Evidence map›Paper›PMID 33845600›Full record

ArticleThe Journal of international medical research2021

Comparative evaluation of the bispectral index (BIS) and BISpro during propofol anaesthesia.

Zhitao Li, Jiachun Cai, Jiexiong Li, Xianghui Xu, Limin Zheng

Open access · goldAbstract readComparative Study
In one paragraph

Article in The Journal of international medical research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.2field-weighted citation impact, top 12% of its field
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

9 citing papers in PubMed, 13 citations in OpenAlex.

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  5. Anesthesia depth prediction from drug infusion history using hybrid AI.BMC medical informatics and decision making · 2025
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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

5 authors at 1 institution in 1 country.

Zhitao LiDepartment of Anaesthesiology, Peking University Shenzhen Hospital, Shenzhen, China.
Jiachun CaiShenzhen Eye Hospital, Shenzhen, China.
Jiexiong LiDepartment of Anaesthesiology, Peking University Shenzhen Hospital, Shenzhen, China.
Xianghui XuDepartment of Pain, Peking University Shenzhen Hospital, Shenzhen, China.
Limin ZhengDepartment of Anaesthesiology, Peking University Shenzhen Hospital, Shenzhen, China.
Peking University Shenzhen Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo compare the accuracy, correlation and agreement between the bispectral index (BIS) and BISpro during propofol anaesthesia.

methodsThe BIS, BISpro, heart rate, target-concentration of propofol and Observer's Assessment of Alertness and Sedation (OAA/S) score were recorded every 30 s in female patients scheduled for hysteroscopic surgery. Propofol anaesthesia was induced by an initial target-controlled concentration (1.0 μg/ml) followed by a stepwise increase (0.5 μg/ml) until the patient was unresponsive. Spearman's correlation coefficient and prediction probability were calculated for the association between sedation levels and the above parameters. The ability of investigated parameters to distinguish between OAA/S scores was analysed. Bland-Altman analysis was used to compare the agreement between BIS and BISpro. The BIS and BISpro cut-off values for lost response were also determined.

resultsOut of 30 patients in total, a high correlation was found between BIS and BISpro, and both correlated well with OAA/S score. Only BIS was able to distinguish all investigated OAA/S states accurately, but the ability to predict OAA/S score 5 to loss of response was comparable between BIS and BISpro. The calculated cut-off values were 68 for BIS and 70 for BISpro.

conclusionBISpro and BIS are reliable monitors of general anaesthesia during sedation.

Indexed as

AnesthesiaPropofolAnesthetics, IntravenousElectroencephalographyFemaleHumansHypnotics and SedativesAnesthetics, IntravenousHypnotics and SedativesPropofolanaesthesiaBISBispectral indexBISpromonitorpropofolsedation

Identifiers

PMID33845600
PMCPMC8047833
OpenAlexW3152546151

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.