What is pathophysiology of Heart attack?

Lalela leli khasi

Iyini i-pathophysiology yokuhlaselwa yisifo senhliziyo?

I-pathophysiology yokuhlaselwa yinhliziyo, eyaziwa nangokuthi i-myocardial infarction, ihilela ukuphazamiseka kokugeleza kwegazi engxenyeni yomsipha wenhliziyo, okuholela ekufeni kwamangqamuzana enhliziyo.

Lokhu kuvame ukwenzeka ngenxa yokuvinjelwa komthambo we-coronary yi-blood clot, okuvame ukuba umphumela we-atherosclerosis, isimo lapho i-plaque ikhula khona emithanjeni.

I - plaque yakhiwa i - cholesterol, izinto ezinamafutha, imfucumfucu yamangqamuzana, i - calcium, ne - fibrin.

Lapho i-plaque iqhekeka, ingabangela ukuba kwakheke amahlule egazi, angavimba umthambo futhi avimbele igazi elicebile nge-oxygen ukuba lifinyelele emsipheni wenhliziyo.

Lokhu kushoda komoya-mpilo kubangela ukuba amangqamuzana emisipha yenhliziyo afe, okuholela ekuhlaselweni yisifo senhliziyo.

Ubukhulu bomonakalo buxhomeke ngobukhulu bendawo enikezwa umthambo ovinjiwe nesikhathi esiphakathi kokuhlaselwa nokwelashwa.

Izimpawu zokuhlaselwa yisifo senhliziyo zingahlanganisa ubuhlungu esifubeni noma ukungakhululeki, ukuphefumula kanzima, isicanucanu, isiyezi, nobuhlungu ezingalweni, entanyeni, emhlane noma emhlane.

Ukwelashwa kokuhlaselwa yisifo senhliziyo ngokuvamile kuhilela ukubuyisela ukugeleza kwegazi emisipheni yenhliziyo ngokushesha ngangokunokwenzeka, kungaba ngemithi noma ngezinqubo ezinjenge-angioplasty ne-stenting noma ukuhlinzwa kwe-coronary artery bypass.

Kubalulekile ukuphawula ukuthi i-pathophysiology yokuhlaselwa yisifo senhliziyo iyinkimbinkimbi futhi ihilela izici eziningi, kuhlanganise nezakhi zofuzo, indlela yokuphila, nezinto zemvelo.

Izici eziyingozi zokuhlaselwa yisifo senhliziyo zihlanganisa umfutho wegazi ophakeme, i-cholesterol ephezulu, ukubhema, isifo sikashukela, ukukhuluphala, ukungasebenzi ngokomzimba, kanye nomlando womndeni wesifo senhliziyo.

Ukulawula lezi zici zobungozi kungasiza ekunciphiseni amathuba okuthola isifo senhliziyo.

Izikhombo

PubMed/Medline https://www.nlm.nih.gov/databases/download/pubmed_medline.html

RefinedWeb https://arxiv.org/abs/2306.01116

Scott J: Pathophysiology and biochemistry of cardiovascular disease. Curr Opin Genet Dev. 2004, 14 (3): 271-9.

Liu Chung Ming C, Sesperez K, Ben-Sefer E, Arpon D, McGrath K, McClements L, Gentile C: Considerations to Model Heart Disease in Women with Preeclampsia and Cardiovascular Disease. Cells. 2021, 10 (4): .

Hansen J, Victor RG: Direct measurement of sympathetic activity: new insights into disordered blood pressure regulation in chronic renal failure. Curr Opin Nephrol Hypertens. 1994, 3 (6): 636-43.

LaMacchia JC, Roth MB: Aquaporins-2 and -4 regulate glycogen metabolism and survival during hyposmotic-anoxic stress in Caenorhabditis elegans. Am J Physiol Cell Physiol. 2015, 309 (2): C92-6.

Tham YK, Bernardo BC, Ooi JY, Weeks KL, McMullen JR: Pathophysiology of cardiac hypertrophy and heart failure: signaling pathways and novel therapeutic targets. Arch Toxicol. 2015, 89 (9): 1401-38.

Lonn E: The clinical relevance of pharmacological blood pressure lowering mechanisms. Can J Cardiol. 2004, 20 Suppl B (): 83B-88B.

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What is pathophysiology of heart attack?

The pathophysiology of a heart attack, also known as myocardial infarction, involves the disruption of blood flow to a part of the heart muscle, leading to the death of heart cells.

This typically occurs due to the obstruction of a coronary artery by a blood clot, which is often the result of atherosclerosis, a condition where plaque builds up in the arteries.

The plaque is made up of cholesterol, fatty substances, cellular waste products, calcium, and fibrin.

When a plaque ruptures, it can cause a blood clot to form, which can block the artery and prevent oxygen-rich blood from reaching the heart muscle.

This lack of oxygen causes the heart muscle cells to die, leading to a heart attack.

The extent of the damage depends on the size of the area supplied by the blocked artery and the time between the attack and treatment.

Symptoms of a heart attack can include chest pain or discomfort, shortness of breath, nausea, lightheadedness, and pain in the arms, neck, jaw, or back.

Treatment for a heart attack usually involves restoring blood flow to the heart muscle as quickly as possible, either through medication or procedures such as angioplasty and stenting or coronary artery bypass surgery.

It is important to note that the pathophysiology of a heart attack is complex and involves multiple factors, including genetic, lifestyle, and environmental factors.

Risk factors for heart attack include high blood pressure, high cholesterol, smoking, diabetes, obesity, lack of physical activity, and a family history of heart disease.

Managing these risk factors can help reduce the likelihood of experiencing a heart attack.

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