Evidence map›Paper›PMID 31158351›Full record

ArticleThe Annals of thoracic surgery2019

Acute Type A Dissection Repair by High-Volume Vs Low-Volume Surgeons at a High-Volume Aortic Center.

Juan B Umana-Pizano, Alexander P Nissen, Harleen K Sandhu, Charles C Miller, Andrei Loghin, Hazim J Safi, Steven B Eisenberg, Anthony L Estrera, Tom C Nguyen

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in The Annals of thoracic surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 3 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

37 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Guideline
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  3. Guideline
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Anesthetic Management for Proximal Aortic Repair.Seminars in cardiothoracic and vascular anesthesia · 2025
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Acute type A aortic syndromes: outcomes are independent of aortic root/valve management.Indian journal of thoracic and cardiovascular surgery · 2024
    Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Juan B Umana-PizanoDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Alexander P NissenDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas; Department of Surgery, San Antonio Military Medical Center, Fort Sam Houston, Texas.
Harleen K SandhuDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Charles C MillerDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Andrei LoghinDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Hazim J SafiDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Steven B EisenbergDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Anthony L EstreraDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas.
Tom C NguyenDepartment of Cardiothoracic and Vascular Surgery, Memorial Hermann Hospital, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas. Electronic address: tom.c.nguyen@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrevious studies suggest improved outcomes for acute type A dissections (ATAAD) treated at high-volume centers. It is unclear if outcomes are a result of individual surgeon experience or inherent resources available at high-volume centers. To explore this question, we stratified outcomes for ATAAD repair by low-volume and high-volume surgeons at a high-volume center.

methodsWe reviewed our institutional experience with ATAAD between 1999 and 2016 (n = 580). To evaluate surgeon experience with ATAAD repair, we categorized surgeons as high-volume aortic surgeons (HVASs) (> 10 cases/year) or low-volume aortic surgeons (LVASs) (≤ 10 cases/year). Analysis was stratified according to the following: HVAS in primary and first assist roles, HVAS as primary with LVAS as first assist, LVAS as primary and HVAS as first assist, and LVAS in both roles.

resultsThe total experience for HVAS and LVAS as primary surgeon for the study period was 513 and 67, respectively. Mean annual experience as primary surgeon was 15.2 cases for HVAS and 3.4 cases for LVAS. In-hospital mortality was 14.0% if an HVAS was present and 24.0% with an all-LVAS team (P = .27). After adjusting for preoperative factors, the mortality odds ratio (OR) for an all-LVAS team was 3.72 (P = .01).

conclusionsATAAD repair by an all-LVAS team had nearly a 4-fold increase in-hospital mortality compared with an all-HVAS team. Improved outcomes at high-volume centers may be predominantly due to surgeon experience and not from center-specific resources. This study may have implications on call coverage for ATAAD repair at high-volume centers.

Indexed as

Clinical CompetenceHospitals, High-VolumeAcute DiseaseAdultAgedAortic DissectionFemaleHospital MortalityHumansMaleMiddle AgedRetrospective StudiesTreatment OutcomeVascular Surgical Procedures

Identifiers

What OpenQuestion holds

Textmetadata
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.