![S2 lub plawv nyob qhov twg? S2 lub plawv nyob qhov twg?](https://i.answers-medical.com/preview/medical-health/14014107-where-is-s2-heart-sound-heard-j.webp)
Video: S2 lub plawv nyob qhov twg?
![Video: S2 lub plawv nyob qhov twg? Video: S2 lub plawv nyob qhov twg?](https://i.ytimg.com/vi/GqLMcgQsAfw/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Qhov no puas pab tau?
Yog · Tsis yog
Hais txog qhov no, qhov twg yog qhov zoo tshaj plaws hnov?
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).
Kuj Paub, qhov twg s1 thiab s2 nrov tshaj plaws? Qhov kev siv ntawm S1 nyob ntawm: txoj hauj lwm ntawm AV li qub thaum pib ntawm ventricular systole, cov qauv ntawm cov nplooj ntawv lawv tus kheej, thiab tus nqi ntawm lub siab nce nyob rau hauv lub ventricle. Nquag, S1 yog nrov dua tshaj S2 ntawm apex, thiab softer dua S2 ntawm lub hauv paus ntawm lub siab.
Kuj paub yog, dab tsi yog lub suab s2 lub plawv?
Cov S2 lub siab yog tsim los ntawm kev kaw ntawm lub aortic valve ua raws li los ntawm kev kaw ntawm lub pulmonic valve. Qhov thib ob lub plawv suab tshwm sim thaum kawg ntawm systole (ventricular contraction) thiab tseem cim qhov pib ntawm diastole.
Dab tsi tshwm sim thaum lub suab s2 tau hnov ntawm auscultation?
Lub siab suab koj hnov thaum koj xub hnov lub plawv dhia yog S1, thiab thaum lub plawv dhia ploj mus yog S2 . Thaum lub valve yog stenotic los yog puas, qhov txawv txav turbulent ntawm cov ntshav ua ib tug yws yws uas yuav ua tau. hnov Thaum lub sijhawm nyob ntsiag to ntawm systole lossis diastole.
Pom zoo:
Lub plawv plawv twg tsim lub hauv paus ntawm lub plawv?
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Lub hauv paus ntawm lub plawv (sab nraub qaum): Nws tau tsim los ntawm sab laug atrium, uas yog plaub txoj hlab ntshav hlab ntshav. Nws nyob ntawm qhov ntxeev ntawm lub apex
Qhov chaw nyob ntawm thawj lub tsev kawm qib siab kho hniav nyob hauv ntiaj teb nyob qhov twg?
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Dr. John M. Harris tau pib lub ntiaj teb thawj lub tsev kho hniav hauv Bainbridge, Ohio, thiab tau pab tsim kho hniav raws li kev noj qab haus huv. Nws qhib rau 21 Lub Ob Hlis 1828, thiab niaj hnub no yog tsev khaws puav pheej kho hniav. Thawj lub tsev kawm kho hniav, Baltimore College ntawm Kev Kho Hniav, tau qhib hauv Baltimore, Maryland, Asmeskas xyoo 1840
Thawj qhov kev cog lus ntawm lub plawv nyob qhov twg?
![Thawj qhov kev cog lus ntawm lub plawv nyob qhov twg? Thawj qhov kev cog lus ntawm lub plawv nyob qhov twg?](https://i.answers-medical.com/preview/medical-health/13904962-where-does-the-first-contraction-of-the-heart-take-place-j.webp)
Txoj Kev: Ntshav tso cai nkag mus rau qhov tso pa tawm
Lub qhov hluav taws xob nyob qhov twg nyob qhov twg?
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Lub plab feem ntau yog nyob rau sab laug sab saud sab hauv qab lub diaphragm thiab txuas nrog zoo dua rau txoj hlab pas thiab nyob deb rau duodenum
Lub plawv nyob qhov twg piv rau lub ntsws?
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Lub plawv thiab lub ntsws nyob hauv lub hauv siab, lossis kab noj hauv siab. Lub plawv tso ntshav los ntawm lub cev mus rau lub ntsws, qhov twg cov ntshav yog oxygenated. Tom qab ntawd nws rov qab cov ntshav mus rau lub plawv, uas tso cov ntshav oxygenated tshiab mus rau lwm lub cev