Pouya Ebrahimi

Tehran University of Medical Sciences

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Homa Taheri

Cedars-Sinai Medical Center

Kaveh Hosseini

Tehran University of Medical Sciences

Hamidreza Soleimani

Tehran University of Medical Sciences

Mohsen Anafje

Shaheed Rajaei Cardiovascular Medical and Research Center

Roozbeh Nazari

Shahid Beheshti University of Medical Sciences

Maryam Taheri

Tehran University of Medical Sciences

Delaram J. Ghadimi

Shahid Beheshti University of Medical Sciences

Parnian Soltani

Shahid Beheshti University of Medical Sciences

Nahid Senobari

Shahid Beheshti University of Medical Sciences

Mahbube Ebrahimpur

Tehran University of Medical Sciences

Cooperative Institutions

Tehran University of Medical Sciences

109

Shahid Beheshti University of Medical Sciences

Iran University of Medical Sciences

University of Tehran

Tehran Heart Center

Ahvaz Jundishapur University of Medical Sciences

Imam Khomeini Hospital

Shaheed Rajaei Cardiovascular Medical and Research Center

Shariati Hospital

Isfahan University of Medical Sciences

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Pediatric coronary cameral fistula in a structurally normal heart: a case report and review of the literature

Journal of Medical Case Reports (2024)

Hojjat Mortezaeian Maryam Taheri Mohsen Anafje Zahra Esmaeili Golnar Hassanzadeh

Coronary cameral fistulas (CCFs) are rare congenital anomalies characterized by abnormal connections between a coronary artery and one of the cardiac chambers. These abnormal connections can lead to significant clinical implications, including heart failure and myocardial ischemia, necessitating timely diagnosis and intervention.

Surgical oncology

10.1186/s13256-024-04784-w

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Citations (3)

Deep Learning‐Based Techniques in Glioma Brain Tumor Segmentation Using Multi‐Parametric MRI: A Review on Clinical Applications and Future Outlooks

Journal of Magnetic Resonance Imaging (2024)

Delaram J. Ghadimi Amir M. Vahdani Hanie Karimi Pouya Ebrahimi Mobina Fathi

This comprehensive review explores the role of deep learning (DL) in glioma segmentation using multiparametric magnetic resonance imaging (MRI) data. The study surveys advanced techniques such as multiparametric MRI for capturing the complex nature of gliomas. It delves into the integration of DL with MRI, focusing on convolutional neural networks (CNNs) and their remarkable capabilities in tumor segmentation. Clinical applications of DL‐based segmentation are highlighted, including treatment planning, monitoring treatment response, and distinguishing between tumor progression and pseudo‐progression. Furthermore, the review examines the evolution of DL‐based segmentation studies, from early CNN models to recent advancements such as attention mechanisms and transformer models. Challenges in data quality, gradient vanishing, and model interpretability are discussed. The review concludes with insights into future research directions, emphasizing the importance of addressing tumor heterogeneity, integrating genomic data, and ensuring responsible deployment of DL‐driven healthcare technologies. Evidence Level N/A Technical Efficacy Stage 2

10.1002/jmri.29543

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A recurrent typical angina pectoris without any finding in coronary angiography: Microvascular angina

Clinical Case Reports (2024)

Homa Taheri Maryam Taheri Pouya Ebrahimi Parnian Soltani Amin Zaki Zadeh

Key Clinical Message Microvascular angina (MVA) can present with recurrent chest pain and normal coronary angiography. Recognizing MVA is crucial as it significantly impacts patient morbidity and mortality. Early diagnosis and management with antianginal medications are essential for improving outcomes and quality of life. Abstract Cardiovascular diseases are still the main cause of death in many parts of the world. Chest pain and dyspnea are always concerning due to the implications of cardiovascular disease. However, in patients with the involvement of the small coronary vessels (Microvascular Angina), symptoms might be recurrent and persistent despite the presence of normal coronary vessel evaluations. A 45‐year‐old man with a 25‐year smoking history presented with recurrent chest pain, especially during physical activity, and mild shortness of breath. He was admitted, and a coronary angiography the next day appeared normal. However, a cardiac PET scan revealed the involvement of small coronary vessels not visible on angiography. The Patient was a 45‐year‐old man who presented with recurrent chest pain, more prominent during physical activity. He also had mild shortness of breath. The patient was admitted, and the next day, he underwent normal coronary angiography. The cardiac positron emission tomography (PET scan) showed the involvement of small coronary vessels that were not obvious on angiography.

10.1002/ccr3.9475

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Dynapenia-abdominal obesity and mortality risk, is independent effect obscured by age and frailty?:Birjand Longitudinal Aging Study (BLAS)

Journal of Diabetes & Metabolic Disorders (2024)

Mansoureh Ashghali Farahani Farshad Sharifi Moloud Payab Zhaleh Shadman Hossein Fakhrzadeh

Abdominal obesity

Longitudinal Study

Univariate analysis

10.1007/s40200-024-01501-8

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Rupture of a calcified right ventricle to pulmonary artery homograft by balloon dilation– emergency rescue by venus P-Valve

International Journal of Emergency Medicine (2024)

Hojjat Mortezaeian Ata Firouzi Pouya Ebrahimi Mohsen Anafje Peyman Bashghareh

Percutaneous pulmonary valve implantation (PPVI) is a recognized alternative treatment to surgery for patients with dysfunctional right ventricular outflow tracts. Patient selection is essential to avoid serious complications from attempted treatment, such as rupture or dissection, especially of the calcified outflow tracts. We describe a case with an unexpected rupture of a calcified homograft valve and main pulmonary artery, which was treated successfully by emergency implantation of a self-expanding Venus P-Valve (Venus MedTech, Hangzhou, China) without the need for pre-stenting with a covered stent.

Angiology

Balloon dilation

10.1186/s12245-024-00702-5

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Citations (1)

Hypokalemic paralysis following intramuscular betamethasone injection: A case report and review of literature

Clinical Case Reports (2024)

Pouya Ebrahimi Homa Taheri Seyed Ali Mousavinejad Pedram Nazari

Key Clinical Message Acute neuromuscular paralysis is a relatively common condition in emergency rooms (ERs). They can be caused by several reasons, including adverse drug reactions. Betamethasone is a glucocorticoid commonly used for various conditions, such as allergic conditions. One of the rare but known side effects of glucocorticoids is hypokalemia. Rare cases of hypokalemia following high‐ and low‐dose glucocorticoid injections have been reported. This study presents the history of a young, healthy male without significant past medical history who presented with an inability to stand and walk due to four‐limb paralysis (more prominent in the lower limbs) following an intramuscular injection of a 4 mg betamethasone, which was prescribed for the treatment of allergic rhinitis. The patient was stabilized with an intravascular injection of potassium chloride diluted in 1000 mL of normal saline and monitored for 24 h, ruling out any other endocrine condition. Hypokalemia and its severe form are defined as the serum level of lower than 3.5 and 2.5 mEq/Lit, respectively. One of the etiologies of drug‐induced hypokalemic paralysis is systemic glucocorticoid administration. In severe cases, it can cause quadriplegia and other neuromuscular, respiratory, and cardiac complications. Therefore, it is an urgent condition that should be managed carefully. Pregnant women who are receiving these medications are a specific group at risk of hypokalemic paralysis. There are several safer treatments for seasonal allergic rhinitis compared to systemic glucocorticoids, which should be considered by physicians. Moreover, paralysis in patients receiving these medications should be approached attentively since it might be caused by hypokalemia, which can be life threatening if not treated. It is advisable that the blood level of electrolytes, especially potassium, be checked for patients who present with paralysis or weakness after glucocorticoid injections.

10.1002/ccr3.8923

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L'incidence des recettes et des dépenses gouvernementales pour les ménages québécois, 2007

RePEc: Research Papers in Economics (2014)

Pouya Ebrahimi Catherine Roch-Hansen François Vaillancourt

Cette etude a pour objectif de repondre a la question suivante : quelle est la distribution au Quebec en 2007 du fardeau des prelevements fiscaux, soit les impots taxes et cotisations sociales, et des avantages tires des depenses publiques pour les menages regroupes en deciles de revenu monetaire. Ceci est un sujet pertinent pour les decideurs publics pour deux raisons. Premierement, il n'y a pas necessairement paiement des prelevements par les redevables legaux, certains etant refiles a d'autres agents economiques. Ainsi, les entreprises ont la possibilite de refiler, en tout ou en partie, selon leur pouvoir de marche, l'imposition de leurs profits soit en aval, par l'augmentation du prix de leurs produits finaux, soit en amont, par la reduction de la remuneration des facteurs de production. Ou encore les employeurs peuvent refiler une partie plus ou moins grande de l'imposition de leur masse salariale a leurs salaries. Le fardeau (l'incidence en termes technique) economique de l'impot ou de la taxe differe donc du fardeau legal. Deuxiemement, l'examen de la seule fiscalite neglige comment les montants ainsi percus sont utilises pour fournir des services publics ou verser des paiements aux menages quebecois. L'examen de la fiscalite et des depenses permet d'identifier les benefices fiscaux nets (ce qui est recu moins ce qu'on paye) pour chacun des menages et donc pour les divers deciles. Notre etude se divise en trois parties. La premiere presente les ecrits pertinents, la seconde les donnees et la methodologie et la troisieme, les resultats, traite de quatre themes : les revenus des menages; une analyse des impots et taxes (le terme utilise pour couvrir l'ensemble des prelevements); une analyse des depenses publiques en transferts et en biens et services; et finalement une consolidation des resultats.

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Comparative Analysis of PCI Strategies in Aortic Stenosis Patients Undergoing TAVI: A Systematic Review and Network Meta‐Analysis

Clinical Cardiology (2024)

Parisa Fallahtafti Hamidreza Soleimani Pouya Ebrahimi Amirhossein Ghaseminejad‐Raeini Elaheh Karimi

Transcatheter aortic valve implantation (TAVI) has been increasingly used in patients with severe aortic stenosis (AS). Since coronary artery disease (CAD) is common among these patients, it is crucial to choose the best method and timing of revascularization. This study aims to compare different timing strategies of percutaneous coronary intervention (PCI) in patients with severe AS undergoing TAVI to clarify whether PCI timing affects the patients' outcomes or not.

10.1002/clc.24324

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An unusual presentation of metastatic prostate cancer in a 44‐year‐old man: A case report and review of the literature

Clinical Case Reports (2024)

Homa Taheri Pouya Ebrahimi Pedram Nazari Amirhosein Kefayat Abbas Mahdavian

Abstract Prostate cancer is one of the two most common non‐cutaneous cancers in men. Its presentation might be with unusual symptoms and cause the wrong initial diagnosis. This case report discusses a rare neurologic manifestation of advanced metastatic cancer in a low‐risk man. He had been receiving treatment for multiple sclerosis incorrectly due to unusual manifestations such as claudication and pelvic, leg, and shoulder pain. The patient underwent a whole‐body bone scan and then a transrectal ultrasound‐guided biopsy, which confirmed metastatic prostate cancer with a Gleason score between 7/10 and 10/10 in all samples. Following treatment with chemotherapeutic injections (docetaxel), luteinizing hormone‐releasing hormone (LHRH) analogous (Zoladex), and testosterone‐suppressing tablets (abiraterone), the disease has been under control and prostate‐specific antigen (PSA) level has decreased significantly. The most common sites of metastasis are regional lymph nodes, bones, and lungs. However, there are reports about the spread of this type of cancer to other parts of the body. Although most patients are diagnosed when the tumor is localized to the prostate, in about 25% of patients, the disease is diagnosed when metastasis has occurred. Some markers can assist physicians in the diagnosis of this disease, such as the Prostate Health Index and the 4 K score. Key Clinical Message The diagnosis of prostate cancer should be considered in all age ranges of adult men. The long‐distance metastasis might cause unusual presentations of the disease, such as neurologic, musculoskeletal, and dermatologic symptoms and signs far from the origin of the cancer, before genitourinary manifestations. It is crucial to keep the diagnosis of prostate cancer in mind for men with suggestive signs and symptoms that are not usually detected in this disease.

10.1002/ccr3.8447

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Citations (7)

Stent Crumpling as a Complication of Percutaneous Coronary Intervention, a Case Report and Literature Review

Clinical Case Reports (2025)

Maryam Mehrpooya Hamed Vahidi Maryam Taheri Pouya Ebrahimi

ABSTRACT Stent crumpling is a rare but potentially life‐threatening complication of percutaneous coronary intervention (PCI). This report highlights a case of stent crumpling during a PCI procedure, its management, and the importance of advanced imaging techniques in diagnosing and addressing such complications. A 78‐year‐old man was admitted for elective PCI on the left anterior descending (LAD) artery following an acute anterior ST‐segment elevation myocardial infarction (STEMI) treated with thrombolytic therapy. The patient exhibited significant ischemic changes on his electrocardiogram (ECG) and experienced persistent angina. During the PCI, two overlapping stents were deployed in the LAD. Post‐dilation led to slow flow and thrombus formation in the LAD, rapidly progressing to cardiac arrest. Immediate resuscitation and intracoronary thrombolytic therapy were initiated. Intravascular ultrasound (IVUS) revealed stent crumpling, so the proximal stent folded within the vessel lumen. To solve this issue, the crumpled stent was crushed behind a newly deployed stent, followed by post‐dilation, which restored TIMI flow grade III in the LAD.

Intravascular Ultrasound

TIMI

Asystole

Lumen (anatomy)

Abciximab

10.1002/ccr3.70212

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