Evidence map›Paper›PMID 31791362›Full record

SynthesisJournal of orthopaedic surgery and research2019

Is deliberate hypotension a safe technique for orthopedic surgery?: a systematic review and meta-analysis of parallel randomized controlled trials.

Jia Jiang, Ran Zhou, Bo Li, Fushan Xue

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of orthopaedic surgery and research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed.

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  8. Quantile regression-based prediction of intraoperative blood loss in patients with spinal metastases: model development and validation.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Jia JiangDepartment of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
Ran ZhouDepartment of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
Bo LiBeijing Hospital of Traditional Chinese Medicine, Affiliated with Capital Medical University, Beijing Institute of Traditional Chinese Medicine, Beijing, 100010, China.
Fushan XueDepartment of Anesthesiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China. xuefushan@aliyun.com.ORCID http://orcid.org/0000-0002-1028-6036

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDeliberate hypotension has been shown to reduce the intraoperative bleeding and the need for allogeneic blood transfusion, and improve the surgical field, but there is still controversy on its clinical safety. This systematic review was designed to assess the safety and benefits of deliberate hypotension for orthopedic surgery.

methodsThe review met the requirements of the PRISMA guidelines. The Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, CINAHL, ISI Web of Science, ScienceDirect, and four Chinese databases (China National Knowledge Infrastructure, Wanfang, vip citation database, and updated version of China Biology Medicine disc from January 1, 2000 to January 1, 2019) were searched. All parallel randomized controlled trials comparing the effects of using deliberate hypotension with not using deliberate hypotension on clinical outcomes of patients undergoing orthopedic surgery were selected. The primary outcome was overall mortality. The secondary outcomes were the intraoperative blood loss, blood transfusion volume, and serious adverse postoperative events.

resultsA total of 30 studies with 36 comparisons (1454 participants) were included in meta-analysis. Two studies with 120 participants reported overall mortality and the result was zero (low-quality evidence). The use of deliberate hypotension reduced the intraoperative blood loss (mean difference, - 376.7; 95% CI - 428.1 to - 325.3; I

conclusionsBased on the available evidence, it is still unclear whether or not deliberate hypotension is a safe technique for orthopedic surgery due to limited studies with very small sample size, though it may decrease the intraoperative blood loss and blood transfusion volume irrespective of age groups, controlled mean artery pressure levels, types of surgeries, hypotensive methods, or different combinations of other blood conservation strategies.

trial registrationPROSPERO CRD42016045480.

Indexed as

Blood Loss, SurgicalBlood TransfusionHumansHypotensionOrthopedic ProceduresRandomized Controlled Trials as TopicDeliberate hypotensionMeta-analysisOrthopedic surgeryRandomized controlled trial

Identifiers

PMID31791362
PMCPMC6889611

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.