Evidence map›Paper›PMID 38384164›Full record

ArticleOrthopaedic surgery2024

Risk Factors of Hidden Blood Loss in Unilateral Biportal Endoscopic Surgery for Patients with Lumbar Spinal Stenosis.

Sheng Guo, Zhiyong Yu, Chenglong Wang, Mingqiang Zhong, Rui Wang, Yechang Hu, Chunling Wang, Sen Li

Abstract read
In one paragraph

Article in Orthopaedic surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
–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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Modifiable risk factors for perioperative hidden blood loss in unilateral biportal endoscopic surgery: a systematic review and meta-analysis.Wideochirurgia i inne techniki maloinwazyjne = Videosurgery and other miniinvasive techniques · 2025
    Pooled it
  2. Pooled it
  3. Unilateral biportal endoscopic in spine surgery: a global bibliometric analysis of research trends and influences.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 · 2026
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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

8 authors.

Sheng GuoDepartment of Foot and Ankle Surgery, Xiangyang Hospital of Traditional Chinese Medicine (The Affiliated Orthopedics & Traumatology Hospital of Hubei University of Traditional Chinese Medicine), Xiangyang, China.ORCID https://orcid.org/0000-0001-6621-275X
Zhiyong YuDepartment of Foot and Ankle Surgery, Xiangyang Hospital of Traditional Chinese Medicine (The Affiliated Orthopedics & Traumatology Hospital of Hubei University of Traditional Chinese Medicine), Xiangyang, China.
Chenglong WangDepartment of Spine Surgery, Orthopedic Hospital of Mianyang City, Mianyang, China.ORCID https://orcid.org/0000-0002-3567-5759
Mingqiang ZhongDepartment of Foot and Ankle Surgery, Xiangyang Hospital of Traditional Chinese Medicine (The Affiliated Orthopedics & Traumatology Hospital of Hubei University of Traditional Chinese Medicine), Xiangyang, China.
Rui WangDepartment of Foot and Ankle Surgery, Xiangyang Hospital of Traditional Chinese Medicine (The Affiliated Orthopedics & Traumatology Hospital of Hubei University of Traditional Chinese Medicine), Xiangyang, China.
Yechang HuDepartment of Foot and Ankle Surgery, Xiangyang Hospital of Traditional Chinese Medicine (The Affiliated Orthopedics & Traumatology Hospital of Hubei University of Traditional Chinese Medicine), Xiangyang, China.
Chunling WangDepartment of Foot and Ankle Surgery, Xiangyang Hospital of Traditional Chinese Medicine (The Affiliated Orthopedics & Traumatology Hospital of Hubei University of Traditional Chinese Medicine), Xiangyang, China.
Sen LiDivision of Spine Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.

Funding

Nanjing Drum Tower Hospital Talent Introduction Research Initiation Fund RC2023-040Natural Science Foundation of Sichuan Province 2022NSFSC0688Research Program of Southwest Medical University 2021ZKMS050
6 · The paper itself

Abstract

objectiveUnilateral biportal endoscopic (UBE) surgery has recently been used as a minimally invasive procedure for the treatment of lumbar spinal stenosis and is associated with less perioperative blood loss. However, perioperative hidden blood loss (HBL) may be neglected during UBE. This study aimed to examine the volume of HBL and discuss the influential risk factors for HBL during unilateral biportal endoscopic surgery.

methodsFrom January 2022 to August 2022, 51 patients underwent percutaneous unilateral biportal endoscopic surgery for lumbar spinal stenosis at the Department of Spinal Surgery of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University and were enrolled in this study. The data included general indicators (age, sex and body mass index [BMI]), underlying disease (hypertension and diabetes), laboratory test results (prothrombin time [PT], activated partial thromboplastin time [APTT], fibrinogen [Fbg]), and preoperative and postoperative hematocrit and hemoglobin), related imaging parameters (severity of intervertebral disc [IVD] degeneration and soft tissue thickness of the interlaminar approach), number of operated vertebrae and operation time. Total blood loss (TBL) and HBL during surgical procedures were measured via the Gross formula. Influential factors were further analyzed by multivariate linear regression analysis and t-tests.

resultsThe mean HBL was 257.89 ± 190.66 mL for single-operation patients and 296.58 ± 269.75 mL for two-operation patients. Patients with lower PT (p = 0.044), deeper tissue thickness (p = 0.047), and diabetes mellitus were determined to have more HBL during UBE. The operation time might also be an important factor (p = 0.047). However, sex (p = 0.265), age (p = 0.771/0.624), BMI (p = 0.655/0.664), APTT (p = 0.545/0.751), degree of degenerated IVD (p = 0.932/0.477), and hypertension (p = 0.356/0.896) were not related to HBL.

conclusionThis study determined the different influential factors of HBL during UBE. PT, tissue thickness, and diabetes mellitus are the independent risk factors that affect HBL incidence. Long PT may decrease the volume of HBL within a certain range. Tissue thickness and diabetes mellitus can lead to an increased volume of HBL.

Indexed as

Diabetes MellitusHypertensionSpinal FusionSpinal StenosisBlood Loss, SurgicalEndoscopyHumansLumbar VertebraeRetrospective StudiesRisk FactorsTreatment OutcomeHidden blood lossLumbar spinal stenosisUnilateral biportal endoscopic surgery

Identifiers

PMID38384164
PMCPMC10984805

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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.