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1.
Eur J Anaesthesiol ; 40(1): 29-38, 2023 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-36131564

RESUMEN

Postpartum haemorrhage (PPH) remains the leading cause of pregnancy-related deaths worldwide. Typically, bleeding is controlled by timely obstetric measures in parallel with resuscitation and treatment of coagulopathy. Early recognition of abnormal coagulation is crucial and haemostatic support should be considered simultaneously with other strategies as coagulopathies contribute to the progression to massive haemorrhage. However, there is lack of agreement on important topics in the current guidelines for management of PPH. A clinical definition of PPH is paramount to understand the situation to which the treatment recommendations relate; however, reaching a consensus has previously proven difficult. Traditional definitions are based on volume of blood loss, which is difficult to monitor, can be misleading and leads to treatment delay. A multidisciplinary approach to define PPH considering vital signs, clinical symptoms, coagulation and haemodynamic changes is needed. Moreover, standardised algorithms or massive haemorrhage protocols should be developed to reduce the risk of morbidity and mortality and improve overall clinical outcomes in PPH. If available, point-of-care testing should be used to guide goal-directed haemostatic treatment. Tranexamic acid should be administered as soon as abnormal bleeding is recognised. Fibrinogen concentrate rather than fresh frozen plasma should be administered to restore haemostasis where there is elevated risk of fibrinogen deficiency (e.g., in catastrophic bleeding or in cases of abruption or amniotic fluid embolism) as it is a more concentrated source of fibrinogen. Lastly, organisational considerations are equally as important as clinical interventions in the management of PPH and have the potential to improve patient outcomes.


Asunto(s)
Hemostáticos , Hemorragia Posparto , Humanos , Femenino , Hemostáticos/uso terapéutico , Hemorragia Posparto/diagnóstico , Hemorragia Posparto/terapia , Fibrinógeno
2.
Br J Anaesth ; 129(6): 937-945, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36243576

RESUMEN

BACKGROUND: The optimal dose of tranexamic acid to inhibit hyperfibrinolysis in postpartum haemorrhage is unclear. Tranexamic Acid to Reduce Blood Loss in Hemorrhagic Cesarean Delivery (TRACES) was a double-blind, placebo-controlled, randomised, multicentre dose-ranging study to determine the dose-effect relationship for two regimens of intravenous tranexamic acid vs placebo. METHODS: Women experiencing postpartum haemorrhage during Caesarean delivery were randomised to receive placebo (n=60), tranexamic acid 0.5 g (n=57), or tranexamic acid 1 g i.v. (n=58). Biomarkers of fibrinolytic activation were assayed at five time points, with inhibition of hyperfibrinolysis defined as reductions in the increase over baseline in D-dimer and plasmin-antiplasmin levels and in the plasmin peak time. RESULTS: In the placebo group, hyperfibrinolysis was evidenced by a mean increase over baseline [95% confidence interval] of 93% [68-118] for D-dimer level at 120 min and 56% [25-87] for the plasmin-antiplasmin level at 30 min. A dose of tranexamic acid 1 g was associated with smaller increases over baseline (D-dimers: 38% [13-63] [P=0.003 vs placebo]; plasmin-antiplasmin: -2% [-32 to 28] [P=0.009 vs placebo]). A dose of tranexamic acid 0.5 g was less potent, with non-significant reductions (D-dimers: 58% [32-84] [P=0.06 vs placebo]; plasmin-antiplasmin: 13% [18-43] [P=0.051]). Although both tranexamic acid doses reduced the plasmin peak, reduction in plasmin peak time was significant only for the 1 g dose of tranexamic acid. CONCLUSIONS: Fibrinolytic activation was significantly inhibited by a dose of intravenous tranexamic acid 1 g but not 0.5 g. Pharmacokinetic-pharmacodynamic modelling of these data might identify the best pharmacodynamic monitoring criteria and the optimal tranexamic acid dosing regimen for treatment of postpartum haemorrhage. CLINICAL TRIAL REGISTRATION: NCT02797119.


Asunto(s)
Antifibrinolíticos , Trastornos de la Coagulación Sanguínea , Hemorragia Posparto , Ácido Tranexámico , Humanos , Embarazo , Femenino , Ácido Tranexámico/uso terapéutico , Hemorragia Posparto/tratamiento farmacológico , Fibrinolisina , Método Doble Ciego , Cesárea , Biomarcadores
3.
Can J Anaesth ; 69(11): 1340-1348, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35927539

RESUMEN

PURPOSE: Individuals in late pregnancy are at risk of significant hemodynamic variations, especially during Cesarean delivery. Although non-invasive monitoring might enable the early detection of variations in cardiac output (CO), clinical validation is lacking. METHODS: In a prospective, single-center study, we measured CO simultaneously with finger plethysmography and transthoracic echocardiography in 100 third-trimester pregnant individuals in the supine and left lateral decubitus (LLD) positions. RESULTS: A Bland-Altman analysis revealed a mean (standard deviation) bias of 1.36 (1.04) L·min-1 in the supine position (95% limits of agreement, -0.68 to 3.4 L·min-1; percent error, 26.6%), indicating overestimation by finger plethysmography. The intra-class correlation coefficient was 0.43 (95% confidence interval [CI], 0.33 to 0.51). Regarding the changes in CO induced by the supine-to-LLD transition, the concordance rate in a four-quadrant plot was 98.3% (95% CI, 91.1 to 99.9%). CONCLUSION: Our study showed a poor reliability of finger plethysmography for static measurement of CO. Nevertheless, finger plethysmography had a reasonably high concordance rate for the detection of CO changes secondary to positional changes in late-pregnant individuals. STUDY REGISTRATION DATE: www. CLINICALTRIALS: gov (NCT03735043); registered 8 November 2018.


RéSUMé: OBJECTIF: Les personnes en fin de grossesse sont à risque de variations hémodynamiques importantes, en particulier pendant un accouchement par césarienne. Bien que le monitorage non invasif puisse permettre la détection précoce des variations du débit cardiaque (DC), la validation clinique de ce type de monitorage fait défaut. MéTHODE: Dans une étude prospective monocentrique, nous avons mesuré le DC simultanément avec la pléthysmographie au doigt et l'échocardiographie transthoracique chez 100 femmes au troisième trimestre de leur grossesse en décubitus dorsal et en décubitus latéral gauche (DLG). RéSULTATS: Une analyse de Bland-Altman a révélé un biais moyen (écart type) de 1,36 (1,04) L·min­1 en décubitus dorsal (limites d'agrément à 95 %, -0,68 à 3,4 L·min­1; pourcentage d'erreur, 26,6 %), indiquant une surestimation lorsque mesuré par pléthysmographie au doigt. Le coefficient de corrélation intraclasse était de 0,43 (intervalle de confiance [IC] à 95 %, 0,33 à 0,51). En ce qui concerne les changements de DC induits par la transition du décubitus dorsal au décubitus latéral gauche, le taux de concordance dans un diagramme à quatre quadrants était de 98,3 % (IC 95 %, 91,1 à 99,9 %). CONCLUSION: Notre étude a montré une faible fiabilité de la pléthysmographie au doigt pour la mesure statique du DC. Néanmoins, la pléthysmographie au doigt avait un taux de concordance raisonnablement élevé pour la détection des changements de DC secondaires aux changements de position chez les patientes en fin de grossesse. www.clinicaltrials.gov (NCT03735043); enregistrée le 8 novembre 2018.


Asunto(s)
Pletismografía , Termodilución , Femenino , Embarazo , Humanos , Estudios Prospectivos , Reproducibilidad de los Resultados , Gasto Cardíaco , Monitoreo Fisiológico
4.
Nephrol Dial Transplant ; 35(9): 1538-1546, 2020 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-30805631

RESUMEN

BACKGROUND: Among the severe complications of preeclampsia (PE), acute kidney injury (AKI) is problematic if features of thrombotic microangiopathy (TMA) are present. Although a haemolysis enzyme liver low-platelets syndrome is considerably more frequent, it is vital to rule out a flare of atypical haemolytic and uraemic syndrome (aHUS). Our objective was to improve differential diagnosis procedures in post-partum AKI. METHODS: A total of 105 cases of post-partum AKI, admitted to nine different regional French intensive care units from 2011 to 2015, were analysed. Analysis included initial and final diagnosis, renal features, haemostasis and TMA parameters, with particular focus on the dynamics of each component within the first days following delivery. A classification and regression tree (CART) was used to construct a diagnostic algorithm. RESULTS: AKI was attributed to severe PE (n = 40), post-partum haemorrhage (n = 33, including 13 renal cortical necrosis) and 'primary' TMA (n = 14, including 10 aHUS and 4 thrombotic thrombocytopenic purpura). Congruence between initial and final diagnosis was low (63%). The dynamics of haemoglobin, haptoglobin and liver enzymes were poorly discriminant. In contrast, the dynamic pattern of platelets was statistically different between primary TMA-related AKI and other groups. CART analysis independently highlighted the usefulness of platelet trajectory in the diagnostic algorithm. Limitations of this study include that only the most severe cases were included in this retrospective study, and the circumstantial complexity is high. CONCLUSION: Trajectory of platelet count between admission and Day 3 helps to guide therapeutic decisions in cases of TMA-associated post-partum AKI. Our study also strongly suggests that during the post-partum period, there may be a risk of transient, slowly recovering TMA in cases of severe endothelial injury in women without a genetic mutation known to induce aHUS.


Asunto(s)
Lesión Renal Aguda/diagnóstico , Biomarcadores/metabolismo , Placenta/patología , Periodo Posparto , Microangiopatías Trombóticas/complicaciones , Lesión Renal Aguda/etiología , Lesión Renal Aguda/terapia , Adulto , Femenino , Humanos , Placenta/metabolismo , Recuento de Plaquetas , Embarazo , Estudios Retrospectivos
5.
Anesth Analg ; 130(6): 1670-1677, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-31702699

RESUMEN

BACKGROUND: Carbohydrate intake during physical exercise improves muscle performance and decreases fatigue. We hypothesized that carbohydrate intake during labor, which is a period of significant physical activity, can decrease the instrumental vaginal delivery rate. METHODS: In a multicenter, prospective, randomized, controlled trial, healthy adult pregnant women presenting with spontaneous labor were assigned to a "Carbohydrate" group (advised to drink 200 mL of apple or grape juice without pulp every 3 hours) or a "Fasting" group (water only). The primary outcome was the instrumental vaginal delivery rate. Secondary outcomes included duration of labor, rate of cesarean delivery, evaluation of maternal hunger, thirst, stress, fatigue, and overall feeling during labor by numeric rating scale (0 worst rating to 10 best rating), rate of vomiting, and hospital length of stay. Statistical analysis was performed on an intention-to-treat basis. The primary outcome was tested with the "Fasting" group as the reference group. The P values for secondary outcomes were adjusted for multiple comparisons. The differences between groups are reported with 99% confidence interval (CI). RESULTS: A total of 3984 women were analyzed (2014 in the Carbohydrate group and 1970 in the Fasting group). There was no difference in the rate of instrumental delivery between the Carbohydrate (21.0%) and the Fasting (22.4%) groups (difference, -1.4%; 99% CI, -4.9 to 2.2). No differences were found between the Carbohydrate and the Fasting groups for the duration of labor (difference, -7 minutes; 99% CI, -25 to 11), the rate of cesarean delivery (difference, -0.3%; 99% CI, -2.4 to 3.0), the rate of vomiting (difference, 2.8%; 99% CI, 0.2-5.7), the degree of self-reported fatigue (difference, 1; 99% CI, 0-2), self-reported hunger (difference, 0; 99% CI, -1 to 1), thirst (difference, 0; 99% CI, -1 to 1), stress (difference, 0; 99% CI, -1 to 1), overall feeling (difference, 0; 99% CI, 0-0), and the length of hospitalization (difference, 0; 99% CI, -1 to 0). CONCLUSIONS: Carbohydrate intake during labor did not modify the rate of instrumental vaginal delivery.


Asunto(s)
Carbohidratos/administración & dosificación , Trabajo de Parto/fisiología , Adulto , Cesárea , Parto Obstétrico , Agua Potable/administración & dosificación , Extracción Obstétrica , Femenino , Jugos de Frutas y Vegetales , Humanos , Oxitócicos/administración & dosificación , Embarazo , Estudios Prospectivos , Instrumentos Quirúrgicos
7.
Eur J Anaesthesiol ; 35(2): 130-133, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29112543

RESUMEN

: Thromboembolic events in the pregnant and postpartum patient remain rare but potentially fatal complications. The aim of this section was to analyse the few prospective studies addressing the issue of thromboprophylaxis following a surgical procedure during and immediately after pregnancy, as well as national guidelines, and to propose European guidelines on this specific condition. Thromboprophylaxis is broadly recommended due to the combined risks of surgery and pregnancy or the postpartum period, regardless of the mode of delivery. We recommend prophylactic thromboprophylaxis following surgery during pregnancy or the postpartum period when they imply, as a consequence, bed rest, until full mobility is recovered (Grade 1C). Similarly, thromboprophylaxis should be used in cases of perioperative infection during pregnancy or the postpartum period. Concerning thromboprophylaxis following a caesarean section, it seems avoidable only in elective procedures in low-risk patients, after a normal pregnancy, and with an early rehabilitation protocol. The duration of thromboprophylaxis following caesarean section should be at least 6 weeks for high-risk patients, and at least 7 days for the other patients requiring anticoagulation (Grade 1C).


Asunto(s)
Cesárea/efectos adversos , Procedimientos Quirúrgicos Electivos/efectos adversos , Atención Perioperativa/normas , Atención Posnatal/normas , Complicaciones del Embarazo/cirugía , Tromboembolia Venosa/prevención & control , Adulto , Anestesiología/métodos , Anestesiología/normas , Anticoagulantes/administración & dosificación , Anticoagulantes/efectos adversos , Anticoagulantes/normas , Reposo en Cama/normas , Cuidados Críticos/métodos , Cuidados Críticos/normas , Europa (Continente) , Femenino , Heparina de Bajo-Peso-Molecular/administración & dosificación , Heparina de Bajo-Peso-Molecular/efectos adversos , Heparina de Bajo-Peso-Molecular/normas , Humanos , Atención Perioperativa/métodos , Atención Posnatal/métodos , Periodo Posparto , Embarazo , Factores de Riesgo , Sociedades Médicas/normas , Tromboembolia Venosa/etiología
8.
Anesth Analg ; 121(3): 759-766, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26086620

RESUMEN

BACKGROUND: The rate of neuraxial analgesia during labor in France is one of the highest among high-income countries: 77% of vaginal deliveries in 2010. In this context, the question of how women's preferences for delivering without neuraxial analgesia relate to actual use is of interest. Our objective was to study the factors associated with women's initial preference for labor without neuraxial analgesia and those associated with its use in women who initially preferred not to have it. METHODS: We used data from the 2010 French National Perinatal Survey, a cross-sectional study of a representative sample of all births in France. Data were collected from interviews with mothers in the postpartum ward and from medical records. Our sample included 7123 women who had vaginal deliveries and were at low risk for cesarean delivery. The factors analyzed were maternal sociodemographic characteristics, prenatal care, childbirth class attendance, labor management, and organization of maternity units. Multilevel Poisson regression models were used to study factors associated with women's initial preference in the overall population and to study factors associated with actual use of neuraxial analgesia in the group of women who initially preferred not to have it. RESULTS: Initially, 26% of our population (n = 1835) preferred to deliver without neuraxial analgesia; this preference was associated with high parity, unfavorable social conditions, and delivery in a public maternity unit. Among these women, 52% (n = 961) delivered with neuraxial analgesia. This discrepancy between initial preference and actual use was significantly associated with nulliparity (adjusted relative risk [aRR] = 1.4; 95% confidence interval [CI], 1.3-1.6), oxytocin augmentation of labor (aRR = 2.4; 95% CI, 2.1-2.7), presence of an anesthesiologist in the unit 24/7 (aRR = 1.4; 95% CI, 1.2-1.6; compared with delivery in hospitals without an anesthesiologist on site 24/7), and high midwife workload (aRR = 1.1; 95% CI, 1.0-1.2). There was no clear association with maternal educational level. CONCLUSIONS: Our results suggest that parity, the management of labor, and availability of anesthesiologists play a major role in the intrapartum decision to use neuraxial analgesia for women who initially preferred not to have it. Further research is necessary in the clinical circumstances leading to this decision and the role of women's demands and medical staff attitudes throughout labor.


Asunto(s)
Analgesia Obstétrica/psicología , Analgesia Obstétrica/estadística & datos numéricos , Recolección de Datos , Dolor de Parto/psicología , Trabajo de Parto/psicología , Participación del Paciente/psicología , Adulto , Estudios Transversales , Recolección de Datos/métodos , Femenino , Francia/epidemiología , Humanos , Dolor de Parto/epidemiología , Dolor de Parto/terapia , Manejo del Dolor/métodos , Manejo del Dolor/psicología , Embarazo , Adulto Joven
9.
Anesth Analg ; 121(2): 486-91, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26049780

RESUMEN

BACKGROUND: In this pilot study, we hypothesized that velocity parameters obtained from changes in clot amplitude (A) and clot elasticity (E) measured with thromboelastometry (ROTEM, Tem International GmbH, Munich, Germany) could improve detection of fibrinolysis in whole blood obtained from children undergoing surgery for congenital heart disease. METHODS: Whole blood samples were obtained after induction of general anesthesia. Seven conditions were studied: native whole blood (baseline) and samples with progressive tissue-type plasminogen activator (t-PA) concentrations (102, 255, 512, 1024, 1535, and 2539 units/mL). We calculated velocity curves based on changes in clot amplitude and elasticity between different time points using ROTEM data. The analysis allowed for the determination of the following parameters: the maximum rate of thrombus formation based on amplitude or elasticity and the maximum rate of thrombus lysis measured based on amplitude (MTL) or maximum rate of thrombus lysis measured based on elasticity (MTLe). We compared these parameters with the lysis in relation to maximal clotting firmness and measured 30 minutes after the clotting time (LI30, in percent). RESULTS: Concentrations of t-PA ≥ 255 units/mL resulted in a decrease in LI30 (mean difference, 255 units/mL versus baseline, -31.05%, P < 0.0001) and the maximum rate of thrombus formation based on amplitude (mean difference, 255 units/mL versus baseline, -7.5, P = 0.005). Concentrations of t-PA ≥ 512 units/mL resulted in changes in maximum rate of thrombus formation based on elasticity (mean difference, 512 units/mL versus baseline, -10.9, P = 0.010), MTL (mean difference, 255 units/mL versus baseline, -3.2, P = 0.016), and MTLe (mean difference, 255 units/mL versus baseline, -7.8, P = 0.004). For t-PA concentrations ≥ 512 units/mL, clot formation was abolished. The area under the receiver operating characteristics curves did not differ between LI30, MTL, and MTLe for the detection of minimal fibrinolytic activation (102 units/mL; 0.74, 0.75, and 0.72, respectively, P = 0.708), whereas sensitivity and specificity of the cutoff values 97% for LI30, -0.3 for MTL, and -0.5 for MTLe were 52% and 85%, 83% and 45%, and 83% and 45%, respectively. CONCLUSIONS: Velocity curves based on the amplitudes or clot elasticity could provide objective measurement of clot growth and clot lysis kinetics, allowing detection of even minor fibrinolysis. Further studies are needed to assess the clinical relevance of these parameters.


Asunto(s)
Fibrinólisis , Cardiopatías Congénitas/sangre , Tromboelastografía , Factores de Edad , Anestesia General , Procedimientos Quirúrgicos Cardíacos , Preescolar , Fibrinólisis/efectos de los fármacos , Cardiopatías Congénitas/diagnóstico , Cardiopatías Congénitas/cirugía , Humanos , Lactante , Cinética , Proyectos Piloto , Valor Predictivo de las Pruebas , Estudios Prospectivos , Estudios Retrospectivos , Activador de Tejido Plasminógeno/farmacología
10.
Anesth Analg ; 119(5): 1140-7, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25329026

RESUMEN

Postpartum hemorrhage (PPH) is a leading cause of maternal mortality worldwide. Recent advances in the management of severe bleeding for trauma patients may provide insight into PPH management, but must be applied with caution considering the significant differences between trauma and obstetric patients. In this review, we summarized evidence for current management strategies for patients with major obstetric hemorrhage, including (1) rapid laboratory assessment of coagulopathy, (2) early transfusion of plasma and high plasma-to-red blood cell transfusion ratios in massive PPH, and (3) use of tranexamic acid and fibrinogen concentrates in the setting of PPH complicated by coagulopathy.


Asunto(s)
Hemorragia Posparto/terapia , Adulto , Trastornos de la Coagulación Sanguínea/tratamiento farmacológico , Trastornos de la Coagulación Sanguínea/etiología , Transfusión Sanguínea/métodos , Femenino , Humanos , Hemorragia Posparto/diagnóstico , Hemorragia Posparto/prevención & control , Embarazo
11.
Anaesth Crit Care Pain Med ; 43(2): 101340, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38128731

RESUMEN

OBJECTIVE: Post-partum hemorrhage (PPH) is the leading preventable cause of worldwide maternal morbidity and mortality. Risk factors for psychological disorders following PPH are currently unknown. HELP-MOM study aimed to determine the incidence and identify risk factors for psychological disorders following PPH. METHODS: HELP-MOM study was a prospective, observational, national, and multicentre study including patients who experienced severe PPH requiring sulprostone. The primary endpoint was the occurrence of psychological disorders (anxiety and/or post-traumatic disorder and/or depression) following PPH, assessed at 1, 3, and 6 months after delivery using HADS, IES-R, and EPDS scales. RESULTS: Between November 2014 and November 2016, 332 patients experienced a severe PPH and 236 (72%) answered self-questionnaires at 1, 3, and 6 months. A total of 161 (68%) patients declared a psychological disorder following severe PPH (146 (90.1%) were screened positive for anxiety, 96 (58.9%) were screened positive for post-traumatic stress disorder, and 94 (57.7%) were screened positive for post-partum depression). In multivariable analysis, the use of intra-uterine tamponnement balloon was associated with a lower risk to be screened positive for psychological disorder after severe PPH (OR = 0.33 [IC95% 0.15-0.69], p = 0.004, and after propensity score matching (OR=0.34 [IC95% 0.12-0.94], p = 0.04)). Low hemoglobin values during severe PPH management were associated with a higher risk of being screened positive for psychological disorders. Finally, we did not find differences in desire or pregnancy between patients without or with psychological disorders occurring in the year after severe PPH. DISCUSSION: Severe PPH was associated with significant psychosocial morbidity including anxiety, post-traumatic disorder, and depression. This should engage a psychological follow-up. Large cohorts are urgently needed to confirm our results. REGISTRATION: ClinicalTrials.gov under number NCT02118038.


Asunto(s)
Hemorragia Posparto , Trastornos por Estrés Postraumático , Femenino , Humanos , Embarazo , Ansiedad/epidemiología , Ansiedad/etiología , Hemorragia Posparto/epidemiología , Hemorragia Posparto/terapia , Periodo Posparto , Estudios Prospectivos , Trastornos por Estrés Postraumático/epidemiología , Trastornos por Estrés Postraumático/etiología
12.
Anaesth Crit Care Pain Med ; : 101404, 2024 Jul 09.
Artículo en Inglés | MEDLINE | ID: mdl-38992466

RESUMEN

The French National Authority for Health (HAS) recently issued guidelines for patient blood management (PBM) in surgical procedures. These recommendations are based on three usual pillars of PBM: optimizing red cell mass, minimizing blood loss and optimizing anemia tolerance. In the preoperative period, these guidelines recommend detecting anemia and iron deficiency and taking corrective measures well in advance of surgery, when possible, in case of surgery with moderate to high bleeding risk or known preoperative anemia. In the intraoperative period, the use of tranexamic acid and some surgical techniques are recommended to limit bleeding in case of high bleeding risk or in case of hemorrhage, and the use of cell salvage is recommended in some surgeries with a major risk of transfusion. In the postoperative period, the limitation of blood samples is recommended but the monitoring of postoperative anemia must be carried out and may lead to corrective measures (intravenous iron in particular) or more precise diagnostic assessment of this anemia. A "restrictive" transfusion threshold considering comorbidities and, most importantly, the tolerance of the patient is recommended postoperatively. The implementation of a strategy and a program for patient blood management is recommended throughout the perioperative period in healthcare establishments in order to reduce blood transfusion and length of stay. This article presents an English translation of the HAS recommendations and a summary of the rationale underlying these recommendations.

13.
Best Pract Res Clin Anaesthesiol ; 36(3-4): 411-426, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36513435

RESUMEN

In the last decades, tranexamic acid (TXA) has emerged as an essential tool in blood loss management in obstetrics. TXA prophylaxis for postpartum haemorrhage (PPH) has been studied in double-blind, placebo-controlled, randomized clinical trials (RCTs). Given the small observed preventive effect, the systematic use of TXA for vaginal and/or caesarean deliveries remains controversial. The result of a pharmacokinetic modelling suggests that relative to intravenous administration, intramuscular administration may be an equally effective alternative route for preventing PPH and may enable access to this drug in low-resource countries. Prophylaxis is currently studied in high-risk populations, such as women with prepartum anaemia or placenta previa. TXA effectively reduces blood loss and PPH-related morbidity and mortality during active PPH, as demonstrated by high-grade evidence from large RCTs. The drug has a good safety profile: in most cases, only mild gastrointestinal or visual adverse events may be observed. TXA use does not increase the risk of serious adverse events, such as venous or arterial thromboembolism, seizures, or acute kidney injury. The TRACES in vivo analysis of biomarkers of TXA's antifibrinolytic effect have suggested that a dose of at least 1 g is required for the treatment of PPH. The TRACES pharmacokinetic model suggests that because TXA can be lost in the haemorrhaged blood, a second dose should be administered if the PPH continues or if severe coagulopathy occurs. Future pharmacodynamic analyses will focus on the appropriateness of TXA dosing regimens with regard to the intensity of fibrinolysis in catastrophic obstetric events.


Asunto(s)
Antifibrinolíticos , Hemorragia Posparto , Ácido Tranexámico , Embarazo , Femenino , Humanos , Ácido Tranexámico/efectos adversos , Hemorragia Posparto/tratamiento farmacológico , Hemorragia Posparto/prevención & control , Antifibrinolíticos/efectos adversos , Cesárea , Administración Intravenosa , Ensayos Clínicos Controlados Aleatorios como Asunto
14.
Pharmaceutics ; 14(3)2022 Mar 06.
Artículo en Inglés | MEDLINE | ID: mdl-35335955

RESUMEN

The aim of this study was to evaluate the population pharmacokinetics of tranexamic acid (TXA) administered intravenously at a single dose of 0.5 or 1 g in parturients undergoing active hemorrhagic cesarean delivery and to evaluate the influence of patient variables on TXA pharmacokinetics. Subjects from three recruiting centers were included in this PK sub-study if randomized in the experimental group (i.v TXA 0.5 g or 1 g over one minute) of the TRACES study. Blood samples and two urinary samples were collected within 6 h after TXA injection. Parametric non-linear mixed-effect modeling (Monolix v2020R1) was computed. The final covariate model building used 315 blood and 117 urinary concentrations from seventy-nine patients. A two-compartment model with a double first-order elimination from the central compartment best described the data. The population estimates of clearance (CL), central volume of distribution (V1), and half-life for a typical 70 kg patient with an estimated renal clearance of 150 mL/min (Cockroft-Gault) were 0.14 L/h, 9.25 L, and 1.8 h. A correlation between estimated creatinine clearance and CL, body weight before pregnancy, and V1 was found and partly explained the PK variability. The final model was internally validated using a 500-run bootstrap. The first population pharmacokinetic model of TXA in active hemorrhagic caesarean section was successfully developed and internally validated.

15.
Crit Care ; 15(2): R117, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21496253

RESUMEN

INTRODUCTION: Our purpose in conducting this study was to determine whether administration of high-dose tranexamic acid (TA) at the time of diagnosis of postpartum haemorrhage (PPH) could reduce blood loss. METHODS: This was a randomised, controlled, multicentred, open-label trial. Women with PPH >800 mL following vaginal delivery were randomly assigned to receive TA (loading dose 4 g over 1 hour, then infusion of 1 g/hour over 6 hours) or not. In both groups, packed red blood cells (PRBCs) and colloids could be used according to French guidelines. The use of additional procoagulant treatments was permitted only in cases involving intractable bleeding. The primary objective was to assess the efficacy of TA in the reduction of blood loss in women with PPH, and the secondary objectives were the effect of TA on PPH duration, anaemia, transfusion and the need for invasive procedures. RESULTS: A total of 144 women fully completed the protocol (72 in each group). Blood loss between enrolment and 6 hours later was significantly lower in the TA group than in the control group (median, 173 mL; first to third quartiles, 59 to 377) than in controls (221 mL; first to third quartiles 105 to 564) (P = 0.041). In the TA group, bleeding duration was shorter and progression to severe PPH and PRBC transfusion was less frequent than in controls (P < 0.03). Invasive procedures were performed in four women in the TA group and in seven controls (P = NS). PPH stopped after only uterotonics and PRBC transfusion in 93% of women in the TA group versus 79% of controls (P = 0.016). Mild, transient adverse manifestations occurred more often in the TA group than in the control group (P = 0.03). CONCLUSIONS: This study is the first to demonstrate that high-dose TA can reduce blood loss and maternal morbidity in women with PPH. Although the study was not adequately powered to address safety issues, the observed side effects were mild and transient. A larger international study is needed to investigate whether TA can decrease the need for invasive procedures and reduce maternal morbidity in women with PPH. TRIAL REGISTRATION: Controlled Trials ISRCTN09968140.


Asunto(s)
Antifibrinolíticos/administración & dosificación , Hemorragia Posparto/tratamiento farmacológico , Ácido Tranexámico/administración & dosificación , Adulto , Relación Dosis-Respuesta a Droga , Femenino , Humanos , Inyecciones Intravenosas , Embarazo , Estudios Prospectivos , Resultado del Tratamiento , Adulto Joven
16.
Anaesth Crit Care Pain Med ; 40(5): 100934, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34400388

RESUMEN

The incidence of acute pain during caesarean section varies between studies, with a reported rate ranging between 0.5%-17% for spinal anaesthesia and 1.7%-20% for epidural anaesthesia. Leaders from the French Club anesthésie-réanimation en obstétrique (CARO) convened to provide a clinical framework and practice bulletin to prevent, recognise and treat acute pain during caesarean section. First, a steering group agreed on 5 themes guiding quality of anaesthesia care for caesarean section: (1) appropriate neuraxial anaesthesia and testing of the surgical block prior to incision (PREVENTION); (2) appropriate organisation around decision to delivery time (COMMUNICATION); 3) appropriate management of pain before and/or after skin incision (RECOGNITION & RESPONSE); (4) appropriate prevention, identification and management of post-traumatic stress disorder (SCREENING, PREVENTION AND MANAGEMENT OF COMPLICATIONS); (5) management of medico-legal issues (MITIGATION). Then, an interdisciplinary multi-professional taskforce composed of obstetric anaesthesiologists, obstetricians, neonatologists, psychiatrists, midwifes, nurse anaesthetists, lawyers and patients, developed 23 statements that contribute to optimise care for caesarean section under neuraxial anaesthesia, of which 10 were deemed key recommendations. A decision-tree was built to optimise prevention, communication, recognition, response and management. The aim of this practice bulletin, which was endorsed by 6 societies, is to raise awareness on the risks associated with severe acute pain during caesarean section and to provide best clinical practices; pain during caesarean is not acceptable and should be prevented and managed by all stakeholders.


Asunto(s)
Dolor Agudo , Anestesia Epidural , Anestesia Obstétrica , Anestesia Raquidea , Dolor Agudo/diagnóstico , Dolor Agudo/prevención & control , Cesárea/efectos adversos , Femenino , Humanos , Embarazo
17.
Anaesth Crit Care Pain Med ; 40(5): 100834, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-33753296

RESUMEN

BACKGROUND: The proportion of women with multiple sclerosis experiencing a relapse in the post-partum period after neuraxial labour analgesia or neuraxial anaesthesia remains uncertain. This study aimed to assess the association between neuraxial labour analgesia or neuraxial anaesthesia and the occurrence of relapse during the first three months post-partum. METHODS: In this retrospective cohort study, cases of women with a diagnosis of multiple sclerosis delivering between January 2010 and April 2015 were analysed. Demographic, anaesthetic and obstetric characteristics, occurrence and number of relapses in the year preceding pregnancy, during pregnancy, and the first three post-partum months, were recorded. Logistic regression analyses were performed for the identification of factors associated with the occurrence of post-partum relapse. RESULTS: A total of 118 deliveries in 104 parturients were included, these were 78 (66%) vaginal deliveries and 40 (34%) caesarean deliveries. Neuraxial analgesia was provided in 50 deliveries, and neuraxial anaesthesia in 46 deliveries; no neuraxial anaesthesia or analgesia was administered in remaining 22 deliveries. Post-partum relapse occurred in 31 women (26%). There was no association between obstetric or anaesthetic characteristics and post-partum relapse. Both the occurrence and number of relapses prior to and during pregnancy, and the time between last relapse and delivery, were significantly associated with post-partum relapse in univariate analysis. The occurrence of relapse within the year preceding the pregnancy was the sole independent factor associated with post-partum relapse. CONCLUSION: Neuraxial procedures were not associated with increased rate of post-partum relapse; only disease activity prior to pregnancy was predictive of post-partum relapse.


Asunto(s)
Analgesia , Anestesia , Esclerosis Múltiple , Femenino , Humanos , Periodo Posparto , Embarazo , Recurrencia , Estudios Retrospectivos
18.
Orphanet J Rare Dis ; 16(Suppl 2): 322, 2021 07 26.
Artículo en Inglés | MEDLINE | ID: mdl-34304732

RESUMEN

Systemic sclerosis (SSc) is a generalized disease of the connective tissue, arterioles, and microvessels, characterized by the appearance of fibrosis and vascular obliteration. There are two main phenotypical forms of SSc: a diffuse cutaneous form that extends towards the proximal region of the limbs and/or torso, and a limited cutaneous form where the cutaneous sclerosis only affects the extremities of the limbs (without passing beyond the elbows and knees). There also exists in less than 10% of cases forms that never involve the skin. This is called SSc sine scleroderma. The prognosis depends essentially on the occurrence of visceral damage and more particularly interstitial lung disease (which is sometimes severe), pulmonary arterial hypertension, or primary cardiac damage, which represent the three commonest causes of mortality in SSc. Another type of involvement with poor prognosis, scleroderma renal crisis, is rare (less than 5% of cases). Cutaneous extension is also an important parameter, with the diffuse cutaneous forms having less favorable prognosis.


Asunto(s)
Hipertensión Pulmonar , Enfermedades Pulmonares Intersticiales , Esclerodermia Sistémica , Enfermedades de la Piel , Humanos , Piel
20.
Eur J Obstet Gynecol Reprod Biol ; 245: 19-25, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31821921

RESUMEN

INTRODUCTION: To determine a minimum threshold of medical staffing needs (obstetricians-gynecologists, anesthesiologists-resuscitation specialists, nurse-anesthetists, pediatricians, and midwives) to ensure the safety and quality of care for unscheduled obstetrics-gynecology activity. MATERIALS AND METHODS: Face to face meetings of French healthcare professionals involved in perinatal care in different types of practices (academic hospital, community hospital or private practice) who belong to French perinatal societies: French National College of Gynecologists-Obstetricians (CNGOF), the French Society of Anesthesia and Resuscitation Specialists (SFAR), the French Society of Neonatology (SFN), the French Society of Perinatal Medicine (SFMP), the National College of French Midwives (CNSF), and the French Federation of Perinatal Care Networks (FFRSP). RESULTS: Different minimum thresholds for each category of care provider were proposed according to the number of births/year in the facility. These minimum thresholds can be modulated upwards as a function of the level of care (Level 1, 2 or 3 for perinatal centers), existence of an emergency department, and responsibilities as a referral center for maternal-fetal and/or surgical care. For example, an obstetrics-gynecology department handling 3000-4500 births per year without serving as a referral center must have an obstetrician-gynecologist, an anesthesiologist-resuscitation specialist, a nurse-anesthetist, and a pediatrician onsite specifically to provide care for unscheduled obstetrics-gynecology needs and a second obstetrician-gynecologist available within a time compatible with security requirements 24/7; the number of midwives always present (24/7) onsite and dedicated to unscheduled care is 5.1 for 3000 births and 7.2 for 4500 births. A maternity unit's occupancy rate must not exceed 85 %. CONCLUSION: The minimum thresholds proposed here are intended to improve the safety and quality of care of women who require unscheduled care in obstetrics-gynecology or during the perinatal period.


Asunto(s)
Servicios Médicos de Urgencia/provisión & distribución , Ginecología/métodos , Fuerza Laboral en Salud/estadística & datos numéricos , Obstetricia/métodos , Admisión y Programación de Personal/estadística & datos numéricos , Atención a la Salud/normas , Atención a la Salud/estadística & datos numéricos , Servicios Médicos de Urgencia/normas , Femenino , Francia , Ginecología/normas , Humanos , Partería/métodos , Partería/normas , Obstetricia/normas , Admisión y Programación de Personal/normas , Embarazo , Mejoramiento de la Calidad
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