Grzegorz Horosin

Mr. Grzegorz Horosin


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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25 July 2022 in Pharmaceuticals
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Journal Article
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KSKonrad Stępień
Konrad Stępień
KNKarol Witold Nowak
Karol Witold Nowak
NKNatalia Kachnic
Natalia Kachnic
GHGrzegorz Horosin
Grzegorz Horosin
PWPiotr Walczak
Piotr Walczak
JZJarosław Zalewski
Jarosław Zalewski
Statin use and its impact on long-term clinical outcomes in active cancer patients following acute myocardial infarction (MI) remains insufficiently elucidated. Of the 1011 consecutive acute MI patients treated invasively between 2012 and 2017, cancer was identified in 134 (13.3%) subjects. All patients were observed within a median follow-up of 69.2 (37.8–79.9) months. On discharge, statins were prescribed less frequently in MI patients with cancer as compared to the non-cancer MI population (79.9% vs. 91.4%, p < 0.001). The most common statin in both groups was atorvastatin. The long-term mortality was higher in MI patients not treated vs. those treated with statins, both in non-cancer (29.5%/year vs. 6.7%/year, p < 0.001) and cancer groups (53.9%/year vs. 24.9%/year, p < 0.05), respectively. Patient’s age (hazard ratio (HR) 1.04, 95% confidence interval (CI) 1.03–1.05, p < 0.001, per year), an active cancer (HR 2.42, 95% CI 1.89–3.11, p < 0.001), hemoglobin level (HR 1.14, 95% CI 1.09–1.20, p < 0.001, per 1 g/dL decrease), and no statin on discharge (HR 2.13, 95% CI 1.61–2.78, p < 0.001) independently increased long-term mortality. In MI patients, simultaneous diagnosis of an active cancer was associated with less frequently prescribed statins on discharge. Irrespective of cancer diagnosis, no statin use was found as an independent predictor of increased long-term mortality.

Verified
Journal Article
Open access
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KSKonrad Stępień
Konrad Stępień
KNKarol Witold Nowak
Karol Witold Nowak
AKAleksandra Karcińska
Aleksandra Karcińska
GHGrzegorz Horosin
Grzegorz Horosin
AYAlicia del Carmen Yika
Alicia del Carmen Yika
JZJarosław Zalewski
Jarosław Zalewski
Patients with takotsubo syndrome (TTS) may present coronary slow flow (CSF) in angiography performed in the acute myocardial infarction (MI). However, the detailed clinical relevance and its long-term impact remain poorly understood. Among 7771 MI patients hospitalized between 2012 and 2019, TTS was identified in 82 (1.1%) subjects. The epicardial blood flow was assessed with thrombolysis in myocardial infarction (TIMI) scale and corrected TIMI frame count (TFC), whereas myocardial perfusion with TIMI myocardial perfusion grade (TMPG). CSF was defined as TIMI-2 or corrected TFC > 27 frames in at least one epicardial vessel. CSF was identified in 33 (40.2%) TTS patients. In the CSF-TTS versus normal-flow-TTS group, lower values of left ventricular ejection fraction on admission (33.5 (25–40) vs. 40 (35–45)%, p = 0.019), more frequent midventricular TTS (27.3 vs. 8.2%, p = 0.020) and the coexistence of both physical and emotional triggers (9.1 vs. 0%, p = 0.032) were noted. Within a median observation of 55 months, higher all-cause mortality was found in CSF-TTS compared with normal-flow TTS (30.3 vs. 10.2%, p = 0.024). CSF was identified as an independent predictor of long-term mortality (hazard ratio 10.09, 95% confidence interval 2.12–48.00, p = 0.004). CSF identified in two-fifths of TTS patients was associated with unfavorable long-term outcomes.

31 October 2024 in Journal of Clinical Medicine
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Journal Article
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MBMarian Burysz
Marian Burysz
GHGrzegorz Horosin
Grzegorz Horosin
WOWojciech Olejek
Wojciech Olejek
Mariusz KowalewskiMariusz Kowalewski
Mariusz Kowalewski
KBKrzysztof Bartuś
Krzysztof Bartuś
Jakub BatkoJakub Batko
Jakub Batko
Background: The frozen elephant trunk method combines the implantation of a Dacron prosthesis with a self-expanding stent graft, which allows for complex repairs of the aortic arch and thoracic aorta in one procedure. Despite the advantages of hybrid treatment for aortic arch aneurysms, in Poland, only a few such surgeries are performed annually compared to in Western countries. The aim of this study was to demonstrate the 8-year outcomes of treatment at the center where the Aortic Team operates, which is one of the centers in Poland with the most extensive experience in hybrid FET treatment. Methods: Patients who underwent frozen elephant trunk surgery for chronic and acute pathologies of the aortic arch and thoracic aorta between March 2016 and March 2024 were comprehensively analyzed retrospectively. Frozen elephant trunk procedures were performed under three consecutive clinical conditions: acute aortic dissection, chronic aortic dissection and redo surgery. Results: A total of 40 patients (median age: 60 years (53–66), 67.5% male) were admitted to our hospital and underwent an FET procedure. The median Euroscore II was 25.9% and the 30-day mortality was 7.5%. The 1-year and 5-year mortalities were the same, equal to 15%, with mortality cases observed only in the first and second groups of consecutive patients during the first two months of follow-up. Spinal cord injury was observed in 2.5% of patients. Conclusions: The FET technique can be successfully used to treat aortic aneurysms with optimal results and low complication rates. The surgery length, including the cardiopulmonary bypass and aortic cross-clamp times, decreased significantly with increasing experience.

3 February 2025 in Journal of Clinical Medicine
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Journal Article
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KEKarolina Eliasz
Karolina Eliasz
KSKonrad Stępień
Konrad Stępień
MWMaja Izabela Wojtylak
Maja Izabela Wojtylak
OAOliwia Andrasz
Oliwia Andrasz
KMKatarzyna Magdalena Majka
Katarzyna Magdalena Majka
JZJarosław Zalewski
Jarosław Zalewski
Background/Objectives: Hyponatremia is associated with increased mortality in the general hospital population. We sought to investigate whether hyponatremia affects the long-term survival of patients following a myocardial infarction (MI) in both ST-segment elevation (STEMI) and non-ST elevation (NSTEMI) presentations. Methods: In this study, 862 MI patients who were hospitalized between 2012 and 2017 were retrospectively followed-up within the median time period of 41.9 [28.2–73.5] months. All participants were assigned to a hyponatremic or normonatremic group with hyponatremia defined as a sodium level of less than 135 mEq/L on admission. Results: In the acute phase of an MI, hyponatremia was diagnosed in 31 (3.6%) patients. The patients with hyponatremia were less often male (38.7 vs. 70.4%, p < 0.001), and less frequently had Killip class I (63.3 vs. 80%) but more often had Killip class IV on admission (16.7 vs. 4.2%, p = 0.024) and more often had a history of impaired renal function (32.3 vs. 15.5%, p = 0.013) than those with normonatremia. Hyponatremic patients had higher troponin T levels on admission by 75.1% (p = 0.003), a higher isoenzyme MB of creatine kinase level by 34.4% (p = 0.006), and lower hemoglobin (by 8.5%, p = 0.001) levels as compared to the normonatremia group. Long-term mortality was significantly higher in the patients with hyponatremia versus normonatremia (18 [58.1%] vs. 243 [29.2%], log-rank p < 0.001). This was driven by differences in the NSTEMI population (65 vs. 30.5%, p < 0.001). By a Cox proportional hazard regression analysis, hyponatremia was associated with a higher long-term mortality (hazard ratio [HR] of 2.222, a 95% confidence interval [CI] of 1.309–3.773, and p = 0.003). Conclusions: Hyponatremia rarely identified in acute phase of MI was associated with higher long-term mortality, particularly in the NSTEMI population.

22 April 2025 in Endokrynologia Polska
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EPEdward Pędziwiatr
Edward Pędziwiatr
KKKonrad Kaleta
Konrad Kaleta
KMKamil Możdżeń
Kamil Możdżeń
AMAgnieszka Murawska
Agnieszka Murawska
JHJulia Hypnar
Julia Hypnar
AHAlicja Hubalewska-Dydejczyk
Alicja Hubalewska-Dydejczyk
Not required for Clinical Vignette. Keywords: neurosarcoidosis pituitary sarcoidosis pituitary granuloma diabetes insipidus multiaxial hypopituitarism