The Fontan procedure is a palliative surgical intervention performed in patients with single-ventricle congenital heart defects. This operation reroutes systemic venous return directly to the…
Heparin-induced thrombocytopenia (HIT) is a prothrombotic, immune-mediated adverse reaction to heparin exposure. Paradoxically, HIT causes thrombosis rather than bleeding, despite the hallmark of thrombocytopenia. It…
Thromboembolism due to prosthetic heart valves represents a significant clinical concern, particularly in patients with mechanical valve replacements. These complications arise when thrombi form on…
Thromboembolic disorders are conditions characterized by the abnormal formation and migration of blood clots within the circulatory system. These clots, or thrombi, may form in…
Thrombocytosis is defined as a sustained elevation in platelet count exceeding 450,000/μL. When occurring in the context of myeloproliferative neoplasms (MPNs), this hematologic abnormality is…
Thrombocytopenia is a common hematologic manifestation in patients with chronic hepatitis C virus (HCV) infection. It is characterized by a platelet count below 150,000/µL and…
Thrombocytopenia, defined as a platelet count below 150,000/µL, is a frequent hematological abnormality in patients with chronic hepatitis. It is most commonly observed in those…
Thick bronchial secretions refer to abnormally viscous mucus accumulating within the bronchial tubes. These secretions are typically composed of water, glycoproteins, lipids, and immune cells.…
Thiamine, also known as vitamin B1, is a water-soluble vitamin essential for energy metabolism, nerve function, and glucose utilization. It serves as a coenzyme in…
Thallium is a highly toxic heavy metal once commonly used in rodenticides, insecticides, and electronics manufacturing. Despite regulations limiting its commercial use, thallium exposure still…