TỬ THI HỌC VÀ CÁC DẤU HIỆU BIẾN ĐỔI TỬ THI

T THI HC (THANATOLOGY) nh ngha s cht Xỏc nh s cht Cỏc du hiu sau cht c lng thi gian cht CHT & BIN I SAU CHT nh ngha s cht Xỏc nh s cht Cỏc du hiu sau cht c lng thi gian cht nh ngha s CHT Cht l s ỡnh ch khụng hi phc ca s sng Cht hon ton (Somatic death) Cht khụng hon ton (Molecular death) Cht nóo (Brain death) nh ngha s CHT (QN khỏc) Cht l hin tng ngng hon ton cỏc chc nng sng nh hụ hp, tun hon, bi tit v trao i cht t bo Cht lõm sng: Ngng cỏc chc nng thụ nh th, lu thụng mỏu, bi tit), cú th kộo di 24 gi n 48 gi, cỏ bit 72 gi) Cht sinh vt: Ngng trao i cht mi t bo c th = Cht nóo (Brain death) Trong tinh dch ca ngi ó cht, tinh trựng cú th sng 82 gi k t ngng th XC NH S CHT Ngng tim, ngng th, mt cỏc Raỷch õọỹng maỷch phn x , ng t gión rng Tióm ó ther dổồùi d ECG v EEG Cỏc k thut khỏc Nghióỷm phaùp ICa CC DU HIU SAU CHT u D u hi m s Ngui lnh (algor mortis) Mt nc (Desiccation) Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) u D u hi m n u Thi t thi (Decomposition) Xỏc p húa (Mummification) Sỏp m (Adipocere) CC DU HIU SAU CHT u D u hi m s Ngui lnh (algor mortis) Mt nc (Desiccation) Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) u D u hi m n u Thi t thi (Decomposition) Xỏc p húa (Mummification) Sỏp m (Adipocere) NGUI LNH T THI Th t gim nhit: u, mt, ngn chi Gc chi Nỏch, bng, tng sinh mụn Chuyn húa 35,9 - 37,2 (Ming) 36,3 - 37,6oC (T.trng) Ta nhit (Radiation) i lu (Convection) Bc hi (Evaporation) Truyn dn (Conduction) Cụng thc: Tg = 37 T0 (Tớnh bng gi) 1,5 c lng thi gian cht YU T NH HNG: T s S/Po Qun ỏo che ph Giú, m khụng khớ, cht nc Tng thõn nhiỷt trc cht CC DU HIU SAU CHT u D u hi m s Ngui lnh (algor mortis) Mt nc (Desiccation) Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) u D u hi m n u Thi t thi (Decomposition) Xỏc p húa (Mummification) Sỏp m (Adipocere) Adipocere Nn nhõn n, cht ui, vt xỏc sau thỏng Adipocere Xỏc cht ó nm Phỏt hin Adipocere v chp nh di m Adipocere Julia Buccola Petta, ngi M gc í, cht sau Chin tranh TG I Thi hi chụn ti ngha trang Mount Carmel Khai qut sau cht nm Adipocere Tai nn ụ tụ Nht 1982 Xỏc vt nm 1991 Adipocere Nn nhõn n, 41 tui, cht xe, cũn qun ỏo Adipocere c lng thi gian cht L quan trng t Khỏm Nghim Giỳp loi tr i tng nghi ng, bỏc b chng c ngoi phm Cn kt hp nhiu yu t c lng c lng thi gian cht Da vo: Cỏc du hiu sau cht Cht cha d dy Xột nghim Cỏc yu t khỏc CC DU HIUTgSAU CHT = 37 - To -1,5 Po # kg/ ngy u D u hi m s 6hhsau cht, C Xut nh 8mortis) -10 Ngui lnh (algorhin cngsau hon ton 6h k tip, cht Mt nc (Desiccation) trỡ 12h, mt 12h sau ú Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) CHT TRONG D DY Núi chung, Cm cha nhuyn: cht < 2h Cm ó nhuyn: cht > 2h (so vi thi im n ln cui) Thi im n cui cựng Thi im cht Thi im khỏm nghim XẫT NGHIM Nng Kali dch kớnh Kớch thớch in c võn thiu ht b th mỏu Lactate dch nóo ty CC YU T KHC Da vo chu k sinh trng cụn trựng => thi gian cht Th t, bỏo Tỡnh trng ụng sa, mt dip lc t ca lỏ, s ny chi Tỡnh trng mc rõu ... pallor) HOEN T THI HOEN T THI CC DU HIU SAU CHT u D u hi m s Ngui lnh (algor mortis) Mt nc (Desiccation) Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) u D u hi n u m Thi t thi (Decomposition)... nc (Desiccation) Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) u D u hi m n u Thi t thi (Decomposition) Xỏc p húa (Mummification) Sỏp m (Adipocere) HOEN T THI L im/ mng da i mu,... (Desiccation) Hoen t thi (Post-mortem lividity) Cng t thi (Rigor mortis) u D u hi m n u Thi t thi (Decomposition) Xỏc p húa (Mummification) Sỏp m (Adipocere) NGUI LNH T THI Th t gim nhit: u,