Evidence map›Paper›PMID 27329447›Full record

Trial reportJournal of the American Heart Association2016

Increased Cardiac Workload in the Upright Posture in Men: Noninvasive Hemodynamics in Men Versus Women.

Pauliina Kangas, Anna Tahvanainen, Antti Tikkakoski, Jenni Koskela, Marko Uitto, Jari Viik, Mika Kähönen, Tiit Kööbi, Jukka Mustonen, Ilkka Pörsti

Registry-linked trialOpen access · goldAbstract readClinical TrialComparative Study
In one paragraph

Trial report in Journal of the American Heart Association, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01742702 (Non-Invasive HaemoDYNAMICs in Primary and Secondary Hypertension), which is not on this map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.0field-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.

NCT01742702 unknown statusnot on this map

Non-Invasive HaemoDYNAMICs in Primary and Secondary Hypertension: the DYNAMIC-study

TypeobservationalSponsorTampere UniversityRan2006 to 2025Enrolled2,000ConditionsPrimary Hypertension, Secondary Hypertension, Aortic Stenosis, Renal InsufficiencyArmsNitroglycerin 0.25 mg (single dose, no longer given since January 2017), Salbutamol 400 µg (single dose, no longer given since January 2017), L-arginine (10 min infusion, no longer given since January 2017), Liquorice (2 weeks, glycyrrhizin 290-370 mg daily, no longer given since 2012), Small milk casein-derived polypeptides (12 weeks daily, recordings completed 2011)
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 28 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 3 institutions in 1 country.

Pauliina KangasSchool of Medicine, University of Tampere, Finland pauliina.kangas@fimnet.fi.
Anna TahvanainenSchool of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
Antti TikkakoskiSchool of Medicine, University of Tampere, Finland Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland.
Jenni KoskelaSchool of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
Marko UittoDepartment of Electronics and Communication Engineering, Tampere University of Technology, Tampere, Finland.
Jari ViikDepartment of Electronics and Communication Engineering, Tampere University of Technology, Tampere, Finland.
Mika KähönenSchool of Medicine, University of Tampere, Finland Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland.
Tiit KööbiDepartment of Clinical Physiology, Tampere University Hospital, Tampere, Finland.
Jukka MustonenSchool of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
Ilkka PörstiSchool of Medicine, University of Tampere, Finland Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
Tampere University · FITampere University · FITampere University Hospital · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMen and women differ in the risk of cardiovascular disease, but the underlying mechanisms are not completely understood. We examined possible sex-related differences in supine and upright cardiovascular regulation. METHODS AND

resultsHemodynamics were recorded from 167 men and 167 women of matching age (≈45 years) and body mass index (≈26.5) during passive head-up tilt. None had diabetes mellitus or cardiovascular disease other than hypertension or used antihypertensive medication. Whole-body impedance cardiography, tonometric radial blood pressure, and heart rate variability were analyzed. Results were adjusted for height, smoking, alcohol intake, mean arterial pressure, plasma lipids, and glucose. Supine hemodynamic differences were minor: Men had lower heart rate (-4%) and higher stroke index (+7.5%) than women (P<0.05 for both). Upright systemic vascular resistance was lower (-10%), but stroke index (+15%), cardiac index (+16%), and left cardiac work were clearly higher (+20%) in men than in women (P<0.001 for all). Corresponding results were observed in a subgroup of men and postmenopausal women (n=76, aged >55 years). Heart rate variability analyses showed higher low:high frequency ratios in supine (P<0.001) and upright (P=0.003) positions in men.

conclusionsThe foremost difference in cardiovascular regulation between sexes was higher upright hemodynamic workload for the heart in men, a finding not explained by known cardiovascular risk factors or hormonal differences before menopause. Heart rate variability analyses indicated higher sympathovagal balance in men regardless of body position. The deviations in upright hemodynamics could play a role in the differences in cardiovascular risk between men and women. CLINICAL

trial registrationURL: http://www.clinicaltrials.gov. Unique identifier: NCT01742702.

Indexed as

Body Mass IndexCardiac OutputCardiovascular DiseasesElectrocardiographyFemaleHeart RateHemodynamicsHumansHypertensionMaleMiddle AgedPostureSex Characteristicscardiac outputhemodynamicssex‐specific

Identifiers

PMID27329447
PMCPMC4937251
OpenAlexW2467876360

What Socratic holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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 Socratic graph.