Omid Ghamarnejad

ORCID: 0000-0001-7424-1323
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About
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Research Areas
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Organ Transplantation Techniques and Outcomes
  • Liver Disease Diagnosis and Treatment
  • Liver Disease and Transplantation
  • Gallbladder and Bile Duct Disorders
  • Pancreatic and Hepatic Oncology Research
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Renal Transplantation Outcomes and Treatments
  • Liver physiology and pathology
  • Organ Donation and Transplantation
  • Inflammatory Biomarkers in Disease Prognosis
  • Colorectal Cancer Treatments and Studies
  • Surgical Simulation and Training
  • Lymphatic Disorders and Treatments
  • Transplantation: Methods and Outcomes
  • Renal and Vascular Pathologies
  • Augmented Reality Applications
  • Parasitic infections in humans and animals
  • Neurological Complications and Syndromes
  • Amoebic Infections and Treatments
  • Hemostasis and retained surgical items
  • Vascular Malformations and Hemangiomas
  • Genetic and Kidney Cyst Diseases
  • Advanced Radiotherapy Techniques
  • Long-Term Effects of COVID-19

Klinikum Saarbrücken
2021-2025

Heidelberg University
2017-2024

University Hospital Heidelberg
2019-2023

Heidelberg University
2019-2021

Istanbul University
2016-2019

Objectives: To analyze long-term oncological outcome along with prognostic risk factors in a large cohort of patients colorectal liver metastases (CRLM) undergoing ALPPS. Background: ALPPS is two-stage hepatectomy variant that increases resection rates and R0 primarily unresectable CRLM as evidenced recent randomized controlled trial. Long-term oncologic results, however, are lacking. Methods: Cases in- outside the International Registry were collected completed by direct contacts to centers...

10.1097/sla.0000000000004330 article EN Annals of Surgery 2020-08-21

Laparoscopic liver resection (LLR) has revolutionized surgery by offering several advantages over traditional open procedures. However, conventional LLR (C-LLR) certain limitations, such as the inability to palpate tumors and need for continuous ultrasound guidance during surgery, which can result in complications. Real-time tumor-tracking technologies, indocyanine green (ICG) fluorescence imaging, have shown potential enhancing tumor detection improving perioperative outcomes. The...

10.1007/s00464-025-11671-y article EN cc-by-nc-nd Surgical Endoscopy 2025-03-20

Objectives: The aim of this study was to assess intraoperative changes hepatic macrohemodynamics and their association with ascites posthepatectomy liver failure (PHLF) after major hepatectomy. Summary Background Data: Large-scale PHLF remain clinical challenges No has concomitantly evaluated arterial venous in patients undergoing resection. Methods: Portal pressure (PVP), portal flow (PVF), (HAF) were measured intraoperatively pre- postresection 67 consecutive hepatectomy (ie, resection ≥3...

10.1097/sla.0000000000003496 article EN Annals of Surgery 2019-07-25

Abstract Despite the ongoing decades-long controversy, Pringle maneuver (PM) is still frequently used by hepatobiliary surgeons during hepatectomy. The aim of this study was to investigate effect PM on intraoperative blood loss, morbidity, and posthepatectomy hemorrhage (PHH). A series 209 consecutive patients underwent extended hepatectomy (EH) (≥5 segment resection). association with perioperative outcomes evaluated using multivariate analysis a propensity score method control for...

10.1038/s41598-020-64596-y article EN cc-by Scientific Reports 2020-06-01

Abstract Purpose The retroperitoneal nature of the pancreas, marked by minimal intraoperative organ shifts and deformations, makes augmented reality (AR)-based systems highly promising for pancreatic surgery. This study presents preliminary data from a prospective aiming to develop first wearable AR assistance system, ARAS, surgery evaluating its usability, accuracy, effectiveness in enhancing perioperative outcomes patients. Methods We developed ARAS as two-phase system device aid surgeons...

10.1007/s11548-024-03131-0 article EN cc-by International Journal of Computer Assisted Radiology and Surgery 2024-06-07

Background Two surgical options are available for cystic echinococcosis (CE). The two principal approaches radical (resection of the cyst) and conservative (evacuation cyst content partial removal capsule). Here, we describe a standardized endocystectomy technique hepatic echinococcosis. Subjects methods Twenty-one patients (male/female: 4/3; median age: 28 years) with uncomplicated, isolated CE (cyst stages WHO CE1, 2, 3a, 3b) that were treated described in this paper. Before operation...

10.1371/journal.pntd.0007516 article EN cc-by PLoS neglected tropical diseases 2019-06-21

Background . It is a novel idea that platelet counts may be associated with postoperative outcome following liver surgery. This help in planning an extended hepatectomy (EH), which surgical procedure high morbidity and mortality. Aim The aim of this study was to evaluate the predictive potential on EH patients without portal hypertension, splenomegaly, or cirrhosis. Methods A series 213 consecutive underwent (resection ≥ five segments) between 2001 2016. association preoperative...

10.1155/2018/1275720 article EN cc-by Canadian Journal of Gastroenterology and Hepatology 2018-11-01

Abstract Irreversible electroporation (IRE) is an ablation procedure in which cell death induced by ultrashort electrical pulses. In this unicentric retrospective study we investigated the influence of needle positioning on success. 15 IREs with residual tumor after ablation, detected first follow-up MRI, were included, and compared 30 successful ablations. Evaluation geometry revealed significantly higher values for divergence (NDiv, 7.0° vs. 3.7°, p = 0.02), tumor-center-to-ablation-center...

10.1038/s41598-020-78660-0 article EN cc-by Scientific Reports 2020-12-14

Objective: The present study aimed to evaluate the safety of first wearable augmented reality assistance system (ARAS) specifically designed for pancreatic surgery and its impact on perioperative outcomes. Background: Pancreatic remains highly complex is associated with a high rate complications. ARAS, as an intraoperative system, has potential reduce these Methods: This prospective, single-center included 20 patients who underwent using ARAS. These were matched in 1:3 ratio 60 from our...

10.1097/as9.0000000000000516 article EN cc-by-nc-nd Annals of Surgery Open 2024-11-05
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