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1.
Acta Obstet Gynecol Scand ; 103(2): 360-367, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38053225

RESUMO

INTRODUCTION: Performing surgical procedures is a recognized source of stress for surgeons. Vocational stress is an important contributor to performance, patient care, and burnout with dispositional and environmental factors contributing. Accurately assessing surgeon stress is critical to measuring effectiveness of stress reduction programs. The primary aim was to identify differences between surgeons' self-reported anticipated stress and anxiety prior to gynecological surgery, compared with their recollection of experienced stress and anxiety during surgery. Secondary aims assessed any differences by level of training, surgical type, and surgeon role. MATERIAL AND METHODS: Attending and resident gynecologists performing routine elective surgeries completed a visual analog scale (VAS) assessing perceived stress and the State-Trait Anxiety Inventory (STAI) prior to and immediately after completing 161 elective surgeries including total laparoscopic hysterectomy, laparoscopic excision of moderate-severe endometriosis, or hysteroscopic myomectomy. RESULTS: Eight attending gynecologists and nine residents participated. Residents commenced as primary surgeon in 62/90 (69%) procedures. Stress experienced during surgery was greater than anticipated in 92/161 (57%) surgery episodes (mean VAS increase: 3.9; 95% CI: 1.1-6.8, p = 0.009). State anxiety was greater than anticipated in 99/161 (62%) episodes (mean state anxiety increase: 4.4; 95% CI: 3.0-5.8, p < 0.001). Greater preprocedural anticipatory stress and anxiety was observed in residents vs. attending gynecologists (VAS 51.9 vs. 22.8, p < 0.001; state anxiety 38.3 vs. 28.1, p < 0.001) and in primary vs. assistant surgeons (VAS 47.2 vs. 29.9, p < 0.001; state anxiety 36.9 vs. 28.3, p < 0.001). Intraoperative stress and anxiety were greater in primary surgeons (VAS 50.4 vs. 30.5, p < 0.001; anxiety 41.3 vs. 32.5, p < 0.001) and residents (VAS 43.4 vs. 31.7, p < 0.001; anxiety 53.5 vs. 33.7, p < 0.001) compared with assistants and attending gynecologists. Perceived stress and anxiety were positively correlated at both timepoints (r = 0.68, p < 0.001; r = 0.82, p < 0.001). CONCLUSIONS: When asked to reflect on stress experienced during surgery, our data show that stress during surgery is greater than anticipated for many surgical episodes. Self-reported stress symptoms commence prior to surgery and are more commonly reported by surgeons operating as primary surgeon and by those in training. Future research should focus on determinants of presurgical stress and examine when stressors become inhibitory to performance.


Assuntos
Laparoscopia , Cirurgiões , Feminino , Humanos , Ansiedade , Procedimentos Cirúrgicos em Ginecologia , Procedimentos Cirúrgicos Eletivos
2.
Aust N Z J Obstet Gynaecol ; 64(3): 264-268, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38180231

RESUMO

BACKGROUND: Australia's caesarean rate is higher than Organisation for Economic Co-operation and Development (OECD) average, and is rising. Vaginal birth after caesarean (VBAC) is safe for selected women. Midwifery continuity of care (CoC) is associated with higher rates of vaginal birth compared to other models; however, impacts on VBAC attempts and success are unknown. AIMS: The primary aim was to determine if there is a difference in achieving VBAC between CoC and non-CoC (NCoC) models. The secondary aim was to determine if there is a difference in the proportion of women attempting VBAC between these models. MATERIALS AND METHODS: Retrospective review of antenatal records and birthing data of all women who birthed in 2021 with one or more previous caesareans. Women were included if they had two or fewer caesareans. Women were excluded if contraindications to VBAC existed. RESULTS: There were 142/1109 (12.8%) women who had previous caesareans and were eligible to attempt VBAC. There were 47/109 (43.1%) women who attempted vaginal birth after one caesarean with 78.7% success. After one caesarean, women in CoC were more likely to achieve VBAC than NCoC (45.2% vs 26.1%; relative risk (RR) 1.76, 95% CI 1.04-3.00), although when stratified by private and midwifery CoC models, women in midwifery CoC models were more likely to be successful (private RR 0.69, 95% CI 0.23-2.07 vs midwifery RR 2.48, 95% CI 1.50-4.11). Women in CoC were more likely to attempt VBAC (54.7% vs 34.8%; RR 1.57, 95% CI 1.02-2.41), and receive counselling about VBAC (92.5% vs 62%; RR 1.48, 95% CI 1.41-3.11). CONCLUSION: CoC improves the rate of attempted and successful VBAC through several factors, including increased counselling and greater provision of birth choices.


Assuntos
Continuidade da Assistência ao Paciente , Tocologia , Nascimento Vaginal Após Cesárea , Humanos , Feminino , Nascimento Vaginal Após Cesárea/estatística & dados numéricos , Gravidez , Estudos Retrospectivos , Adulto , Austrália , Recesariana/estatística & dados numéricos
3.
BJOG ; 130(9): 1112-1119, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-36852512

RESUMO

OBJECTIVE: To compare rates of urinary retention and postoperative urinary tract infection between women with immediate versus women with delayed removal of indwelling catheter following benign non-hysterectomy gynaecological laparoscopic surgery. DESIGN: This randomised clinical trial was conducted between February 2012 and December 2019, with follow-up to 6 weeks. SETTING: Two university-affiliated teaching hospitals in Sydney, Australia. POPULATION: Study participants were 693 women aged 18 years or over, undergoing non-hysterectomy laparoscopy for benign gynaecological conditions, excluding pelvic floor or concomitant bowel surgery. METHODS: Three hundred and fifty-five participants were randomised to immediate removal of urinary catheter and 338 participants were randomised to delayed removal of urinary catheter. MAIN OUTCOME MEASURES: The co-primary outcomes were urinary retention and urinary tract infection. Secondary outcomes included hospital readmission, analgesia requirements, duration of hospitalisation and validated bladder function questionnaires. RESULTS: Urinary retention was higher after immediate compared with delayed removal of the urinary catheter (8.2% vs 4.2%, RR 1.8, 95% CI 1.0-3.0, p = 0.04). Although urinary tract infection was 7.2% following delayed removal of the urinary catheter and 4.7% following immediate removal of the urinary catheter, the difference was not statistically significant (RR 0.7, 95% CI 0.3-1.2, p = 0.2). CONCLUSIONS: There is an increased risk of urinary retention with the immediate compared with the delayed removal of the urinary catheter following benign non-hysterectomy gynaecological laparoscopic surgery. The difference in urinary tract infection was not significant. There is 1/12 risk of re-catheterisation after immediate urinary catheter removal. It is important to ensure that patients report normal voiding and emptying prior to discharge, to reduce the need for readmission for the management of urinary retention.


Assuntos
Laparoscopia , Retenção Urinária , Infecções Urinárias , Feminino , Humanos , Retenção Urinária/etiologia , Retenção Urinária/terapia , Cateterismo Urinário/efeitos adversos , Cateteres Urinários/efeitos adversos , Cateteres de Demora/efeitos adversos , Infecções Urinárias/epidemiologia , Infecções Urinárias/etiologia , Remoção de Dispositivo/efeitos adversos , Laparoscopia/efeitos adversos
4.
J Minim Invasive Gynecol ; 30(10): 841-849, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37379897

RESUMO

STUDY OBJECTIVE: To assess changes in biological measures of acute stress in surgeons during surgery in real-world settings DESIGN: A prospective cohort study. SETTING: A tertiary teaching hospital. PATIENTS: 8 consultant and 9 training gynecologists. INTERVENTION: A total of, 161 elective gynecologic surgeries of 3 procedures: laparoscopic hysterectomy, laparoscopic excision of endometriosis, or hysteroscopic myomectomy. MEASUREMENTS AND MAIN RESULTS: Changes in surgeons' biological measures of acute stress while undertaking elective surgery. Salivary cortisol, mean and maximum heart rate (HR), and indices of the HR variability were recorded before and during surgery. From baseline to during surgery over the cohort, salivary cortisol decreased from 4.1 nmol/L to 3.6 nmol/L (p = .03), maximum HR increased from 101.8 beats per min (bpm) to 106.5 bpm (p <.01), root mean square of standard deviation decreased from 51.1 ms to 39.0 ms (p <.01), and standard deviation of beat-to-beat variability decreased from 73.7 to 59.8 ms (p <.01). Analysis of individual changes in stress by participant-surgery event by paired data graphs reveal inconsistent direction of change in all measures of biological stress despite stratification by surgical experience, role in surgery, level of training, or type of surgery performed. CONCLUSION: This study measured biometric stress changes at both a group and individual level in real-world, live surgical settings. Individual changes have not previously been reported and the variable direction of stress change by participant-surgery episode identified in this study demonstrates a problematic interpretation of mean cohort findings previously reported. Results from this study suggest that either live surgery with tight environment control or surgical simulation studies may identify what, if any, biological measures of stress can predict acute stress reactions during surgery.

5.
JAMA ; 326(14): 1381-1389, 2021 10 12.
Artigo em Inglês | MEDLINE | ID: mdl-34636862

RESUMO

Importance: Postmenopausal vaginal symptoms are common and frequently detrimental to a woman's quality of life. Fractional carbon dioxide vaginal laser is increasingly offered as a treatment, but the efficacy remains unproven. Objective: To determine the efficacy of fractional carbon dioxide laser for treatment of vaginal symptoms associated with menopause. Design, Setting, and Participants: A double-blind, randomized, sham-controlled trial with 12-month follow-up was undertaken at a single tertiary referral hospital in Sydney, Australia. Enrollment commenced on September 19, 2016, with final follow-up on June 30, 2020. Participants were postmenopausal women with vaginal symptoms substantive enough to seek medical treatment. Of 232 participants approached, 85 were randomized. Interventions: Three treatments using a fractional microablative carbon dioxide laser system performed 4 to 8 weeks apart, with 43 women randomized to the laser group and 42 to the sham group. Main Outcomes and Measures: The co-primary outcomes were symptom severity assessed using a visual analog scale (VAS; range, 0-100; 0 indicates no symptoms and 100 indicates the most severe symptoms) and the Vulvovaginal Symptom Questionnaire (VSQ; range, 0-20; 0 indicates no symptoms and 20 indicates the most severe symptoms) at 12 months. The minimal clinically important difference was specified as a 50% decrease in both VAS and VSQ severity scores. There were 5 prespecified secondary outcomes, including quality of life (range, 0-100; higher scores indicate better quality of life), the Vaginal Health Index Score (range, 5-25; higher scores indicate better health), and vaginal histology (premenopausal or postmenopausal status). Results: Of 85 randomized participants (mean [SD] age, 57 [8] years), 78 (91.7%) completed the 12-month follow-up. From baseline to 12 months, there was no significant difference between the carbon dioxide laser group and the sham group in change in symptom severity (VAS score for overall vaginal symptoms: -17.2 vs -26.6; difference, 9.4 [95% CI, -28.6 to 47.5]; VAS score for the most severe symptom: -24.5 vs -20.4; difference -4.1 [95% CI, -32.5 to 24.3]; VSQ score: -3.1 vs -1.6; difference, -1.5 [95% CI, -5.9 to 3.0]). There were no significant differences between the laser and sham group in the mean quality of life score (6.3 vs 1.4; difference, 4.8 [95% CI, -3.9 to 13.5]) and Vaginal Health Index Score (0.9 vs 1.3; difference, -0.4 [95% CI, -4.3 to 3.6]) or in histological comparisons between laser and sham treatment groups. There were 16 adverse events in the laser group and 17 in the sham group, including vaginal pain/discomfort (44% vs 68%), spotting, discharge, and lower urinary tract symptoms. No severe adverse events were reported in either group. Conclusions and Relevance: Among women with postmenopausal vaginal symptoms, treatment with fractional carbon dioxide laser vs sham treatment did not significantly improve vaginal symptoms after 12 months. Trial Registration: Australian and New Zealand Clinical Trials Registry: ACTRN12616001403426.


Assuntos
Lasers de Gás/uso terapêutico , Terapia com Luz de Baixa Intensidade , Pós-Menopausa , Vagina/patologia , Doenças Vaginais/radioterapia , Atrofia/radioterapia , Método Duplo-Cego , Feminino , Humanos , Lasers de Gás/efeitos adversos , Terapia com Luz de Baixa Intensidade/efeitos adversos , Pessoa de Meia-Idade , Qualidade de Vida , Índice de Gravidade de Doença , Falha de Tratamento
6.
J Minim Invasive Gynecol ; 27(2): 419-432, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31712161

RESUMO

OBJECTIVE: To report on randomized controlled trials (RCTs) that examine the surgical treatment of endometriosis-associated pelvic pain and to highlight their strengths and weaknesses. DATA SOURCES: We performed a systematic review of English-language, full-text articles addressing the surgical management of pain symptoms associated with endometriosis. The terms endometriosis, pain, surgery, laparoscopy, plasma, and laser were used for searches in Cochrane, MEDLINE, EMBASE, and clinical trial databases. Additional studies were identified from references in electronically located articles. METHODS OF STUDY SELECTION: A literature search was conducted by 2 authors, and abstracts were independently screened for inclusion, with the resolution of any discrepancy by a third author. Randomized studies that reported pain before and after surgery were eligible for inclusion. Supporting data from nonrandomized trials were used for discussion. The Cochrane risk-of-bias assessment was performed on included studies. TABULATION, INTEGRATION, AND RESULTS: Search results for available articles from 1996 to October 2019 revealed 594 potential studies, with 20 studies meeting the final inclusion criteria. Comparative studies of surgery vs no surgery for an effect on pain, surgical approach, the effect of different locations of disease on pain, nerve-dividing techniques for pain, and nerve-sparing effects for pain were studied. RCTs reported a substantial reduction in pain compared with no surgery in up to 80% of women; however, up to a third of women in these studies reported a placebo response. There was no evidence of a difference in pain reduction with the mode of surgery (laparoscopy, laparotomy, or robot-assisted laparoscopy). There is limited evidence stating that excision is superior to ablative surgery; however, there are confounders in the reporting of disease location and depth and the pain symptoms most affected. We need to reconsider the hypothesis that disc excision results in fewer complications and has superior outcomes to those of segmental resection in light of the first RCT on this subject. Nerve-dividing surgery for pain has been demonstrated to be of no value for uterosacral nerve ablation and/or division and of limited (if any) value for presacral neurectomy. CONCLUSION: Although surgical RCTs have always been difficult to undertake, there are 16 RCTs on endometriosis-associated pain. Ethical considerations, the equipoise of surgeons and participants, and follow-up duration are important parameters in establishing RCTs. In addition, we must be willing to accept and adopt the evidence when it does demonstrate a particular outcome, such as the fact that surgical uterosacral nerve disruption does not improve pain or that disc excision does not substantially reduce complications compared with segmental resection for bowel disease, as suggested by previous nonrandomized studies. If we accept that a well-conducted RCT provides best-quality evidence, then we should at least be open to the possibility that our long-held views may be challenged and changed with new science in our practice.


Assuntos
Endometriose/cirurgia , Procedimentos Cirúrgicos em Ginecologia , Dor Pélvica/cirurgia , Doenças Peritoneais/cirurgia , Ensaios Clínicos Controlados Aleatórios como Assunto , Adulto , Endometriose/complicações , Feminino , Procedimentos Cirúrgicos em Ginecologia/efeitos adversos , Procedimentos Cirúrgicos em Ginecologia/métodos , Procedimentos Cirúrgicos em Ginecologia/estatística & dados numéricos , Humanos , Laparoscopia/efeitos adversos , Laparoscopia/métodos , Laparoscopia/estatística & dados numéricos , Dor Pélvica/etiologia , Doenças Peritoneais/complicações , Ensaios Clínicos Controlados Aleatórios como Assunto/normas , Ensaios Clínicos Controlados Aleatórios como Assunto/estatística & dados numéricos , Projetos de Pesquisa
7.
J Minim Invasive Gynecol ; 25(2): 209-217, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28755995

RESUMO

Uterine septa are a class of müllerian duct anomaly that, similar to other classes, are associated with poor reproductive outcomes; however, they are unique because these poor outcomes, particularly recurrent pregnancy loss, may be responsive to surgical correction. The current evidence regarding septoplasty is difficult to interpret because the definitions of a uterine septum, methods to diagnose it, and hysteroscopic techniques used for treatment are variable and generally of poor to moderate quality. Robust data on outcomes, particularly live births, after septoplasty are not available at this time. This review aims to examine the evidence on this contentious issue. A search of the literature was conducted using the MEDLINE, Embase, and Cochrane databases from 2002 to present with included articles reporting on clinical and/or imaging diagnosis of a uterine septum, operative techniques for uterine septoplasty, or clinical outcomes for women with uterine septa. The initial search revealed 4997 potentially relevant articles with 36 full-text articles included after the removal of nonrelevant titles, including 16 diagnostic studies, 17 surgical studies, and 3 studies on clinical outcomes. Where access to 3-dimensional transvaginal ultrasound or magnetic resonance imaging exists, these imaging modalities offer a highly sensitive and specific method of diagnosing a uterine septum without invasive diagnosis although this is operator dependent. Despite hysteroscopic septoplasty being described for over 40 years, there remains a lack of high-quality data to support hysteroscopic septoplasty and which women would most benefit from the procedure. There is no evidence for pre- or postoperative treatments nor has a single surgical approach been identified as superior than another although an important end point of live birth rates is largely unreported in these trials. Although several classification systems have been described, the diagnostic categorization of septal variants has limited a meaningful approach to this issue in both the clinical and research setting.


Assuntos
Procedimentos Cirúrgicos em Ginecologia/métodos , Ductos Paramesonéfricos/anormalidades , Ductos Paramesonéfricos/cirurgia , Doenças Uterinas , Feminino , Humanos , Histeroscopia/métodos , Gravidez , Resultado da Gravidez , Doenças Uterinas/diagnóstico , Doenças Uterinas/cirurgia
8.
Aust N Z J Obstet Gynaecol ; 58(2): 148-162, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29067688

RESUMO

Following menopause, up to 49% of women will experience genitourinary symptoms such as vaginal itching, dryness, dyspareunia and incontinence as a result of oestrogen deficiency. Treatments such as vaginal lubricants and moisturisers only temporarily relieve symptoms, while local oestrogen treatments are often unacceptable or unsafe for many women. Recently, a novel laser treatment has been proposed as a non-invasive, long-term solution to vulvo-vaginal and urinary symptoms. While preliminary histological results have been promising, its therapeutic, clinical effect has yet to be determined. However, despite the scarcity of evidence for its safety and long-term benefit, laser treatments are widely marketed for a range of genitourinary symptoms, with high uptake by both clinicians and women alike. This review aims to examine the evidence for laser treatments to the vulvo-vagina and to evaluate its safety and efficacy. Our results include 17 studies investigating the effect of laser therapy for vulvo-vaginal symptoms, seven for its effects on urinary incontinence and four for histology. These are limited to non-randomised, observational data with small sample sizes between 15 to 175 women and follow-up duration from none to two years. As such, strong evidence for laser efficacy and safety is limited and warrants more robust, placebo-controlled, randomised trials before widespread implementation.


Assuntos
Terapia a Laser/efeitos adversos , Pós-Menopausa , Doenças Vaginais/cirurgia , Doenças da Vulva/cirurgia , Feminino , Humanos
9.
Aust N Z J Obstet Gynaecol ; 58(5): 570-575, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29355897

RESUMO

BACKGROUND: Intrauterine hysteroscopic morcellators have been studied as an alternative method for removing submucosal leiomyomas. AIMS: To assess the long-term efficacy of hysteroscopic morcellation of submucosal leiomyomas in women with abnormal uterine bleeding (AUB). MATERIALS AND METHODS: We conducted a prospective cohort study including all women with AUB who underwent a hysteroscopic resection with mechanical morcellation of a benign submucosal leiomyoma confirmed at histopathology. Need for further surgery, patient satisfaction, symptom resolution and post-operative complications were documented by direct patient contact after a minimum of six months of follow-up. RESULTS: A total of 73 women were included in the study with a mean length of follow-up of 32 ± 13 months. Mean total size of pathology at the time of index surgery was of 42 ± 20 mm. A total of 9/73 (12%) women required subsequent hysterectomy and 20/73 (27%) any subsequent related surgery (operative hysteroscopy, abdominal myomectomy or hysterectomy) with the estimated three-year cumulative incidence being 30 ± 6%. Satisfaction rate of participants was 84%. In multivariate Cox proportional analyses, only a total size of pathology of 50 mm or more was found to be significantly associated with the risk of requiring further surgical procedures (hazard ratio = 2.9, P = 0.02). CONCLUSIONS: Hysteroscopic morcellation of submucosal leiomyomas is an effective method to manage women with AUB, although women with larger pathology have an increased risk of requiring subsequent surgical procedures.


Assuntos
Histeroscopia , Leiomioma/cirurgia , Morcelação , Reoperação , Neoplasias Uterinas/cirurgia , Adulto , Idoso , Feminino , Seguimentos , Humanos , Histerectomia , Histeroscopia/efeitos adversos , Leiomioma/complicações , Leiomioma/patologia , Pessoa de Meia-Idade , Morcelação/efeitos adversos , Mucosa , Satisfação do Paciente , Estudos Prospectivos , Carga Tumoral , Hemorragia Uterina/etiologia , Neoplasias Uterinas/complicações , Neoplasias Uterinas/patologia
10.
Int Urogynecol J ; 27(9): 1367-73, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26965411

RESUMO

INTRODUCTION AND HYPOTHESIS: The classic triad of dry eyes, mouth and vagina is known to most gynaecologists as pathognomonic of Sjögren's syndrome, but rheumatologists seldom consider vaginal symptoms. Our hypothesis was that women with Sjögren's syndrome would have an increased likelihood of postoperative voiding dysfunction, severe vaginal stenosis or poor response to anticholinergics compared with the general urogynaecology patient. METHODS: All patients with Sjögren's syndrome were prospectively recorded from July 2007 to June 2015. Presenting complaint, pelvic examination findings, previous/subsequent pelvic surgery, voiding dysfunction and response to anticholinergics were noted. The denominator, all new urogynaecology patients, was prospectively recorded. RESULTS: Fifteen patients were identified over 8 years (0.5 % of 2794 new presentations). Of the seven patients who had previously undergone surgery elsewhere, all had demonstrable pelvic tissue fibrosis; five had such severe fibrosis that no speculum could be passed. Anticholinergic medications were completely intolerable in 10/11 (91 %) women, and severe postoperative voiding dysfunction occurred in 6/9 (67 %) women. Only 2/15 (13 %) women were unaffected by fibrosis, postoperative voiding dysfunction or intolerance to anticholinergics. CONCLUSIONS: This audit demonstrates a substantial risk of vaginal stenosis, postoperative voiding dysfunction or severe intolerance to anticholinergics in women with Sjögren's syndrome.


Assuntos
Distúrbios do Assoalho Pélvico/etiologia , Diafragma da Pelve/cirurgia , Complicações Pós-Operatórias/etiologia , Síndrome de Sjogren/complicações , Idoso , Antagonistas Colinérgicos/efeitos adversos , Constrição Patológica/etiologia , Tolerância a Medicamentos , Feminino , Humanos , Auditoria Médica , Pessoa de Meia-Idade , Diafragma da Pelve/fisiopatologia , Distúrbios do Assoalho Pélvico/terapia , Estudos Prospectivos , Fatores de Risco , Síndrome de Sjogren/fisiopatologia , Transtornos Urinários/etiologia , Vagina/cirurgia
12.
Cochrane Database Syst Rev ; (10): CD009701, 2014 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-25300173

RESUMO

BACKGROUND: When women require induction of labour, oxytocin is the most common agent used, delivered by an intravenous infusion titrated to uterine contraction strength and frequency. There is debate over the optimum dose regimen and how it impacts on maternal and fetal outcomes, particularly induction to birth interval, mode of birth, and rates of hyperstimulation. Current induction of labour regimens include both high- and low-dose regimens and are delivered by either continuous or pulsed infusions, with both linear and non-linear incremental increases in oxytocin dose. Whilst low-dose protocols bring on contractions safely, their potentially slow induction to birth interval may increase the chance of fetal infection and chorioamnionitis. Conversely, high-dose protocols may cause undue uterine hyperstimulation and fetal distress. OBJECTIVES: To determine the effectiveness and safety of high- versus low-dose oxytocin for induction of labour at term SEARCH METHODS: We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (31 August 2014) and the reference lists of relevant papers. SELECTION CRITERIA: Randomised controlled trials and quasi-randomised controlled trials that compared oxytocin protocol for induction of labour for women at term, where high-dose oxytocin is at least 100 mU oxytocin in the first 40 minutes, with increments delivering at least 600 mU in the first two hours, compared with low-dose oxytocin, defined as less than 100 mU oxytocin in the first 40 minutes, and increments delivering less than 600 mU total in the first two hours. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed study eligibility, extracted data and assessed the risk of bias of included studies. Data were checked for accuracy. MAIN RESULTS: We have included nine trials, involving 2391 women and their babies in this review. Trials were at a moderate to high risk of bias overall.Results of primary outcomes revealed no significant differences in rates of vaginal delivery not achieved within 24 hours (risk ratio (RR) 0.94, 95% confidence interval (CI) 0.78 to 1.14, two trials, 1339 women) or caesarean section (RR 0.96, 95% CI 0.81 to 1.14, eight trials, 2023 women). There was no difference in serious maternal morbidity or death (RR 1.24, 95% CI 0.55 to 2.82, one trial, 523 women), and no difference in serious neonatal morbidity or perinatal death (RR 0.84, 95% CI 0.23 to 3.12, one trial, 781 infants). Finally, no trials reported on the number of women who had uterine hyperstimulation with fetal heart rate changes.Results of secondary outcomes revealed no difference between time from induction to delivery (mean difference (MD) -0.90 hours, 95% CI -2.28 to +0.49 hours; five studies), uterine rupture (RR 3.10, 95% CI 0.50 to 19.33; three trials), epidural analgesia (RR 1.03, 95% CI 0.89 to 1.18; two trials), instrumental birth (RR 1.22, 95% CI 0.88 to 1.66; three trials), Apgar less than seven at five minutes (RR 1.25, 95% CI 0.77 to 2.01, five trials), perinatal death (RR 0.84, 95% CI 0.23 to 3.12; two trials), postpartum haemorrhage (RR 1.08, 95% CI 0.87 to 1.34; five trials), or endometritis (RR 1.35, 95% CI 0.53 to 3.43; three trials). Removal of high bias studies reveals a significant reduction of induction to delivery interval (MD -1.94 hours, 95% CI -0.99 to -2.89 hours, 489 women). A significant increase in hyperstimulation without specifying fetal heart rate changes was found in the high-dose group (RR 1.86, 95% CI 1.55 to 2.25).No other secondary outcomes were reported: unchanged/unfavourable cervix after 12 to 24 hours, meconium-stained liquor, neonatal intensive care unit admission, neonatal encephalopathy, disability in childhood, other maternal side-effects (nausea, vomiting, diarrhoea), maternal antibiotic use, maternal satisfaction, neonatal infection and neonatal antibiotic use. AUTHORS' CONCLUSIONS: The findings of our review do not provide evidence that high-dose oxytocin increases either vaginal delivery within 24 hours or the caesarean section rate. There is no significant decrease in induction to delivery time at meta-analysis but these results may be confounded by poor quality trials. High-dose oxytocin was shown to increase the rate of uterine hyperstimulation but the effects of this are not clear. The conclusions here are specific to the definitions used in this review. Further trials evaluating the effects of high-dose regimens of oxytocin for induction of labour should consider all important maternal and infant outcomes.


Assuntos
Trabalho de Parto Induzido/métodos , Ocitócicos/administração & dosagem , Ocitocina/administração & dosagem , Nascimento a Termo , Feminino , Humanos , Ocitócicos/efeitos adversos , Ocitocina/efeitos adversos , Gravidez , Ensaios Clínicos Controlados Aleatórios como Assunto
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