![Dab tsi yog s2 lub plawv suab? Dab tsi yog s2 lub plawv suab?](https://i.answers-medical.com/preview/medical-health/13852560-what-is-the-s2-heart-sound-j.webp)
Video: Dab tsi yog s2 lub plawv suab?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Qhov thib ob lub plawv suab ( S2 ) yog tsim los ntawm kev kaw ntawm aortic thiab pulmonic li qub. Cov suab tsim los ntawm kev kaw lub aortic valve hu ua A2, thiab suab tsim los ntawm kev kaw lub ntsws ntsws hu ua P2.
Hauv kev hwm rau qhov no, s2 lub plawv suab sawv cev dab tsi?
Thawj zaug lub plawv suab (S1) sawv cev kaw ntawm atrioventricular (mitral thiab tricuspid) li qub raws li cov hlab ntsha hauv siab tshaj li atrial pressures thaum pib ntawm systole (taw tes a). Qhov thib ob lub plawv suab ( S2 ) sawv cev kaw lub semilunar (aortic thiab pulmonary) li qub (taw tes d).
Ib sab saum toj no, s1 thiab s2 lub plawv suab sawv cev dab tsi? Lub "lub" yog thawj lub plawv suab , feem ntau hu ua S1 , thiab yog tshwm sim los ntawm kev kub ntxhov los ntawm kev kaw ntawm mitral thiab tricuspid li qub thaum pib ntawm systole. Qhov thib ob lub plawv suab , "dub" los yog S2 , yog tshwm sim los ntawm kev kaw ntawm aortic thiab pulmonic li qub, cim qhov kawg ntawm systole.
Kuj paub yog, qhov twg s2 hnov zoo tshaj?
Tsis tas li, lub suab S3 yog hnov zoo tshaj ntawm lub plawv apex, qhov sib faib S2 yog hnov zoo tshaj ntawm pulmonic mloog kab lus (sab laug sab sauv qaum sternal).
Dab tsi ua rau sib cais s2 lub plawv suab?
Qhov thib ob lub plawv suab ( S2 ) yog ua los ntawm kev kaw ntawm aortic thiab pulmonic li qub, uas ua rau kev co ntawm daim ntawv qhia valve thiab cov qauv uas nyob ib sab. Thaum lub sijhawm tas sijhawm, lub ntsws ntsws kaw nyob ze rau tib lub sijhawm zoo li aortic, thiab kev sib cais ntawm S2 hnov tsis tau.
Pom zoo:
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