Evidence map›Paper›PMID 29914293›Full record

ArticleTherapeutic advances in cardiovascular disease2018

Evaluation of the impact of body mass index on warfarin requirements in hospitalized patients.

Katie B Tellor, Steffany N Nguyen, Amanda C Bultas, Anastasia L Armbruster, Nicholas A Greenwald, Abigail M Yancey

Abstract read
In one paragraph

Article in Therapeutic advances in cardiovascular disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

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

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Evaluation of Potential Drug Interactions with AiDKlinikIntegrated pharmacy research & practice · 2022
    Article
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  11. Warfarin Time in Therapeutic INR Range and Direct Oral Anticoagulant Adherence for Venous Thromboembolism Across the Spectrum of Weight and Body Mass Index: Findings from Veterans Health Administration.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    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

6 authors.

Katie B TellorDepartment of Pharmacy Practice, St Louis College of Pharmacy, 4588 Parkview Place, St Louis, MO 63110, USA.ORCID https://orcid.org/0000-0003-0980-9888
Steffany N NguyenMemorial Hermann, Texas Medical Center, Houston, TX, USA.
Amanda C BultasBarnes Jewish Hospital, St Louis, MO, USA.
Anastasia L ArmbrusterDepartment of Pharmacy Practice, St Louis College of Pharmacy, St Louis, MO, USA.
Nicholas A GreenwaldSt Louis College of Pharmacy, St Louis, MO, USA.
Abigail M YanceyDepartment of Pharmacy Practice, St Louis College of Pharmacy, St Louis, MO, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite well established empiric dose adjustments for drug and disease-state interactions, the impact of body mass index (BM) on warfarin remains unclear. The objective of this study is to evaluate warfarin requirements in hospitalized patients, stratified by BMI.

methodsThis retrospective review included two cohorts of patients: cohort A (patients admitted with a therapeutic international normalized ratio (INR)) and cohort B (newly initiated on warfarin during hospitalization). Exclusion criteria included: age under 18 years, pregnancy, INR (goal 2.5-3.5), and warfarin thromboprophylaxis post orthopedic surgery. The primary outcome was mean total weekly dose (TWD) of warfarin based on weight classification: underweight (BMI <18 kg/m

resultsA total of 585 patients were included in cohort A (26 underweight, 200 normal/overweight, 200 obese, 159 morbidly obese). There was a statistically significant difference in TWD as determined by one-way analysis of variance ( p < 0.05). A Tukey post hoc test revealed a statistically significantly higher TWD in morbidly obese (41.5 mg) compared with underweight (25.6 mg, p < 0.05), normal/overweight (28.8 mg, p < 0.05) and obese patients (32.4 mg, p < 0.05). In cohort B, 379 patients were evaluated (9 underweight, 166 normal/overweight, 152 obese, 52 morbidly obese). Overall, 191 patients had a therapeutic INR on discharge (88.9% underweight, 52.4% normal/overweight, 44.1% obese, 55.8% morbidly obese, p = 0.035). Of those, there was a statistically significant difference in TWD ( p = 0.021) with a higher TWD in the morbidly obese (41 mg) compared with underweight patients (24.4 mg, p = 0.017).

conclusionsBased on the results of this study, morbidly obese patients may require higher TWD to obtain and maintain a therapeutic INR.

Indexed as

Body Mass IndexDrug Dosage CalculationsHospitalizationInpatientsAgedAnticoagulantsBlood CoagulationDrug MonitoringFemaleHumansInternational Normalized RatioMaleMiddle AgedObesity, MorbidRetrospective StudiesWarfarinAnticoagulantsWarfarinanticoagulationatrial fibrillationobesityvenous thromboembolismwarfarin

Identifiers

PMID29914293
PMCPMC6041876

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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.