Evidence map›Paper›PMID 33421066›Full record

ReviewThe Journal of clinical endocrinology and metabolism2021

Pitfalls in Performing and Interpreting Inferior Petrosal Sinus Sampling: Personal Experience and Literature Review.

Jordan E Perlman, Philip C Johnston, Ferdinand Hui, Guy Mulligan, Robert J Weil, Pablo F Recinos, Divya Yogi-Morren, Roberto Salvatori, Debraj Mukherjee, Gary Gallia and 2 more

Open access · greenAbstract readReview
In one paragraph

Review in The Journal of clinical endocrinology and metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 4% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
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  16. Approach to the Patient: Diagnosis of Cushing Syndrome.The Journal of clinical endocrinology and metabolism · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Jordan E PerlmanJohns Hopkins University, Division of Endocrinology, Diabetes and Metabolism, Baltimore, MD, USA.
Philip C JohnstonRegional Center for Endocrinology and Diabetes, Royal Victoria Hospital, Belfast, Northern Ireland, UK.
Ferdinand HuiJohns Hopkins University, Department of Radiology, Baltimore, MD, USA.
Guy MulliganDepartment of Endocrinology, Diabetes and Metabolism, Cleveland Clinic, Cleveland, OH, USA.
Robert J WeilDepartment of Neurosurgery, Rhode Island Hospital, Providence, RI, USA.
Pablo F RecinosDepartment of Neurosurgery, Cleveland Clinic, Cleveland, OH, USA.
Divya Yogi-MorrenDepartment of Endocrinology, Diabetes and Metabolism, Cleveland Clinic, Cleveland, OH, USA.
Roberto SalvatoriJohns Hopkins University, Division of Endocrinology, Diabetes and Metabolism, Baltimore, MD, USA.
Debraj MukherjeeJohns Hopkins University, Department of Neurosurgery, Baltimore, MD, USA.
Gary GalliaJohns Hopkins University, Department of Neurosurgery, Baltimore, MD, USA.
Laurence KennedyDepartment of Endocrinology, Diabetes and Metabolism, Cleveland Clinic, Cleveland, OH, USA.
Amir H HamrahianJohns Hopkins University, Division of Endocrinology, Diabetes and Metabolism, Baltimore, MD, USA.
Johns Hopkins University · USCleveland Clinic · USProvidence College · USUniversity of Ulster · GB

Funding

Clinical Research&Epidemiology in Diabetes&EndocrinologyT32DK062707 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI TODD T BROWN, Wendy Lynet Bennett · 2002 to 2026
$7.3M
6 · The paper itself

Abstract

contextInferior petrosal sinus sampling (IPSS) helps differentiate the source of ACTH-dependent hypercortisolism in patients with inconclusive biochemical testing and imaging, and is considered the gold standard for distinguishing Cushing disease (CD) from ectopic ACTH syndrome. We present a comprehensive approach to interpreting IPSS results by examining several real cases. EVIDENCE ACQUISITION: We performed a comprehensive review of the IPSS literature using PubMed since IPSS was first described in 1977. EVIDENCE SYNTHESIS: IPSS cannot be used to confirm the diagnosis of ACTH-dependent Cushing syndrome (CS). It is essential to establish ACTH-dependent hypercortisolism before the procedure. IPSS must be performed by an experienced interventional or neuroradiologist because successful sinus cannulation relies on operator experience. In patients with suspected cyclical CS, it is important to demonstrate the presence of hypercortisolism before IPSS. Concurrent measurement of IPS prolactin levels is useful to confirm adequate IPS venous efflux. This is essential in patients who lack an IPS-to-peripheral (IPS:P) ACTH gradient, suggesting an ectopic source. The prolactin-adjusted IPS:P ACTH ratio can improve differentiation between CD and ectopic ACTH syndrome when there is a lack of proper IPS venous efflux. In patients who have unilateral successful IPS cannulation, a contralateral source cannot be excluded. The value of the intersinus ACTH ratio to predict tumor lateralization may be improved using a prolactin-adjusted ACTH ratio, but this requires further evaluation.

conclusionA stepwise approach in performing and interpreting IPSS will provide clinicians with the best information from this important but delicate procedure.

Indexed as

ACTH Syndrome, EctopicDiagnosis, DifferentialHumansPetrosal Sinus SamplingPituitary ACTH Hypersecretioncase-based reviewinterpretationIPSSperformance

Identifiers

PMID33421066
PMCPMC8599872
OpenAlexW3118576125

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.