null
US
Iniciar Sesión
Regístrate Gratis
Registro
Hemos detectado que no tienes habilitado Javascript en tu navegador. La naturaleza dinámica de nuestro sitio requiere que Javascript esté habilitado para un funcionamiento adecuado. Por favor lee nuestros
términos y condiciones
para más información.
Siguiente
Copiar y Editar
¡Debes iniciar sesión para completar esta acción!
Regístrate gratis
601501
Drug Administration
Descripción
Second year University Drugs and Disease Mapa Mental sobre Drug Administration, creado por lhay94 el 04/03/2014.
Sin etiquetas
drugs and disease
drugs and disease
second year university
Mapa Mental por
lhay94
, actualizado hace más de 1 año
Más
Menos
Creado por
lhay94
hace más de 10 años
135
1
0
Resumen del Recurso
Drug Administration
Oral
Advantages
easy and convenient
no skilled personal required
prep need not be sterile
immune system can cope
stomach
pH = acidic
Acid drugs
mainly non-ionised
readily absorbed
Basic drugs
mainly ionised
poorly absorbed
Neutral drugs
readily absorbed
Duodenum
pH = alkaline
basic drugs => mainly non ionised, readily absorbed
Acidic drugs => mainly ionised, absorption restricted
Disadvantages
effects are slow
absorption maybe incomplete
some drugs to big to be absorbed
some drugs destroyed by gut or liver
INHALATION
Large surface area of alveoli in lungs
good pulmonary blood supply
can have local effect on lung
systemic effects e.g. general anaesthetic
INJECTION
by-pass difficulties of absorption
drugs must be sterile => by passing immune system
exact dose is known
given by skilled staff
INTRAVENOUS
Advantages
rapid effect
lage volumes can be used
Irritant solutions can be used
Disadvantages
rapid delivery to heart, CNS => side effects
cannot recall drug
INTRAMUSCULAR & SUB-CUTANEOUS
Advantages
controlled onset with drug vehicle
aqueous - rapid effect
oily -slow effect
Disadvantages
Damage at injection site
Limited to small volumes
ROUTES determined by
drug chemical nature
how quickly an effect is required
how the effect needs to be maintained
patient condition/compliance
Convenience
many drugs bind to a plasma protein
bound fraction retained in plasma
unbound fraction diffuses into tissues (active)
DISTRIBUTION
out of plasma into tissues
move easily into interstitial fluid around tissues, interact with target
Distribution AWAY from target site => terminate effect
BLOOD-BRAIN/BLOOD-PLACENTA BARRIER
Capillaries in CNS = no pores
only lipophilic drugs can cross capillary membrane
placenta good barrier
only lipophilic drugs cross to foetus
Mostrar resumen completo
Ocultar resumen completo
¿Quieres crear tus propios
Mapas Mentales
gratis
con GoConqr?
Más información
.
Similar
Pharmacology and Toxicology
anniehuaa
Segunda Guerra Mundial 1939-1945
maya velasquez
Apuntes para Aprender Inglés
maya velasquez
Ecuaciones de Segundo Grado
Diego Santos
Modelo de Examen de Inglés - Selectividad
juanmadj
Julio Cortázar
crisferroeldeluna
FILOSOFÍA MEDIEVAL
Víctor Andrés Martínez Caldas
ONDAS
ROSA MARIA ARRIAGA
Pasado simple del verbo "To be"
Juan Pablo Ospino Rodriguez
Choose the most suitable future form in each sentence
Margarita Beatriz Vicente Aparicio
Estructura Titulo V. Revisión actos en vía administrativa, Ley 39/2015, de 1 de octubre de procedimiento administrativo común
Javier A
Explorar la Librería