Evidence map›Paper›PMID 26452987›Full record

Observational studyJournal of the American Heart Association2015

Survival After Ventricular Fibrillation Cardiac Arrest in the Sao Paulo Metropolitan Subway System: First Successful Targeted Automated External Defibrillator (AED) Program in Latin America.

Renan Gianotto-Oliveira, Maria Margarita Gonzalez, Caio Brito Vianna, Maurício Monteiro Alves, Sergio Timerman, Roberto Kalil Filho, Karl B Kern

Abstract readObservational Study
In one paragraph

Observational study in Journal of the American Heart Association, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
  2. The global landscape of SCD and approach to case work-up in Latin America: a LAHRS and SOBRAC survey.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Network of Automated External Defibrillators in Poland before the SARS-CoV-2 Pandemic: An In-Depth Analysis.International journal of environmental research and public health · 2022
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Public Access Defibrillation Programs: Improving Outcomes Worldwide.Journal of the American Heart Association · 2015
    Article
  13. Observational
  14. Article
  15. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Renan Gianotto-OliveiraHeart Institute (InCor)-Medicine School of Sao Paulo University, Sao Paulo, SP, Brazil (R.G.O., M.M.G., C.B.V., S.T., R.K.F.).
Maria Margarita GonzalezHeart Institute (InCor)-Medicine School of Sao Paulo University, Sao Paulo, SP, Brazil (R.G.O., M.M.G., C.B.V., S.T., R.K.F.).
Caio Brito ViannaHeart Institute (InCor)-Medicine School of Sao Paulo University, Sao Paulo, SP, Brazil (R.G.O., M.M.G., C.B.V., S.T., R.K.F.).
Maurício Monteiro AlvesSao Paulo Metropolitan Company (Sao Paulo Metro), Sao Paulo, SP, Brazil (M.M.A.).
Sergio TimermanHeart Institute (InCor)-Medicine School of Sao Paulo University, Sao Paulo, SP, Brazil (R.G.O., M.M.G., C.B.V., S.T., R.K.F.).
Roberto Kalil FilhoHeart Institute (InCor)-Medicine School of Sao Paulo University, Sao Paulo, SP, Brazil (R.G.O., M.M.G., C.B.V., S.T., R.K.F.).
Karl B KernDivision of Cardiovascular Medicine, Sarver Heart Center, University of Arizona, Tucson, AZ (K.B.K.).

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTargeted automated external defibrillator (AED) programs have improved survival rates among patients who have an out-of-hospital cardiac arrest (OHCA) in US airports, as well as European and Japanese railways. The Sao Paulo (Brazil) Metro subway carries 4.5 million people per day. A targeted AED program was begun in the Sao Paulo Metro with the objective to improve survival from cardiac arrest. METHODS AND

resultsA prospective, longitudinal, observational study of all cardiac arrests in the Sao Paulo Metro was performed from September 2006 through November 2012. This study focused on cardiac arrest by ventricular arrhythmias, and the primary endpoint was survival to hospital discharge with minimal neurological impairment. A total of 62 patients had an initial cardiac rhythm of ventricular fibrillation. Because no data on cardiac arrest treatment or outcomes existed before beginning this project, the first 16 months of the implementation was used as the initial experience and compared with the subsequent 5 years of full operation. Return of spontaneous circulation was not different between the initial 16 months and the subsequent 5 years (6 of 8 [75%] vs. 39 of 54 [72%]; P=0.88). However, survival to discharge was significantly different once the full program was instituted (0 of 8 vs. 23 of 54 [43%]; P=0.001).

conclusionsImplementation of a targeted AED program in the Sao Paulo Metro subway system saved lives. A short interval between arrest and defibrillation was key for good long-term, neurologically intact survival. These results support strategic expansion of targeted AED programs in other large Latin American cities.

Indexed as

DefibrillatorsRailroadsUrban Health ServicesAgedBrazilCardiopulmonary ResuscitationDeath, Sudden, CardiacElectric CountershockEmergency Medical ServicesFemaleHumansLongitudinal StudiesMaleMiddle AgedOut-of-Hospital Cardiac ArrestPatient Admissionautomatic external defibrillationcardiopulmonary resuscitationventricular fibrillation

Identifiers

PMID26452987
PMCPMC4845117

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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.