Evidence map›Paper›PMID 32258364›Full record

ArticleInternational journal of cardiology. Heart & vasculature2020

Clinical relationship between anemia and atrial fibrillation recurrence after catheter ablation without genetic background.

Min Kim, Myunghee Hong, Jong-Youn Kim, In-Soo Kim, Hee Tae Yu, Tae-Hoon Kim, Jae-Sun Uhm, Boyoung Joung, Moon-Hyoung Lee, Hui-Nam Pak

Open access · goldAbstract read
In one paragraph

Article in International journal of cardiology. Heart & vasculature, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.9field-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

20 citing papers in PubMed, 32 citations in OpenAlex.

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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

10 authors at 1 institution in 1 country.

Min KimDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Myunghee HongDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Jong-Youn KimDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
In-Soo KimDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Hee Tae YuDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Tae-Hoon KimDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Jae-Sun UhmDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Boyoung JoungDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Moon-Hyoung LeeDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Hui-Nam PakDivision of Cardiology, Yonsei University Health System, Seoul, Republic of Korea.
Yonsei University Health System · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnemia is a known adverse prognostic factor among patients with cardiovascular diseases. We investigated whether the hemoglobin level was associated with the rhythm outcome after atrial fibrillation (AF) catheter ablation (AFCA).

methodsWe included 2627 patients who underwent AFCA and a guidelines-based rhythm follow-up (age 58 ± 10.9 years, 73% men, 30.6% with persistent AF), and evaluated the association of pre-AFCA anemia (haemoglobin <13 g/dL in men and <12 g/dL in women) and rhythm outcomes. We studied the mechanistic relationship between anemia and AF recurrence using a Mendelian randomization analysis (1775 subjects with genome-wide association study) after reviewing already proven 12 hemoglobin-associated genetic polymorphisms.

resultsThe body mass index, paroxysmal AF, warfarin use, and baseline red cell distribution width were independently associated with anemia in patients with AF. During a 23-month follow-up (interval OR 9-48 months), the clinical AF recurrence rate was significantly higher in patients with than without anemia (log-rank p = 0.001; propensity score-matched log-rank p = 0.004). This pattern was more significant in male patients (Log-rank p < 0.001) or patients with paroxysmal AF (Log-rank p < 0.001). Anemia (hazard ratio [HR] 1.45 [1.17-1.80], p = 0.001), left atrial diameter (HR 1.03 [1.01-1.04], p < 0.001), a female sex (HR 1.17 [1.00-1.36], p = 0.047), and persistent AF (HR 1.58 [1.36-1.84], p < 0.001) were independently associated with post-AFCA clinical recurrence. In the Mendelian randomization, we could not find a significant direct causal relationship between anemia and AF recurrence at the genetic level.

conclusionsPre-AFCA anemia is an independent predictor of post-AFCA clinical recurrence, especially in male patients, without a genetically direct causal relationship.

Indexed as

AnemiaAtrial fibrillationCatheter ablationMendelian randomization

Identifiers

PMID32258364
PMCPMC7125353
OpenAlexW3014397747

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.