Evidence map›Paper›PMID 38961365›Full record

Observational studyBMC anesthesiology2024

Accuracy of oscillometric noninvasive blood pressure at the ankle in the lateral position during general anesthesia.

Ahmed Farag, Maha Mostafa, Ahmed Hasanin, Lamis Sobh, Heba Raafat, Gihan Obayah, Maha Youssef

Abstract readObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in BMC anesthesiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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

7 authors.

Ahmed FaragDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt.
Maha MostafaDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt. maha.mostafa@cu.edu.eg.
Ahmed HasaninDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt.
Lamis SobhDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt.
Heba RaafatDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt.
Gihan ObayahDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt.
Maha YoussefDepartment of Anesthesia and Critical Care Medicine, Faculty of Medicine, Cairo University, 01 Elsarayah street, Elmanyal, Cairo, 11559, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study aimed to evaluate the accuracy of ankle blood pressure measurements in relation to invasive blood pressure in the lateral position.

methodsThis prospective observational study included adult patients scheduled for elective non-cardiac surgery under general anesthesia in the lateral position. Paired radial artery invasive and ankle noninvasive blood pressure readings were recorded in the lateral position using GE Carescape B650 monitor. The primary outcome was the ability of ankle mean arterial pressure (MAP) to detect hypotension (MAP < 70 mmHg) using area under the receiver operating characteristic curve (AUC) analysis. The secondary outcomes were the ability of ankle systolic blood pressure (SBP) to detect hypertension (SBP > 140 mmHg) as well as bias (invasive measurement - noninvasive measurement), and agreement between the two methods using the Bland-Altman analysis.

resultsWe analyzed 415 paired readings from 30 patients. The AUC (95% confidence interval [CI]) of ankle MAP for detecting hypotension was 0.88 (0.83-0.93). An ankle MAP of ≤ 86 mmHg had negative and positive predictive values (95% CI) of 99 (97-100)% and 21 (15-29)%, respectively, for detecting hypotension. The AUC (95% CI) of ankle SBP to detect hypertension was 0.83 (0.79-0.86) with negative and positive predictive values (95% CI) of 95 (92-97)% and 36 (26-46)%, respectively, at a cutoff value of > 144 mmHg. The mean bias between the two methods was - 12 ± 17, 3 ± 12, and - 1 ± 11 mmHg for the SBP, diastolic blood pressure, and MAP, respectively.

conclusionIn patients under general anesthesia in the lateral position, ankle blood pressure measurements are not interchangeable with the corresponding invasive measurements. However, an ankle MAP > 86 mmHg can exclude hypotension with 99% accuracy, and an ankle SBP < 144 mmHg can exclude hypertension with 95% accuracy.

Indexed as

Anesthesia, GeneralAnkleBlood Pressure DeterminationAdultAgedBlood PressureFemaleHumansHypertensionHypotensionMaleMiddle AgedOscillometryPatient PositioningProspective StudiesAnkleHypertensionHypotensionInvasive blood pressureLateral positionNoninvasive blood pressureOscillometry

Identifiers

PMID38961365
PMCPMC11221163

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Registered trials

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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.