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Dive into the research topics where Annika Strandell is active.

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Featured researches published by Annika Strandell.


Fertility and Sterility | 1999

Risk factors for ectopic pregnancy in assisted reproduction

Annika Strandell; Jane Thorburn; L. Hamberger

OBJECTIVE To identify risk factors for ectopic pregnancy (EP) after IVF-ET. DESIGN Retrospective cohort study. SETTING In vitro fertilization clinic at a university hospital. PATIENT(S) A total of 725 women who conceived after IVF were studied with regard to background factors, indications for IVF, and factors related to the IVF procedure through review of their medical charts. The rate of EP was 4%, corresponding with 29 EPs, of which 2 were heterotopic. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Pregnancy outcome, defined as intrauterine pregnancy or EP. Background factors, indications for IVF, and factors related to the IVF procedure were analyzed for possible correlation with the outcome of EP. Risk factors for EP were identified by logistic regression analysis. RESULT(S) Tubal factor infertility, various previous abdominal surgeries, previous EP or pelvic infection, presence of a hydrosalpinx or fibroid, and type of transfer catheter used showed a positive correlation with EP as outcome. Logistic regression analysis identified two factors with predictive power: tubal factor infertility and previous myomectomy. CONCLUSION(S) Tubal factor infertility was the most prominent risk factor for EP after IVF. Previous myomectomy appeared to be another important risk factor, but this is a new finding that needs to be confirmed by further study.


The Lancet | 1995

A cost-effectiveness study of a randomised trial of laparoscopy versus laparotomy for ectopic pregnancy

Darryl T. Gray; Jane Thorburn; Annika Strandell; Per Lundorff; Bo Lindblom

We compared the cost-effectiveness of therapeutic laparoscopy and open laparotomy for treatment of laparoscopically diagnosed ectopic pregnancy. Clinical outcomes of ectopic pregnancy treatment were based on results of a randomised trial done between 1987 and 1989 at Sahlgrenska University Hospital (Göteborg, Sweden). We estimated costs for inpatient and follow-up care of ectopic pregnancy by the two methods. Observed resource use (eg, procedure duration) was multiplied by 1992 estimates of resource unit cost (eg, cost per minute of laparoscopy time), based on detailed internal cost accounting data from Huddinge University Hospital. By specified criteria, the initial procedure eliminated trophoblastic activity without major complications in 81% (95% CI: 68-90) of 52 laparoscopy patients, versus 95% (85-99) of 57 laparotomy patients. Residual trophoblast or complications were successfully treated in all remaining patients. Mean simulated costs (standard error) for the overall laparoscopy strategy were 28,058 (1780) Swedish kronor versus 32,699 (1080) kronor for laparotomy (p = 0.03). In the baseline simulation and most sensitivity analyses, laparoscopy produced final outcomes equivalent to those of laparotomy at lower costs. As laparoscopic outcomes improve, this newer approach should become increasingly preferable.


The Lancet | 2014

Salpingotomy versus salpingectomy in women with tubal pregnancy (ESEP study): an open-label, multicentre, randomised controlled trial.

Femke Mol; Norah M. van Mello; Annika Strandell; Karin Strandell; D. Jurkovic; Jackie Ross; Kurt T. Barnhart; T.M. Yalcinkaya; Harold R. Verhoeve; Giuseppe C.M. Graziosi; Carolien A. M. Koks; Ingmar Klinte; Lars Hogström; Ineke C. A. H. Janssen; Harry Kragt; Annemieke Hoek; Trudy C.M. Trimbos-Kemper; Frank J. Broekmans; Wim N.P. Willemsen; Willem M. Ankum; Ben W. J. Mol; Madelon van Wely; Fulco van der Veen; Petra J. Hajenius

BACKGROUND Tubal ectopic pregnancy can be surgically treated by salpingectomy, in which the affected Fallopian tube is removed, or salpingotomy, in which the tube is preserved. Despite potentially increased risks of persistent trophoblast and repeat ectopic pregnancy, salpingotomy is often preferred over salpingectomy because the preservation of both tubes is assumed to offer favourable fertility prospects, although little evidence exists to support this assumption. We aimed to assess whether salpingotomy would improve rates of ongoing pregnancy by natural conception compared with salpingectomy. METHODS In this open-label, multicentre, international, randomised controlled trial, women aged 18 years and older with a laparoscopically confirmed tubal pregnancy and a healthy contralateral tube were randomly assigned via a central internet-based randomisation program to receive salpingotomy or salpingectomy. The primary outcome was ongoing pregnancy by natural conception. Differences in cumulative ongoing pregnancy rates were expressed as a fecundity rate ratio with 95% CI, calculated by Cox proportional-hazards analysis with a time horizon of 36 months. Secondary outcomes were persistent trophoblast and repeat ectopic pregnancy (expressed as relative risks [RRs] with 95% CIs) and ongoing pregnancy after ovulation induction, intrauterine insemination, or IVF. The researchers who collected data for fertility outcomes were masked to the assigned intervention, but patients and the investigators who analysed the data were not. All endpoints were analysed by intention to treat. We also did a (non-prespecified) meta-analysis that included the findings from the present trial. This trial is registered, number ISRCTN37002267. FINDINGS 446 women were randomly assigned between Sept 24, 2004, and Nov 29, 2011, with 215 allocated to salpingotomy and 231 to salpingectomy. Follow-up was discontinued on Feb 1, 2013. The cumulative ongoing pregnancy rate was 60·7% after salpingotomy and 56·2% after salpingectomy (fecundity rate ratio 1·06, 95% CI 0·81-1·38; log-rank p=0·678). Persistent trophoblast occurred more frequently in the salpingotomy group than in the salpingectomy group (14 [7%] vs 1 [<1%]; RR 15·0, 2·0-113·4). Repeat ectopic pregnancy occurred in 18 women (8%) in the salpingotomy group and 12 (5%) women in the salpingectomy group (RR 1·6, 0·8-3·3). The number of ongoing pregnancies after ovulation induction, intrauterine insemination, or IVF did not differ significantly between the groups. 43 (20%) women in the salpingotomy group were converted to salpingectomy during the initial surgery because of persistent tubal bleeding. Our meta-analysis, which included our own results and those of one other study, substantiated the results of the trial. INTERPRETATION In women with a tubal pregnancy and a healthy contralateral tube, salpingotomy does not significantly improve fertility prospects compared with salpingectomy. FUNDING Netherlands Organisation for Health Research and Development (ZonMW), Region Västra Götaland Health & Medical Care Committee.


Human Reproduction Update | 2011

Are patient characteristics associated with the accuracy of hysterosalpingography in diagnosing tubal pathology? An individual patient data meta-analysis

Kimiko A. Broeze; Brent C. Opmeer; N. Van Geloven; Sjors F. P. J. Coppus; John A. Collins; J. E. Den Hartog; P.J.Q. van der Linden; P. Marianowski; Ernest Hung Yu Ng; J.W. van der Steeg; P. Steures; Annika Strandell; F. van der Veen; Ben W. J. Mol

BACKGROUND Conventional meta-analysis has estimated the sensitivity and specificity of hysterosalpingography (HSG) to be 65% and 83%. The impact of patient characteristics on the accuracy of HSG is unknown. The aim of this study was to assess by individual patient data meta-analysis whether the accuracy of HSG is associated with different patient characteristics. METHODS We approached authors of primary studies reporting on the accuracy of HSG using findings at laparoscopy as the reference. We assessed whether patient characteristics such as female age, duration of subfertility and a clinical history without risk factors for tubal pathology were associated with the accuracy of HSG, using a random intercept logistic regression model. RESULTS We acquired data of seven primary studies containing data of 4521 women. Pooled sensitivity and specificity of HSG were 53% and 87% for any tubal pathology and 46% and 95% for bilateral tubal pathology. In women without risk factors, the sensitivity of HSG was 38% for any tubal pathology, compared with 61% in women with risk factors (P = 0.005). For bilateral tubal pathology, these rates were 13% versus 47% (P = 0.01). For bilateral tubal pathology, the sensitivity of HSG decreased with age [factor 0.93 per year (P = 0.05)]. The specificity of HSG was very stable across all subgroups. CONCLUSIONS The accuracy of HSG in detecting tubal pathology was similar in all subgroups, except for women without risk factors in whom sensitivity was lower, possibly due to false-positive results at laparoscopy. HSG is a useful tubal patency screening test for all infertile couples.


Journal of Assisted Reproduction and Genetics | 2004

The Presence of Cytokines and Growth Factors in Hydrosalpingeal Fluid

Annika Strandell; Jane Thorburn; Ann Wallin

AbstractPurpose:To examine the presence of cytokines and growth factors in hydrosalpingeal fluid. Methods: Eighteen hydrosalpingeal fluids were compared with 15 follicular fluids and serum samples regarding the presence of interleukin-8 (IL-8), IL-12, IL-1α, epidermal growth factor (EGF), granulocyte macrophage colony stimulating factor (GM-CSF), leukemia inhibitory factor (LIF), tumor necrosis factor-α (TNFα), interferon-γ (IFNγ), and transforming growth factor-β2 (TGFβ2). Results: IL-8 and EGF were detected in all the hydrosalpinx samples. IL-8, IL-12, IL-1α, TNFα, TGFβ 2, GM-CSF, and LIF were detected to a significantly larger extent in hydrosalpingeal than follicular fluids (p < 0.01). The same cytokines, with the exception of IL-8, TGFβ 2, and LIF, were also more frequently present in comparison with serum. Conclusion: The abundant presence of cytokines in hydrosalpingeal fluid suggests an increased expression from the tubal epithelium. Whether high concentrations have a negative influence on embryo development and implantation needs further investigation.


British Journal of Clinical Pharmacology | 2014

Medication reviews for nursing home residents to reduce mortality and hospitalization: systematic review and meta-analysis

Susanna M. Wallerstedt; Jenny M. Kindblom; Karin Nylén; Ola Samuelsson; Annika Strandell

Medication reviews by a third party have been introduced as a method to improve drug treatment in older people. We assessed whether this intervention reduces mortality and hospitalization for nursing home residents.


Human Reproduction | 2009

Influence of HyCoSy on spontaneous pregnancy: a randomized controlled trial

L. Lindborg; Jane Thorburn; Christina Bergh; Annika Strandell

BACKGROUND The aim of the study was to test whether the use of sonography contrast could enhance the chance of spontaneous clinical pregnancy in women undergoing subfertility investigation. METHODS Couples with at least 1 year of infertility who were scheduled for a consultation including a hysterosalpingo contrast sonography (HyCoSy) were invited to participate in the study. We compared flushing with water-soluble contrast medium (WSCM) versus no flushing. Randomization sequence was computer generated, stratified for age and group allocation was concealed. Primary outcome was clinical pregnancy defined as a sonographically visible fetal sac, detected within 6 months from randomization. Secondary outcomes were spontaneous miscarriage and birth. Exclusion criteria were female age >or=40 years, severe male infertility, previously known severe tubal infertility and suspected anovulation. RESULTS The mean age of the study population (n = 334) was 31.9 years. Duration of infertility was 2.1 years. The clinical pregnancy rate was 29.2% in the HyCoSy group and 26.5% in the non-flushing group, the difference being 2.7% (95% confidence interval -6.9 to 12.3%, P = 0.63). CONCLUSION The clinical impression of an enhanced pregnancy rate after performing HyCoSy could not be confirmed. Tubal investigation with sonography using water-soluble contrast has a function as a diagnostic procedure but not in terms of increasing pregnancy rates in subfertile patients. TRIAL REGISTRATION NUMBER ISRCTN20715945.


Acta Obstetricia et Gynecologica Scandinavica | 1995

Background factors and scoring systems in relation to pregnancy outcome after fertility surgery

Annika Strandell; Inger Bryman; Per Olof Janson; Jane Thorburn

Background. A study was initiated to identify background factors, clinical features and pre‐operative scoring systems of importance for future selection of patients suitable for fertility surgery.


Journal of Dental Research | 2016

Psychological Interventions for Poor Oral Health A Systematic Review

H. Werner; Magnus Hakeberg; L. Dahlström; M. Eriksson; P. Sjögren; Annika Strandell; Therese Svanberg; Svensson L; U. Wide Boman

The aim of this systematic review and meta-analysis was to study the effectiveness of psychological interventions in adults and adolescents with poor oral health. The review follows the PRISMA guidelines for systematic reviews. The PICO format (population, intervention, comparison, and outcome) was used to define eligible studies. The populations were adults or adolescents (≥13 y of age and independent of others) with poor oral health (defined as dental caries, periodontal disease, and/or peri-implantitis). The interventions were psychological and/or behavioral models and theories, in comparison with traditional oral health education/information. The primary outcomes were dental caries, periodontitis, gingivitis, and peri-implantitis. Secondary outcomes were dental plaque, oral health–related behavior, health-related quality of life, health beliefs and attitudes, self-perceived oral health, and complications/risks. The systematic literature search identified 846 articles in December 2013 and 378 articles in July 2015. In total, 11 articles on 9 randomized controlled trials were found to meet the inclusion criteria. These reported on adults with periodontal disease, and several used motivational interviewing (MI) as their mode of intervention. The CONSORT guidelines and the GRADE approach were used for study appraisal and rating of evidence. The meta-analysis showed no statistically significant differences in gingivitis or plaque presence. In addition, a meta-analysis on MI compared with education/information found no statistically significant differences in gingivitis presence. Only 1 meta-analysis—on psychological interventions versus education/information regarding the plaque index—showed a small but statistically significant difference. There were also statistically significant differences reported in favor of psychological interventions in oral health behavior and self-efficacy in toothbrushing. However, the clinical relevance of these differences is difficult to estimate. The certainty of evidence was low. Future research needs to address several methodological issues and not only study adults with periodontal disease but also adolescents and patients with dental caries and peri-implantitis.


Acta Obstetricia et Gynecologica Scandinavica | 2003

Fallopian tube sperm perfusion: the impact of sperm count and morphology on pregnancy rates

Annika Strandell; Christina Bergh; Brita Söderlund; Kersti Lundin; Lars Nilsson

Background and objective.  To evaluate the effect of changed criteria for sperm count and morphology when performing fallopian tube sperm perfusion (FSP) in unexplained infertility.

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Christina Bergh

Sahlgrenska University Hospital

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Jane Thorburn

Sahlgrenska University Hospital

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Ola Samuelsson

University of Gothenburg

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L. Hamberger

Sahlgrenska University Hospital

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Therese Svanberg

Sahlgrenska University Hospital

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Femke Mol

University of Amsterdam

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Annemieke Hoek

University Medical Center Groningen

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