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Systematic reviews of observational studies of Risk of Thrombosis and Bleeding in General and Gynecologic Surgery (ROTBIGGS): introduction and methodology

Kivelä Antti J.; Beilmann-Lehtonen Ines; Tähtinen Riikka M.; Singh Tino; Ratnayake Chathura B. B.; Yao Liang; Craigie Samantha; Lee Yung; Aro Karoliina M.; Xiao Yingqi; Sallinen Ville J.; Pandanaboyana Sanjay; Luomaranta Anna L.; Karanicolas Paul J.; Mattila Anne K.; Couban Rachel J.; Cartwright Rufus; Blanker Marco H.; Lavikainen Lauri I; Najafabadi Borna Tadayon; Kalliala Ilkka E. J.; Pourjamal Negar; Vernooij Robin W. M.; Ahopelto Kaisa; Korhonen Tapio; Gomaa Huda A.; Aaltonen Riikka L.; Tikkinen Kari A. O.; Izett-Kay Matthew L.; Haukka Jari; Wang Yuting; Guyatt Gordon H.; Khamani Nadina; Nykänen Taina P.; Garcia-Perdomo Herney A.; Raudasoja Aleksi R.; Cardenas Jovita L.; Nysten Carolina; Karjalainen Päivi K.; Ge Fang Zhou; Galambosi Päivi J.; Oksjoki Sanna M.; Joronen Kirsi M.; Kilpeläinen Tuomas P.; Lampela Hanna; Huang Linglong

Systematic reviews of observational studies of Risk of Thrombosis and Bleeding in General and Gynecologic Surgery (ROTBIGGS): introduction and methodology

Kivelä Antti J.
Beilmann-Lehtonen Ines
Tähtinen Riikka M.
Singh Tino
Ratnayake Chathura B. B.
Yao Liang
Craigie Samantha
Lee Yung
Aro Karoliina M.
Xiao Yingqi
Sallinen Ville J.
Pandanaboyana Sanjay
Luomaranta Anna L.
Karanicolas Paul J.
Mattila Anne K.
Couban Rachel J.
Cartwright Rufus
Blanker Marco H.
Lavikainen Lauri I
Najafabadi Borna Tadayon
Kalliala Ilkka E. J.
Pourjamal Negar
Vernooij Robin W. M.
Ahopelto Kaisa
Korhonen Tapio
Gomaa Huda A.
Aaltonen Riikka L.
Tikkinen Kari A. O.
Izett-Kay Matthew L.
Haukka Jari
Wang Yuting
Guyatt Gordon H.
Khamani Nadina
Nykänen Taina P.
Garcia-Perdomo Herney A.
Raudasoja Aleksi R.
Cardenas Jovita L.
Nysten Carolina
Karjalainen Päivi K.
Ge Fang Zhou
Galambosi Päivi J.
Oksjoki Sanna M.
Joronen Kirsi M.
Kilpeläinen Tuomas P.
Lampela Hanna
Huang Linglong
Katso/Avaa
Publisher´s pdf (1.124Mb)
Lataukset: 

BMC
doi:10.1186/s13643-021-01814-2
URI
https://systematicreviewsjournal.biomedcentral.com/articles/10.1186/s13643-021-01814-2
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Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021120158368
Tiivistelmä

Background: Venous thromboembolism (VTE) and bleeding are serious and potentially fatal complications of surgical procedures. Pharmacological thromboprophylaxis decreases the risk of VTE but increases the risk of major post-operative bleeding. The decision to use pharmacologic prophylaxis therefore represents a trade-off that critically depends on the incidence of VTE and bleeding in the absence of prophylaxis. These baseline risks vary widely between procedures, but their magnitude is uncertain. Systematic reviews addressing baseline risks are scarce, needed, and require innovations in methodology. Indeed, systematic summaries of these baseline risk estimates exist neither in general nor gynecologic surgery. We will fill this knowledge gap by performing a series of systematic reviews and meta-analyses of the procedure-specific and patient risk factor stratified risk estimates in general and gynecologic surgeries.

Methods: We will perform comprehensive literature searches for observational studies in general and gynecologic surgery reporting symptomatic VTE or bleeding estimates. Pairs of methodologically trained reviewers will independently assess the studies for eligibility, evaluate the risk of bias by using an instrument developed for this review, and extract data. We will perform meta-analyses and modeling studies to adjust the reported risk estimates for the use of thromboprophylaxis and length of follow up. We will derive the estimates of risk from the median estimates of studies rated at the lowest risk of bias. The primary outcomes are the risk estimates of symptomatic VTE and major bleeding at 4 weeks post-operatively for each procedure stratified by patient risk factors. We will apply the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach to rate evidence certainty.

Discussion: This series of systematic reviews, modeling studies, and meta-analyses will inform clinicians and patients regarding the trade-off between VTE prevention and bleeding in general and gynecologic surgeries. Our work advances the standards in systematic reviews of surgical complications, including assessment of risk of bias, criteria for arriving at the best estimates of risk (including modeling of the timing of events and dealing with suboptimal data reporting), dealing with subgroups at higher and lower risk of bias, and use of the GRADE approach.

Systematic review registration: PROSPERO CRD42021234119

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