Hemostasis pembekuan darah
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Transcript of Hemostasis pembekuan darah
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HEMOSTASIS AFRIWARDI
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HEMOSTASIS
• DEFENISI : CEGAH HILANG DARAH
• CARA :– SPASME PEMBULUH DARAH– BENTUK SUMBATAN TROMBOSIT– PEMBEKUAN DARAH– PERTUMBUHAN JARINGAN IKAT
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SPASME PEMBULUH DARAH
NYERI REFLEK SARAF
IMPULS
KONTRAKSIDINDING
PEMBULUH
ALIRANDARAH
KURANG
SPASMEMIOGENIK
POTENSIALAKSI
KERUSAKANJARINGAN
PEMBULUH DARAH
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BENTUK SUMBATAN TROMBOSIT
• TROMBOSIT :– BULAT-CAKRAM– 2-4 MIKRON– DARI MEGAKARIOSIT– KONST. 150-300 RIBU/MM3– WAKTU PARUH : 8-12 HARI– DIAMBIL MAKROFAG T.U. LIMPA– MEMBRAN SEL :
• GLIKOPROTEIN• FOSFOLIPID
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PEMBEKUAN DARAH
• JALUR EKSTRINSIK• JALUR INTRINSIK
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JALUR EKSTRINSIKTRAUMA
JARINGANTROMBOPLASTIN
JARINGAN
FACT.X
FACT.VII
ION Cals.
FACT.X ACT
PROTROMBIN TROMBIN
PROTROMBINAKTIVATOR FACT.V
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JALUR INTRINSIK
• SAMA EKSTRINSIK– PROTROMBIN AKTIVATOR– PROTROMBIN ROBAH TROMBIN
• PENGAKTIFAN– FACTOR XII OLEH :
• TRAUMA SEL DARAH
• KONTAK DENGAN KOLAGEN
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PERTUMBUHAN JARINGAN IKAT
• PROSES AKHIR
• BENTUK JARINGAN IKAT
• JARINGAN PERMANEN
• KADANG : JARINGAN PARUT
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KEHILANGAN DARAH
• AKUT :– HEMOSTASIS– KEHILANGAN :
•VOLUME GANGGUAN SIRKULASI•SEL DARAH ANEMIA GANGGUAN
SIRKULASI•KONSTITUEN DARAH
• KRONIS
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KOMPENSASI TUBUH
• AKUT – HIPOVOLEMIA
•HORMONAL GINJAL•SARAF BARORESEPTOR
• KRONIS– SEL DARAH ANEMIA
ERITROPOITIN
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