
- Sunita S Jeawon
- UCD School of Veterinary Medicine, Veterinary Sciences Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Lisa M Katz
- UCD School of Veterinary Medicine, Veterinary Sciences Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | | | | | - Vivienne E Duggan
- UCD School of Veterinary Medicine, Veterinary Sciences Centre, University College Dublin, Belfield, Dublin 4, Ireland.
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Evidence of lower oxygen reserves during labour in the growth restricted human foetus: a retrospective study. BMC Pregnancy Childbirth 2017; 17:209. [PMID: 28668074 PMCID: PMC5494130 DOI: 10.1186/s12884-017-1392-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 06/22/2017] [Indexed: 11/16/2022] Open
Abstract
Background The aim of the present study is to test the hypothesis that Growth Restricted foetuses (FGR) have the tendency to develop more pathological cardiotocograpic tracings during labour than do appropriate for gestational age foetuses and that there is a shorter time lapse from the beginning of labour and the advent of a pathological cardiotocograpic tracing. Methods The study was carried out at the Maternal-Foetal Medicine Unit of the Sant’Anna University Hospital, Turin, Italy. A total of 930 foetuses born at term between January and December 2012 were analysed: 355 small for gestational age (SGA) comprising both constitutional small for gestational age and growth restricted foetuses (cases group) and 575 Appropriate for Gestational Age (AGA) foetuses (control group). Tracings were evaluated independently by two obstetric consultants, according to the International Federation of Gynaecology and Obstetrics (FIGO) classification. The main outcomes considered were the incidence of pathological cardiotocograpic tracings and the time interval between the beginning of labour and the advent of pathological cardiotocograpic tracing. The Student’s t-test, chi-square test and ANOVA were used for comparisons between cases and controls and amongst groups. Significance was set at <0.05. Univariate and multivariate odds-ratios were calculated. Results Foetuses with birthweight <3rd centile (growth restricted foetuses) more frequently presented pathological cardiotocograpic tracings in labour than did controls (43.8% vs. 21.6%; p < 0.001). Pathological cardiotocograpic tracing developed faster in the foetuses with birthweight <3rd centile group (53′, 0′-277′) than it did in the control group (170.5′, 0′-550′; p < 0.05). A higher induction rate was observed in the cases (29.6%) than in the control group (17%), with statistical significance p < 0.001. To correct for this possible confounding factor a multivariate logistic regression analysis was performed. It confirmed a statistically significant increased risk of pathological cardiotocographic tracings in the FGR group (OR 1.63; CI 1.30–2.05). Conclusion The results confirm the hypothesis that Growth Restricted foetuses (FGR) have fewer oxygen reserves to deal with labour. Our results underscore the importance of the prenatal detection of these foetuses and of their continuous cardiotocographic monitoring during labour. Electronic supplementary material The online version of this article (doi:10.1186/s12884-017-1392-7) contains supplementary material, which is available to authorized users.
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Cahill AG, Macones GA, Smyser CD, López JD, Inder TE, Mathur AM. Umbilical Artery Lactate Correlates with Brain Lactate in Term Infants. Am J Perinatol 2017; 34:535-540. [PMID: 27788532 PMCID: PMC5530875 DOI: 10.1055/s-0036-1593844] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Objective The objective of this study was to determine the correlation between umbilical artery lactate with brain lactate in nonanomalous term infants. Study Design We performed a nested case-control study within an on-going prospective cohort of more than 8,000 consecutive singleton term (≥ 37 weeks) nonanomalous infants. Neonates underwent cerebral magnetic resonance imaging (MRI) within the first 72 hours of life. Cases (umbilical artery pH ≤ 7.10) were gender and race matched 1:3 to controls (umbilical artery pH > 7.20). Single voxel magnetic resonance spectroscopy (MRS), lactate, and N-acetyl aspartate (NAA) for normalization were calculated using Siemens software (Plano, TX). Linear regression estimated the association between incremental change in umbilical artery lactate and brain lactate, both directly and as a ratio with NAA. Results Of 175 infants who underwent MRI with spectral sequencing, 52 infants had detectable brain lactate. The 52 infants with brain lactate peaks had umbilical artery lactate values of 1.6 to 11.4 mmol/L. For every 1.0 mmol/L increase in umbilical artery lactate, there was an increase in brain lactate of 0.02, which remained significant even when corrected for NAA. Conclusion MRS measured brain lactate is significantly correlated with umbilical artery lactate in nonanomalous term infants, which may help explain the observed association between umbilical artery lactate and neurologic morbidity.
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Affiliation(s)
- Alison G. Cahill
- Department of Obstetrics and Gynecology, Washington University in St. Louis, St. Louis, Missouri
| | - George A. Macones
- Department of Obstetrics and Gynecology, Washington University in St. Louis, St. Louis, Missouri
| | - Christopher D. Smyser
- Division of Neurology, Department of Pediatrics, Washington University in St. Louis, St. Louis, Missouri
| | - Julia D. López
- Department of Obstetrics and Gynecology, Washington University in St. Louis, St. Louis, Missouri
| | - Terrie E. Inder
- Department of Pediatric Newborn Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Amit M. Mathur
- Department of Pediatrics, Washington University in St. Louis, St. Louis, Missouri
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Allanson ER, Pattinson RC, Nathan EA, Dickinson JE. The introduction of umbilical cord lactate measurement and associated neonatal outcomes in a South African tertiary hospital labor ward. J Matern Fetal Neonatal Med 2017; 31:1272-1278. [DOI: 10.1080/14767058.2017.1315094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- E. R. Allanson
- Faculty of Medicine, Dentistry, and Health Sciences, School of Women's and Infants' Health, University of Western Australia, Crawley, Australia
- SAMRC Maternal and Infant Health Care Strategies Unit, Department of Obstetrics and Gynaecology, University of Pretoria, Pretoria, South Africa
| | - R. C. Pattinson
- SAMRC Maternal and Infant Health Care Strategies Unit, Department of Obstetrics and Gynaecology, University of Pretoria, Pretoria, South Africa
| | - E. A. Nathan
- Faculty of Medicine, Dentistry, and Health Sciences, School of Women's and Infants' Health, University of Western Australia, Crawley, Australia
| | - J. E. Dickinson
- Faculty of Medicine, Dentistry, and Health Sciences, School of Women's and Infants' Health, University of Western Australia, Crawley, Australia
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Allanson ER, Waqar T, White C, Tunçalp Ö, Dickinson JE. Umbilical lactate as a measure of acidosis and predictor of neonatal risk: a systematic review. BJOG 2017; 124:584-594. [PMID: 27704703 DOI: 10.1111/1471-0528.14306] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2016] [Indexed: 12/27/2022]
Abstract
BACKGROUND Umbilical cord lactate is one approach to measuring acidosis and intrapartum hypoxia, knowledge of which may be helpful for clinicians involved in the care of women and newborns. OBJECTIVE To synthesise the evidence on accuracy of umbilical cord lactate in measuring acidosis and predicting poor neonatal outcome. SEARCH STRATEGY Studies published and unpublished between 1990 and 2014 from PubMed/Medline, EMBASE, Cochrane Central Register of Controlled Trials, and clinicaltrials.gov were assessed. SELECTION CRITERIA Cross-sectional and randomised studies that assessed fetal acidosis (using lactate as the index test) with or without an assessment of neonatal outcome. DATA COLLECTION AND ANALYSIS Correlations between index and reference test(s) were recorded, as were the raw data to classify the predictive ability of umbilical lactate for neonatal outcomes. Meta-analysis of correlation was performed. We plotted estimates of the studies' observed sensitivities and specificities on Forest plots with 95% confidence intervals (CI). Where possible, we combined data using meta-analysis, applying the hierarchical summary receiver operating characteristics model and a bivariate model. MAIN RESULTS Twelve studies were included. Umbilical lactate correlated with pH [pooled effect size (ES) -0.650; 95% CI -0.663 to -0.637, P < 0.001], base excess (ES -0.710; 95% CI -0.721 to -0.699, P < 0.001), and Apgar scores at 5 minutes (ES 0.300; 95% 0.193-0.407, P < 0.001). Umbilical lactate had pooled sensitivity and specificity for predicting neonatal neurological outcome including hypoxic ischaemic encephalopathy of 69.7% (95% CI 23.8-94.4%) and 93% (95% CI 86.8-96.3%). AUTHORS' CONCLUSION Umbilical cord lactate is a clinically applicable, inexpensive and effective way to measure acidosis and is a tool that may be used in the assessment of neonatal outcome. TWEETABLE ABSTRACT Umbilical cord lactate: a clinically applicable, inexpensive, effective way to measure intrapartum acidosis.
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Affiliation(s)
- E R Allanson
- School of Women's and Infants' Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, Crawley, WA, Australia
- Department of Reproductive Health and Research including UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), World Health Organization, Geneva, Switzerland
| | - T Waqar
- CMH Medical College, CMH Lahore, Lahore, Pakistan
| | - Crh White
- School of Women's and Infants' Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Ö Tunçalp
- Department of Reproductive Health and Research including UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), World Health Organization, Geneva, Switzerland
| | - J E Dickinson
- School of Women's and Infants' Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, Crawley, WA, Australia
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Martí Gamboa S, Pascual Mancho J, Rodrigo Rodríguez M, Ruiz Sada J, Castán Mateo S. pH, base deficit or lactate. Which is better for predicting neonatal morbidity? J Matern Fetal Neonatal Med 2016; 30:2367-2371. [DOI: 10.1080/14767058.2016.1248936] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Sabina Martí Gamboa
- Department of Obstetrics, Miguel Servet University Hospital, Zaragoza, Spain
| | - Jara Pascual Mancho
- Department of Obstetrics, Miguel Servet University Hospital, Zaragoza, Spain
| | | | - Julia Ruiz Sada
- Department of Obstetrics, Miguel Servet University Hospital, Zaragoza, Spain
| | - Sergio Castán Mateo
- Department of Obstetrics, Miguel Servet University Hospital, Zaragoza, Spain
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Umbilical cord arterial lactate compared with pH for predicting neonatal morbidity at term. Obstet Gynecol 2015; 124:756-761. [PMID: 25198278 DOI: 10.1097/aog.0000000000000466] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To test the hypothesis that umbilical cord arterial lactate is superior to pH for predicting short-term neonatal morbidity at term. METHODS We conducted a prospective cohort study of all consecutive, non-anomalous, singleton, vertex, term births from 2009 to 2012 at Washington University Medical Center. Umbilical arterial lactate and pH were measured immediately after delivery, before knowledge of neonatal outcomes. The primary outcome was a composite neonatal morbidity consisting of neonatal death, intubation, mechanical ventilation, meconium aspiration syndrome, hypoxic encephalopathy, and need for hypothermic therapy. The predictive ability of lactate and pH were compared using receiver operating characteristic curves. Optimal cutoff values of lactate and pH were estimated based on the maximal Youden index. RESULTS Of 4,997 term deliveries during the study period, 4,910 met inclusion criteria. The composite neonatal morbidity occurred in 56 neonates (1.1%). The mean lactate level was nearly twofold higher in neonates with the composite morbidity (6.49 compared with 3.26 mmol/L, P<.001), whereas mean pH values were less distinct (7.19 compared with 7.29, P<.001). Lactate was significantly more predictive of neonatal morbidity than pH (receiver operating characteristic curve area: 0.84 compared with 0.78, P=.03). The optimal cutoff value for predicting neonatal morbidity was 3.90 mmol/L for lactate and 7.25 for pH. Corresponding sensitivities and specificities were also higher for lactate (83.9% and 74.1% compared with 75.0% and 70.6%, respectively). CONCLUSION Results of this large prospective cohort study show that umbilical cord arterial lactate is a more discriminating measure of neonatal morbidity at term than pH. LEVEL OF EVIDENCE : II.
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Labrecque L, Provençal M, Caqueret A, Wo BL, Bujold E, Larivière F, Bédard MJ. Correlation of cord blood pH, base excess, and lactate concentration measured with a portable device for identifying fetal acidosis. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2015; 36:598-604. [PMID: 25184978 DOI: 10.1016/s1701-2163(15)30539-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To determine the effectiveness of portable lactate analyzers in identifying fetal acidosis by correlating arterial and venous lactate values from umbilical cord blood with lactate, pH, and base excess measurements from central laboratory analyzers. METHODS We performed a prospective study using arterial and venous cord blood from 52 women with a singleton fetus delivered at term. We evaluated the correlation between the cord blood lactate concentration measured using two of the same portable devices (Lactate Plus, Nova Biomedical) with the result from a central laboratory analyzer. Analyses of the correlation between arterial lactate concentration measured on the portable device with arterial pH and base excess were then performed. RESULTS We observed a median arterial pH of 7.24 (range 7.05 to 7.35) and a median arterial lactate concentration of 3.7 mmol/L (range 1.7 to 8.8 mmol/L). An excellent correlation was observed between lactate concentrations measured by the two portable devices (arterial R² = 0.98 and venous R² = 0.98), and between the portable device and the central laboratory analyzer (arterial R² = 0.94 and venous R² = 0.95). In our population, the optimal cut-offs to predict a pH < 7.20 or a base excess > -8.0 mmol/L were a lactate concentration of 4.9 mmol/L and 5.3 mmol/L, respectively, according to receiver operator characteristic analysis. With a lactate concentration > 4.9 mmol/L, the portable device had a sensitivity of 82% and a specificity of 90% to identify samples with an arterial pH < 7.20. CONCLUSION Cord blood lactate concentration measured with a portable device is a good predictor of cord blood base excess and pH. Future studies should be designed to correlate scalp blood lactate measurements with clinical outcomes.
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Affiliation(s)
- Lyne Labrecque
- Department of Biochemistry, Centre hospitalier de l'Université de Montréal, Montreal QC
| | - Mathieu Provençal
- Department of Biochemistry, Centre hospitalier de l'Université de Montréal, Montreal QC
| | - Aurore Caqueret
- Department of Biochemistry, Centre hospitalier de l'Université de Montréal, Montreal QC
| | - Bi Lan Wo
- Department of Obstetrics and Gynecology, Centre hospitalier de l'Université de Montréal, Montreal QC
| | - Emmanuel Bujold
- Department of Obstetrics and Gynecology, Faculty of Medicine, Université Laval, Quebec QC
| | - François Larivière
- Department of Biochemistry, Centre hospitalier de l'Université de Montréal, Montreal QC
| | - Marie-Josée Bédard
- Department of Obstetrics and Gynecology, Centre hospitalier de l'Université de Montréal, Montreal QC
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Wiklund I, Ahlberg M, Dahlström A, Weichselbraun M, Sjörs G. Routine testing of umbilical cord blood after normal delivery should be discontinued. SEXUAL & REPRODUCTIVE HEALTHCARE 2014; 5:165-6. [DOI: 10.1016/j.srhc.2014.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 10/06/2014] [Accepted: 10/09/2014] [Indexed: 10/24/2022]
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Blood lactate level and meconium aspiration syndrome. Arch Gynecol Obstet 2014; 291:849-53. [PMID: 25256123 DOI: 10.1007/s00404-014-3482-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 09/16/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE Approximately 5% of infants born with a meconium-stained amniotic fluid (MSAF) develop meconium aspiration syndrome (MAS). Early recognition of infants at highest risk for the development of MAS and the prediction of disease severity are important for optimizing the clinical strategies for prevention and treatment. The aim of the present study was to identify the risk factors for MAS and to investigate the effect of blood lactate level on the development of MAS. METHODS Between January 2011 and January 2012, data were recorded with regard to gender, mode of delivery, gestational week, birth weight, 5-min Apgar score, and need for resuscitation of the meconium-stained depressed infants who underwent tracheal aspiration. Moreover, the number of cases developing MAS, blood pH value, and lactate level in capillary blood gases obtained during the first hour after delivery, duration of oxygen supplementation, the number of cases receiving mechanical ventilation and surfactant therapy, duration of hospital stay, and outcomes of the infants were recorded. RESULTS The number of live births during the study period was 17,202, and of them, 1,341 (7.8%) infants were born through MSAF. Of 195 infants who were meconium-stained depressed, 90 were girls and 105 were boys. Their mean gestational week was 39.37 ± 0.89 weeks and mean birth weight was 3,426 ± 634 g. Eighty-four of them were born through cesarean section (C/S), and 111 were born via normal spontaneous labor. For 40 infants, Apgar score at fifth minute was less than 6. In total, resuscitation was performed on 43 (22.9%) infants. Of the infants, 141 did not develop MAS and 54 developed MAS. While there were no significant differences between infants with and without MAS with regard to gender, delivery route, gestational week, and birth weight, a significant difference was observed regarding the Apgar score (p = 0.0001). The blood pH value in capillary blood gas analysis was less than 7.25 in 18 (28.5%) cases with MAS and four (3.2%) cases without MAS. There was no significant difference between infants with and without MAS with regard to blood pH levels (p = 0.031). The mean blood lactate level was 8.5± 3.4 mmol/L in the patients with MAS, and there was a significant difference between infants with and without MAS regarding blood lactate level (p = 0.0001). The mean duration of oxygen supplementation was 86.62 ± 66.52 and 44.36 ± 19.03 h in patients with MAS and without MAS, respectively. In total, 30 infants required mechanical ventilation (24 infants with MAS and 6 infants without MAS). In addition to mechanical ventilation, 16 infants with MAS were administered surfactant therapy. The mean duration of hospital stay of infants with MAS was significantly higher than infants without MAS (p = 0.0001). There was a correlation between blood lactate levels, blood pH value, and hospitalization duration (p < 0.05). All of the infants, except one patient, were discharged from the NICU. CONCLUSION In addition to the blood pH value and 5-min Apgar score, increased blood lactate level may be a risk factor for the development of MAS in infants born with MSAF. This may aid in the early detection of MAS and, with appropriate measures taken sooner, reduce morbidity and mortality. Further studies are needed to elucidate the role of lactate level, which is an important indicator of hypoxia during the development of MAS.
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Jørgensen JS, Weber T. Fetal scalp blood sampling in labor - a review. Acta Obstet Gynecol Scand 2014; 93:548-55. [DOI: 10.1111/aogs.12421] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 05/05/2014] [Indexed: 12/01/2022]
Affiliation(s)
- Jan S. Jørgensen
- Department of Gynecology and Obstetrics; Odense University Hospital; University of Southern Denmark; Institute of Clinical Research; Perinatal Research Unit; Odense Denmark
| | - Tom Weber
- Department of Gynecology and Obstetrics; Hvidovre Hospital; University of Copenhagen; Hvidovre Denmark
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Orsonneau JL, Fraissinet F, Sébille-Rivain V, Dudouet D, Bigot-Corbel E. Suitability of POC lactate methods for fetal and perinatal lactate testing: considerations for accuracy, specificity and decision making criteria. Clin Chem Lab Med 2014; 51:397-404. [PMID: 23096019 DOI: 10.1515/cclm-2012-0201] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 06/27/2012] [Indexed: 11/15/2022]
Abstract
BACKGROUND Point of care (POC) testing for fetal scalp blood lactate is a more user friendly and more successful approach compared to scalp pH for intrapartum fetal monitoring. The aim of this study was to assess the analytical specificity and clinical reliability of three POC lactate methods. METHODS The analytical performance of three POC lactate methods was compared to Cobas 6000 (Roche Diagnostics) laboratory reference method: Lactate Pro from Arkray, GEM 4000 from Instrumentation Laboratory and StatStrip Lactate from Nova Biomedical. The clinical performance and influences on accuracy and decision making criteria for the three POC methods was assessed with umbilical cord samples and compared to the laboratory reference method. The influence of varying ranges of hemoglobin, pH and partial oxygen pressure (pO(2)) on the accuracy of results was assessed. RESULTS Although all three POC methods showed good correlation with the reference method for the umbilical cord sample population (r=0.989, 0.973 and 0.980, respectively), Lactate Pro and Gem 4000 showed a significant negative bias compared to the reference method. The degree of bias meant a significant readjustment of decision making criteria was required for fetal lactate use. The accuracy of the Lactate Pro results was affected by hemoglobin and to a lesser extent pH. CONCLUSIONS The three electrochemical POC devices can measure fetal lactate reliably. StatStrip Lactate showed a closer correlation and concordance to our laboratory reference method. The results of this study indicate the requirement for predetermining the reliability of POC lactate methods before use present in fetal and perinatal settings.
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Narang Y, Vaid NB, Jain S, Suneja A, Guleria K, Faridi MMA, Gupta B. Is nuchal cord justified as a cause of obstetrician anxiety? Arch Gynecol Obstet 2014; 289:795-801. [PMID: 24190695 DOI: 10.1007/s00404-013-3072-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Accepted: 10/24/2013] [Indexed: 02/08/2023]
Abstract
PURPOSE Birth asphyxia leading to acidosis comprises 20-60 % of perinatal mortality. Nuchal cord (NC) is one of the possible causes of birth asphyxia. Majority of fetuses who are antenatally detected to have nuchal cord are able to achieve successful vaginal birth. The purpose of this study was to analyze the effect of nuchal cord on fetal acid base status and perinatal outcome in vaginal deliveries. STUDY DESIGN 150 parturients were equally divided into three groups after vaginal delivery based on no NC, single and multiple loops. Umbilical cord arterial blood was analyzed for biochemical markers i.e. pH, PO2, SPO2, PCO2, HCO3 (-), standard base excess and lactate for acidosis. Labor complications like abnormal FHR, meconium-stained liquor, prolonged second stage, instrumental vaginal delivery, third stage complications were compared. In neonates, birth weight, Apgar score ≤7 at 5 min, NICU admission and other morbidity and mortality during hospital stay were compared among groups using suitable statistical tests. Above parameters were also compared between tight and loose loops. RESULT Nuchal cord groups had significantly higher frequency of labor complications than no NC group, especially tight loops. Neonates with NC had significantly higher frequency of meconium-stained liquor, Apgar score ≤7 at 5 min, deranged biochemical markers, NICU transfer. However, none of the neonate had pH in acidosis range and majority were discharged in healthy condition. CONCLUSION Patients with NC are likely to have uneventful labor and delivery as cord compression is transient and most fetuses are able to compensate for reduce umbilical blood flow. Routine antenatal ultrasound scan is not advisable, as mode of delivery and labor management does not change with detection of NC antenatally. Therefore, vaginal delivery with routine labor protocol can be allowed in cases of nuchal cord.
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Affiliation(s)
- Yum Narang
- Department of Obstetrics and Gynaecology, University College of Medical Sciences and GTB Hospital, Dilshad Garden, New Delhi, India
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White CR, Doherty DA, Newnham JP, Pennell CE. The impact of introducing universal umbilical cord blood gas analysis and lactate measurement at delivery. Aust N Z J Obstet Gynaecol 2013; 54:71-8. [DOI: 10.1111/ajo.12132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 08/09/2013] [Indexed: 10/26/2022]
Affiliation(s)
- Christopher R.H. White
- School of Women's and Infants’ Health; The University of Western Australia; Perth Western Australia Australia
| | - Dorota A. Doherty
- School of Women's and Infants’ Health; The University of Western Australia; Perth Western Australia Australia
- Women and Infants Research Foundation; Perth Western Australia Australia
| | - John P. Newnham
- School of Women's and Infants’ Health; The University of Western Australia; Perth Western Australia Australia
- Women and Infants Research Foundation; Perth Western Australia Australia
| | - Craig E. Pennell
- School of Women's and Infants’ Health; The University of Western Australia; Perth Western Australia Australia
- Women and Infants Research Foundation; Perth Western Australia Australia
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White CRH, Kohan R, Doherty DA, Newnham JP, Pennell CE. Attitudes and barriers to the introduction of umbilical cord blood gas and lactate analysis at birth. Aust N Z J Obstet Gynaecol 2013; 53:271-6. [PMID: 23452231 DOI: 10.1111/ajo.12058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Accepted: 01/02/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Despite a growing body of evidence demonstrating the value of universal umbilical cord blood gas analysis (UCBGA), there remains reluctance in some maternity units to adopt universal testing. AIMS Identify perceived barriers and benefits of universal UCBGA. METHODS Medical and midwifery staff involved in intrapartum care at four level two maternity units (one metropolitan and three regional) completed questionnaires evaluating attitudes to UCBGA. Questionnaires included 13 statements with responses ranging from strongly agree to strongly disagree and background demographic data. RESULTS Most respondents considered UCBGA beneficial to perinatal care (n = 72; 67.3%), with only nine individuals (8.4%) believing UCBGA had no place in perinatal care. The majority of respondents considered benefits of UCBGA to include being an effective and objective marker of neonatal status (n = 64; 59.8%), as well as playing a role in medicolegal issues (n = 74; 69.2%) and audit and teaching (n = 64; 59.8%). Respondents considered that barriers to universal UCBGA introduction included insufficient time following delivery, increased workload and encroachment of technology into birth. CONCLUSIONS The majority of respondents indicated support for UCBGA. Information derived from this study may be useful in identifying and resolving concerns prior to the introduction of UCBGA. Further, it could be useful in the preparation of education and implementation packages necessary for introduction of UCBGA.
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Affiliation(s)
- Christopher R H White
- School of Women's and Infants' Health, The University of Western Australia, Perth, Western Australia, Australia.
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Intrapartum fetal asphyxia: study of umbilical cord blood lactate in relation to fetal heart rate patterns. Arch Gynecol Obstet 2012; 287:1067-73. [PMID: 23274793 DOI: 10.1007/s00404-012-2694-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 12/17/2012] [Indexed: 10/27/2022]
Abstract
PURPOSES To correlate between umbilical artery cord blood lactate and acid-base status with intrapartum fetal heart rate monitoring, and to measure the reliability of umbilical cord blood lactate for prediction of early neonatal outcome. METHODS Sixty-six participants with intrapartum abnormal fetal heart rate monitoring and 60 participants with normal intrapartum recordings were recruited. The abnormal recordings included late onset, atypical variable and simple variable decelerations. After delivery, the arterial cord blood lactate, pH, actual base excess (ABE), and Apgar score were measured in all participants. RESULTS There was significant inverse correlation between cord lactate and pH and ABE in all participants (correlation coefficient = -0.7, p < 0.0001). The cord lactate was significantly higher in the late onset and atypical variable decelerations groups compared to control (p < 0.0001). There was no significant correlation between the Apgar score and blood lactate in all groups; however, the sensitivity and specificity of cord lactate to predict low score at 5 min were higher in comparison to cord pH. CONCLUSIONS Umbilical cord blood lactate is a reliable marker for intrapartum fetal asphyxia compared to cord acid-base status with better prediction for newborns with low Apgar score.
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Paris A, Maurice-Tison S, Coatleven F, Vandenbossche F, Dallay D, Horovitz J. Place du microdosage des lactates au scalp et au cordon devant des anomalies du rythme cardiaque fœtal pendant le travail. Étude prospective sur 162 patientes. ACTA ACUST UNITED AC 2012; 41:324-32. [DOI: 10.1016/j.jgyn.2011.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 10/23/2011] [Accepted: 11/02/2011] [Indexed: 11/25/2022]
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Holzmann M, Cnattingius S, Nordstrom L. Outcome of severe intrapartum acidemia diagnosed with fetal scalp blood sampling. J Perinat Med 2011; 39:545-8. [PMID: 21787260 DOI: 10.1515/jpm.2011.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AIM To analyze short-term neonatal outcome and the sampling to delivery interval in cases with severe intrapartum acidemia diagnosed with fetal scalp blood sampling (FBS). METHODS This is a secondary analysis of data from a trial of 2992 women, who were, when indicated, randomized to either lactate or pH analyses by FBS. Median and 95(th) centile values for lactate analyses were 2.9 mmol/L and 6.6 mmol/L, respectively. Corresponding pH values were 7.30 and 7.17. We defined severe intrapartum acidemia as lactate >6.6 mmol/L or pH <7.17. Outcome measures were cord artery pH <7.00, Apgar <7 at 5 min, hypoxic ischemic encephalopathy and time interval from FBS to delivery. RESULTS Severe intrapartum acidemia was present in 85/1355 (6.3%) cases with lactate analyses and in 69/1008 (6.8%) cases with pH analyses. Cord artery pH <7.00 occurred in 12/154 (7.8%), Apgar <7 at 5 min in 16/154 (10.4%) and hypoxic ischemic encephalopathy in 4/154 (2.6%) of the cases. There were no differences in outcomes between the two groups. However, delivery was expedited more rapidly in the pH management group (median 16 vs. 21 min; P=0.01). CONCLUSION Severe neonatal morbidity occurred in 10% or less in this high-risk group. FBS is an early marker of intrapartum hypoxia and can be used to prevent severe birth acidemia. Lactate might be an earlier marker than pH in the hypoxic process.
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Affiliation(s)
- Malin Holzmann
- Department of Obstetrics and Gynecology, Karolinska University Hospital, Karolinska Institute, Stockholm, Sweden.
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HEINIS AYESHAM, SPAANDERMAN MARCE, GUNNEWIEK JACQUELINEMKLEIN, LOTGERING FREDK. Scalp blood lactate for intra-partum assessment of fetal metabolic acidosis. Acta Obstet Gynecol Scand 2011; 90:1107-14. [DOI: 10.1111/j.1600-0412.2011.01237.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Boog G. [Cerebral palsy and perinatal asphyxia (II--Medicolegal implications and prevention)]. ACTA ACUST UNITED AC 2011; 39:146-73. [PMID: 21354846 DOI: 10.1016/j.gyobfe.2011.01.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 01/18/2011] [Indexed: 01/18/2023]
Abstract
Obstetric litigation is a growing problem in developed countries and its escalating cost together with increasing medical insurance premiums is a major concern for maternity service providers, leading to obstetric practice cessation by many practitioners. Fifty-four to 74 % of claims are based on cardiotocographic (CTG) abnormalities and their interpretation followed by inappropriate or delayed reactions. A critical analysis is performed about the nine criteria identified by the American College of Obstetricians and Gynecologists and the American Academy of Pediatrics in their task force on Neonatal Encephalopathy and Cerebral Palsy: four essential criteria defining neonatal asphyxia and five other suggesting an acute intrapartum event sufficient to cause cerebral palsy in term newborns. The importance of placental histologic examination is emphasized in order to confirm sudden catastrophic events occurring before or during labor or to detect occult thrombotic processes affecting the fetal circulation, patterns of decreased placenta reserve and adaptative responses to chronic hypoxia. It may also exclude intrapartum hypoxia by revealing some histologic patterns typical of acute chorioamnionitis and fetal inflammatory response or compatible with metabolic diseases. Magnetic resonance imaging (MRI) of the infant's damaged brain is very contributive to elucidate the mechanism and timing of asphyxia in conjunction with the clinical picture, by locating cerebral injuries predominantly in white or grey matter. Intrapartum asphyxia is sometimes preventable by delivering weak fetuses by cesarean sections before birth, by avoiding some "sentinel" events, and essentially by responding appropriately to CTG anomalies and performing an efficient neonatal resuscitation. During litigation procedures, it is necessary to have access to a readable CTG, a well-documented partogram, a complete analysis of umbilical cord gases, a placental pathology and an extensive clinical work-up of the newborn infant including cerebral MRI. Malpractice litigation in obstetric care can be reduced by permanent CTG education, respect of national CTG guidelines, use of adjuncts such as fetal blood sampling for pH or lactates, regular review of adverse events in Clinical Risk Management (CRM) groups and periodic audits about low arterial cord pH in newborns, admission to neonatal unit, the need for assisted ventilation and the decision-to-delivery interval for emergency operative deliveries. Considering the fast occurrence of fetal cerebral hypoxic injuries, and thus despite an adequate management, many intrapartum asphyxias will not be preventable. Conversely, well-documented hypoxic-ischemic brain insults during the antenatal period do not automatically exclude intrapartum suboptimal obstetric care.
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Affiliation(s)
- G Boog
- Service de gynécologie-obstétrique, hôpital Mère-et-Enfant, CHU de Nantes, 38 boulevard Jean-Monnet, Nantes cedex 1, France.
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[Cerebral palsy and perinatal asphyxia (I--diagnosis)]. ACTA ACUST UNITED AC 2010; 38:261-77. [PMID: 20378389 DOI: 10.1016/j.gyobfe.2010.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2010] [Accepted: 02/12/2010] [Indexed: 11/23/2022]
Abstract
Cerebral palsy (CP) is a group of disorders of the development of movement and posture, causing activity limitations, that are attributed to nonprogressing disturbances that occurred in the developing fetal or infant brain. The motor abnormalies are often accompanied by disturbances of sensation, perception, cognition, behavior and/or by a seizure disorder. The prevalence of CP has not decreased in developed countries over the past 30 years, despite the widespread use of electronic fetal heart rate monitoring and a 5- to 6-fold increase in the cesarean delivery rate. In the term newborn, CP may be attributed to perinatal asphyxia in case of metabolic acidosis in the cord blood (pH<7,00 and base deficit>12 mmol/L), followed by a moderate or severe neonatal encephalopathy within 24 hours and a further neurological impairement characterized by spastic quadriplegia and dyskinesia/dystonia. Dating the time of fetal asphyxia during delivery is possible when there are acute catastrophic complications during labor and unexpected acute or progressive fetal heart rate anomalies after a normal admission test, when there is a need for intensive neonatal resuscitation, a multi-organ failure within 72 hours of birth and visualization of acute non focal cerebral abnormalities, mainly by early magnetic resonance imaging (MRI). MRI sequences show either a brain-damaged pattern of the central basal ganglia, thalami and posterior limbs of internal capsules with relative cortical sparing, in acute, near-total asphyxial insults manifested by a continuous bradycardia or a pattern of cortical injury in the watershed zones and relative sparing of the central grey matter, in prolonged partial asphyxia, manifested by late or atypical variable decelerations with progressive fetal tachycardia, loss of reactivity and absent fluctuation. Prolongation of either type of asphyxial insult results in more global brain damage. In order to differentiate a CP occurring after perinatal asphyxia from other neurological sequelae in relation with infection, hemorrhage, stroke, malformations, genetic or metabolic diseases, it is essential that a definitive information from the brain by MRI and an extensive histological examination of the placenta are at disposal.
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