#obstruction

• Adenoiditis — An acute or chronic inflammatory process of the pharyngeal tonsil of Luschka (popularly known as adenoid vegetations or adenoids), structurally located within the nasopharynx. This condition, extremely common among preschool children, is of infectious nature and causes severe nasal obstruction, mouth breathing, nocturnal snoring, and can trigger secondary otic or respiratory complications.
• Air embolism — A severe medical condition characterized by the entry and entrapment of air or gas bubbles inside the blood circulatory system, leading to the obstruction of blood vessels (ischemia) in vital tissues. This clinical phenomenon often occurs during invasive surgical procedures, severe traumas, or rapid decompression in divers or pilots.
• Silting up — The act of clogging and its result; a natural or accidental process through which a riverbed or drainage channel becomes blocked due to the massive accumulation of alluvium, silt, gravel, and woody debris transported by floods. This phenomenon causes a reduction in the flow cross-section and the silting up of the watercourse.
• Silting up — The act of silting up and its result; a lexical variant for the natural process of clogging and obstructing a riverbed or channel through the accumulation of alluvium, sediments, and plant debris. It represents the dynamic nominalization of the verb 'a agesti'.
• Silting up — A rare lexical or derivative variant for the act of silting up or clogging; the dynamic process of accumulation and natural damming of a riverbed through alluvium, fine sediments, silt, and plant debris transported by floods. This phenomenon causes a structural modification of the cross-sectional profile of the watercourse.
• Ampulloma — A tumor formation, either benign or malignant, structurally developed at the level of the ampulla of Vater (the confluence area of the common bile duct and the main pancreatic duct into the duodenum). This neoplasm frequently causes early obstructive jaundice by blocking the biliary flow and requires advanced imaging investigations and complex surgical intervention for resection.
• Arteriolith — A calcareous formation or microscopic calculus parasitically located within the wall or lumen of an arteriole, arising from the calcification of an organized thrombus or through mineral degeneration of the elastic tunic. This structural phenomenon rigidizes the vessel and partially blocks local microcirculation, linked with metabolic vascular disorders or severe cellular aging processes.
• Asphygmia — A clinical symptom consisting of the total or temporary absence of arterial pulsations, felt upon palpation of peripheral arteries. This structural-circulatory phenomenon usually occurs due to severe vascular obstruction, embolism, advanced stenosis, or in severe states of shock and cardiac arrest, indicating a collapse of blood pressure or a local interruption of arterial flow.
• Plugged — Having undergone the process of astupare; an opening, pit, channel, or container that has been closed, covered, blocked, or sealed using a stopper, lid, soil, or other material. In a medical or technical sense, it describes an anatomically or structurally obstructed pathway or pipe, preventing the normal flow of fluids or air.
• Atelectasis — A pathological respiratory condition consisting of the total or partial collapse of pulmonary alveoli, leading to the loss of air content from the affected lung parenchyma and the inability to perform gas exchange. It can be congenital, occurring in newborns due to failure of lung expansion at birth, or acquired in adults due to airway obstruction by mucous plugs, tumors, foreign bodies, or extrinsic compression exerted by pleural fluid or air.