Absorption rates

11 terms by mcostakis 

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Mnemonic for drug absorption rates

ISR SPIT

IV

1-3 minutes
"I" in ISR
- enter the systemic circulation rapidly

Inhaled

1-3 minutes
"I" in ISR
- produces a rapid response to a drug because of the large surface area of the lungs & their extensive blood supply

Intra-arterial

1-3 minutes
"I" in ISR
- reach a target sit in high concentration

Intra-thecal (trachea)

1-3 minutes
"I" in ISR

Sublingual

15 minutes
-Give nitro x3 - 5 minutes apart (3X5=15)

Rectal

15-30 minutes
(sublingual X 2)

Subq (except insulin)

45 minutes
(30 +15/Rectal + Sublingual)
- rely on diffusion of the drug into the bloodstream which can be influenced by warming or cooling the area or by other drugs

PO

45 minutes
(30 +15/Rectal + Sublingual)

IM

45 minutes
(30 +15/Rectal + Sublingual)
- rely on diffusion of the drug into the bloodstream which can be influenced by warming or cooling the area or by other drugs

Topical

60 minutes

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