ảnh minh họa

Dang phun mu con goi la khi dung (aerosol) hien co kha nhieu. Vi du: Thuoc cat con hen chua salbutamol (ventolin hay butoven aerosol doseur), kiem soat hen chua corticoid (fluticason, budenosid) hay chua corticoid hit + salmeterol hit (seretide). Thuoc chua nhiem khuan da chua oxytetraxyclin hydrocortison (oxycort).

Binh xit gom: vo dung bang nhom, thép khong gi, chiu duoc ap luc cao de chua cac chat day va hoat chat. Van bit kin binh co 2 dang: dang phun lien tiep khi bam nut, chi het phun khi bam lai va dang van dinh lieu chi phun ra mot lieu dinh san cho moi lan phun (goi nhat phun).

Chat day la loai khi nén hay khi hoa long co kha nang tao ra ap suat cao.

Hoat chat la cac chat ran hay dung dich long, nhu tuong, hon dich duoc che tao bang ky thuat dac biet de co cac tieu phan rat nho. Khi bam vao dau van, duoi ap luc cua khi day, hoat chat se phun ra giong nhu lan suong hay bui mu nen goi la dang thuoc phun mu, phun suong.

Tuy theo dau phun (con goi mieng phun hay nut bam) ma dang thuoc phun ra co the mem nhu thuoc mo, bot nhao, bot xop, long, ran. Co nhien dau phun se co hinh dang thich hop voi bo phan co the can tiep nhan thuoc nhu mieng, mui, tai, hong.

uu diem

Khi dung ngoai cac hoat chat se khong tham sau vao ben trong ma truc tiep co tac dung ngay tai cho. o mot so loai, thuoc co tac dung sau vao ben trong (hit thuoc vao phoi) hay toan than (phun vao mieng mui duoi luoi, thuoc di theo mao mach, ma khong qua duong tieu hoa). Vi gioi han tac dung tai cho (khi dung ngoai) va khong di qua duong tieu hoa (khi vao bo phan sau hay vao mao mach), mat khac lai o dang cac tieu phan rat nho, nen thuoc co tac dung nhanh va manh.

Mot vi du: khi dung salbutamol duoi dang phun mu (ventolin) thi cac tieu phan salbutamol se gan ngay len niem mac phe quan, lam giam con co that phe quan, cat con hen nhanh chong hon khi uong salbutamol vien nén.

Nhu vay, chi can dung mot lieu nho hon uong hay tiem, khong gay doc cap hay man. Vi du: de phong hen, dung corticoid uong prednisolon moi ngay 5mg lau dai, thi se bi u muoi, nuoc, lam béo gia, nang hon co the bi suy than. Dung corticoid dang phun (fluticason moi ngay chi 100 - 200mcg) lau dai cho hieu luc tot hon ma khong bi cac tac dung phu tren; de dang tao ra lieu on dinh (an vao nut bam o van) ma khong can mot dung cu phan lieu nao khac; luon luon bao quan trong vo kin, nen giu duoc tinh vo khuan nhu khi moi san xuat.

Mot so chu y khi dung

Nguoi benh can duoc huong dan ky truoc khi dung. Vi du: voi dang thuoc hit vao phoi, neu dung khong dung cach, thuoc se khong hap thu day du, khong phat huy hieu luc. Nguoi benh nen tap hit vai lan cho den luc  hit ma khong thay bui mu (thuoc) bay len tren binh thuoc ma di het vao phoi la duoc.

Tranh nham lan cach dung. Can doc ky nhan neu chua rõ phai hoi lai thay thuoc. Bao quan chu dao. Neu lay mot thuoc phun mu dung tren da ma phun vao duong ho hap thi co the gay chet nguoi.

Tre nho hay nguoi lon tuoi khong the hit thang thuoc tu binh xit thi dung mot dung cu rieng giup dua thuoc tu binh xit den mui 

Tuan thu theo lieu chi dan (dung dung so lan va so nhat xit moi ngay).