Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 279

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Plasma Norepinephrine Levels in Essential Hypertension

Louis, William J., Doyle, Austin E., Anavekar, Sadanand·1973·New England Journal of Medicine

Abstract

In 31 patients with essential hypertension there was a close relation between resting diastolic blood pressure and basal plasma norepinephrine concentrations (r = 0.741, p < 0.001). After ganglionic blockade there was a highly significant correlation between change in resting blood pressure and change in plasma norepinephrine (r = 0.813, p < 0.001). Moreover, patients with the highest resting blood pressure had the largest falls in blood pressure and plasma norepinephrine. These results suggest that the level of the blood pressure in essential hypertension is at least in part dependent on excess sympathetic activity.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1056/nejm197303222881203

Cites

5 of 5 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 5 references

Cited by

See all 279

Metadata

Authors
Louis, W. J., Doyle, A. E., & Anavekar, S.
Venue
New England Journal of Medicine
Published
1973-03-22
Volume
288
Issue
12
Pages
599-601
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2022294968
Cited by
279
References
5
FWCI
28.92
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Plasma Norepinephrine Levels in Essential Hypertension. https://app.cochat.ai/papers/10.1056/nejm197303222881203
The paper
Louis, W. J., Doyle, A. E., & Anavekar, S. (1973). Plasma Norepinephrine Levels in Essential Hypertension. New England Journal of Medicine. https://doi.org/10.1056/nejm197303222881203

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.