Evidence map›Paper›PMID 25113260›Full record

Observational studyCritical care (London, England)2014

Impact of transpulmonary thermodilution-based cardiac contractility and extravascular lung water measurements on clinical outcome of patients with Takotsubo cardiomyopathy after subarachnoid hemorrhage: a retrospective observational study.

Tatsushi Mutoh, Ken Kazumata, Shunsuke Terasaka, Yasuyuki Taki, Akifumi Suzuki, Tatsuya Ishikawa

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Critical care (London, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Guideline
  2. Review
  3. Review
  4. Observational
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Observational
  11. Review
  12. Observational
  13. Observational
  14. Asymptomatic Mild Hyperperfusion for the Prediction of Clinical Outcome in Postoperative Patients After Subarachnoid Hemorrhage.Medical science monitor : international medical journal of experimental and clinical research · 2017
    Article
  15. Observational
  16. Review
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

6 authors at 4 institutions in 1 country.

Tatsushi Mutoh
Ken Kazumata
Shunsuke Terasaka
Yasuyuki Taki
Akifumi Suzuki
Tatsuya Ishikawa
Hokkaido University · JPResearch Institute for Brain and Blood Vessels Akita · JPKubota (Japan) · JPTohoku University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionTakotsubo cardiomyopathy (TCM) is a life-threatening systemic consequence early after subarachnoid hemorrhage (SAH), but precise hemodynamics and related outcome have not been studied. The purpose of this study was to investigate the TCM-induced cardiac function by transpulmonary thermodilution and its impact on clinical outcome of SAH.

methodsWe retrospectively analyzed 46 consecutive postoperative SAH patients who developed TCM. Patients were divided into two groups of echocardiographic left ventricular ejection fraction (LVEF) < 40% (TCM with left ventricular (LV) dysfunction) and LVEF ≥40% (TCM without LV dysfunction). Cardiac function index (CFI) and extravascular lung water index (ELWI) were monitored by transpulmonary thermodilution, in parallel with serial measurements of echocardiographic parameters and blood biochemical markers.

resultsTranspulmonary thermodilution-derived cardiac function index (CFI) was significantly correlated with (LVEF) (r = 0.82, P < 0.0001). The CFI between day 0 to day 7 was significantly lower in patients with LV dysfunction (LVEF <40%) than in patients with LVEF ≥40% (P < 0.05). CFI had a better ability than cardiac output to detect cardiac dysfunction (LVEF < 40%) (area under the curve: 0.85 ± 0.02; P < 0.001). A CFI value of < 4.2 min-1 had a sensitivity of 82% and specificity of 84% for detecting LVEF <40%. The CFI < 4.2 min-1 was associated with delayed cerebral ischemia (DCI) (odds ratio (OR), 2.14; 95% confidence interval (CI), 1.33-2.86; P = 0.004) and poor 3-month functional outcome on modified Rankin Scale of 4-6 (OR, 1.87; 95% CI, 1.06-3.29; P = 0.02). An extravascular lung water index (ELWI) > 14 mL/kg after day 4 increased the risk of poor functional outcome at 3-month follow-up (OR, 2.10; 95% CI, 1.11-3.97; P = 0.04).

conclusionsProlonged cardiac dysfunction and pulmonary edema increased the risk of DCI and poor 3-month functional outcome in patients with SAH suffering from TCM. Serial measurements of CFI and ELWI by transpulmonary thermodilution may provide an easy bedside method of detecting early changes of the cardiopulmonary function in directing proper post-SAH treatment.

Indexed as

Extravascular Lung WaterAgedBiomarkersComorbidityEchocardiographyFemaleHeart VentriclesHumansIncidenceJapanMaleMiddle AgedMyocardial ContractionOutcome and Process Assessment, Health CarePostoperative ComplicationsPulmonary EdemaBiomarkers

Identifiers

PMID25113260
PMCPMC4243958
OpenAlexW2130210141

What OpenQuestion holds

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LicenceCC BY
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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.