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Profil bibliographique

Guðjón Birgisson

Informations fournies par OpenAlex. Research Africa ne déduit ni nationalité, ni poste, ni coordonnées personnelles.

25Publications signalées
278Citations signalées
1Affiliations récentes

Les institutions déclarées

Les domaines associés

Hormonal Regulation and HypertensionAdrenal and Paraganglionic TumorsAdrenal Hormones and DisordersPancreatic and Hepatic Oncology ResearchPituitary Gland Disorders and Treatments

Les publications récentes

2025 article OpenAlex

Distinguishing Unilateral from Bilateral Primary Aldosteronism: The Reliability of the Posture Test and the Success Rate of Adrenal Venous Sampling in Iceland

Hrafnhildur Gunnarsdóttir, Jon E. Gudmundsson, Guðjón Birgisson, Helga Ágústa Sigurjónsdóttir

Primary aldosteronism is a common cause of hypertension. Distinguishing between unilateral and bilateral primary aldosteronism is mandatory and remains a challenge. The upright posture test has been debated, whereas adrenal venous sampling remains the gold standard for subtyping. We conducted a retrospective …

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2 citations Hormone and Metabolic Research
Accès ouvert 2025 article OpenAlex

Early implementation of laparoscopic left-sided pancreatectomy in a tertiary low-volume hospital

Karin U. Johansen, Guðjón Birgisson, Kristín H. Haraldsdóttir

BACKGROUND AND AIMS: Current international guidelines recommend a center volume of at least 20 minimally invasive pancreatic procedures a year to perform laparoscopic left pancreatectomy. Iceland is a small, isolated country that is unavoidably low volume in terms of pancreatic surgery. To …

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0 citations Scandinavian Journal of Surgery
Accès ouvert 2025 article OpenAlex

Twenty years of pancreatoduodenectomy at a tertiary low-volume hospital: A nationwide Icelandic study

Karin U. Johansen, Guðjón Birgisson, Kristín Huld Haraldsdóttir

BACKGROUND: Due to its geographic isolation and limited population, Iceland inherently operates as a low-volume center for pancreatic surgery. To ensure high-quality health care, there is a long tradition of specialists training abroad. This retrospective cohort study aimed to evaluate pancreatic surgery …

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0 citations The Surgeon
Accès ouvert 2023 article OpenAlex

FRI150 Individualized And Shorter Follow-up With Immunohistochemical Staining In Unilateral Primary Aldosteronism?

Hrafnhildur Gunnarsdóttir, Bjarni Agnar Agnarsson, Sigurrós Jónasdóttir, Jon E. Gudmundsson et autres

Abstract Disclosure: H. Gunnarsdottir: None. B.A. Agnarsson: None. S. Jonasdottir: None. J. Gudmundsson: None. G. Birgisson: None. H.Á. Sigurjónsdóttir: None. Indroduction: Clinical significance of specific antibody staining (SAS) for unilateral primary aldosteronism (PA) has been unclear. Individualized follow-up of PA patients could …

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0 citations Journal of the Endocrine Society
Accès ouvert 2023 article OpenAlex

Immunohistochemical staining seems mandatory for individualizing and shortening follow‐up in unilateral primary aldosteronism

Hrafnhildur Gunnarsdóttir, Bjarni Agnar Agnarsson, Sigurrós Jónasdóttir, Jon Gudmundsson et autres

OBJECTIVE: The clinical significance of immunohistochemistry (IHC) for unilateral primary aldosteronism (PA) has been unclear. Individualized follow-up of PA patients could be in sight. Long-term outcomes of patients, classified based on IHC, need further investigation. We aimed to assess long-term clinical outcomes …

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8 citations Clinical Endocrinology
2022 article OpenAlex

Are We Only Detecting the Tip of the Iceberg? A Nationwide Study on Primary Aldosteronism with up to 8-Year Follow-up

Hrafnhildur Gunnarsdóttir, Guðbjörg Jónsdóttir, Guðjón Birgisson, Jon Gudmundsson et autres

Background Long-term follow-up studies on primary aldosteronism (PA) are lacking.Objective We aim to review results of diagnostic procedures and histopathology for patients diagnosed during 2012–2016 in Iceland, compare unilateral (UD) and bilateral disease (BD) and assess treatment response.Methods Thirty-two patients aged 28–88 …

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5 citations Endocrine Research
Accès ouvert 2022 dataset OpenAlex

Are We Only Detecting the Tip of the Iceberg? A Nationwide Study on Primary Aldosteronism with up to 8-Year Follow-up

Hrafnhildur Gunnarsdóttir, Guðbjörg Jónsdóttir, Guðjón Birgisson, Jon Gudmundsson et autres

Long-term follow-up studies on primary aldosteronism (PA) are lacking. We aim to review results of diagnostic procedures and histopathology for patients diagnosed during 2012–2016 in Iceland, compare unilateral (UD) and bilateral disease (BD) and assess treatment response. Thirty-two patients aged 28–88 were …

0 citations Figshare

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