InjectionInjection

InjectionInjection is a method of putting liquid into is a method of putting liquid into the body with a hollow needle and a the body with a hollow needle and a syringe which is pierced through the skin syringe which is pierced through the skin to a sufficient depth for the material to be to a sufficient depth for the material to be forced into the bodyforced into the body..

An An injectioninjection follows a parenteral follows a parenteral route of administration, that is, route of administration, that is, its effect is not necessarily local its effect is not necessarily local to the area in which the injection to the area in which the injection is administered; it is systemicis administered; it is systemic..

There are several types of There are several types of injections including:injections including:Intradermal:IDIntradermal:IDSubcutaneous:SCSubcutaneous:SCIntramuscular:IM Intramuscular:IM intravenous:IVintravenous:IV

Some injection method else:Some injection method else:

intra-arterial intra-arterial (into an artery), e.g. vasodilator drugs in the treatment of (into an artery), e.g. vasodilator drugs in the treatment of vasospasm and thrombolytic drugs for treatment of embolism. vasospasm and thrombolytic drugs for treatment of embolism.

IntracardiacIntracardiac (into the heart), e.g. adrenaline during cardiopulmonary (into the heart), e.g. adrenaline during cardiopulmonary resuscitation resuscitation

Intraosseous infusionIntraosseous infusion (into the bone intravenous access because the (into the bone intravenous access because the bone marrow drains directly into the venous system. This route is bone marrow drains directly into the venous system. This route is occasionally used for drugs and fluids in emergency medicine and occasionally used for drugs and fluids in emergency medicine and paediatrics when intravenous access is difficult.paediatrics when intravenous access is difficult. IntrathecalIntrathecal (into the spinal canal) is most commonly used for spinal (into the spinal canal) is most commonly used for spinal anesthesia and chemotherapyanesthesia and chemotherapy IntraperitonealIntraperitoneal, (infusion or injection into the peritoneum) e.g. peritoneal , (infusion or injection into the peritoneum) e.g. peritoneal dialysis is predominantly used in veterinary medicine and animal testing dialysis is predominantly used in veterinary medicine and animal testing for the administration of systemic drugs and fluids due to the ease of for the administration of systemic drugs and fluids due to the ease of administration compared with other parenteral methods administration compared with other parenteral methods

Characters of injectionsCharacters of injections

TissueTissueNeedle Needle GuageGuage

Drug Drug VolumeVolume

Needle Needle LengthLength

Degree Degree angleangle

IDIDDerm Derm tissuetissue

25-2725-270.5 cc0.5 cc0.5 Inch0.5 Inch55OO- 15- 15OO

SCSCLipid Lipid tissuetissue

23-2523-251 cc1 cc4545OO-90-90OO

IMIMMuscle Muscle tissuetissue

20-2220-221-5 cc1-5 cc7575OO -90 -90OO

IVIVBlood Blood circulatiocirculationn

16-2016-20As needAs need4545OO

Intra Dermal InjectionIntra Dermal Injection Has longest absorption Has longest absorption

time of all parentral toutestime of all parentral toutes Are used for diagnostic Are used for diagnostic

purposespurposes The body reaction is easily The body reaction is easily

visible visible Sites commonly used: Sites commonly used:

forearm, upper arm, upper forearm, upper arm, upper back back

Subcutaneous injectionSubcutaneous injection