Both injection and infusion are medical terminologies. They are both ways of administering medicine to a patient and important in health and life-saving. The medicine is usually in liquid form. Many people are usually confused and do not know their differences.
Injection in most case is known to be a 'shot' using a needle or a syringe. It usually takes a short period of time while an infusion takes quite a lot of time (more than fifteen minutes), probably for about thirty minutes or even longer. It is a slow method of medication to a patient.
An injection is administered within muscles (intramuscular), or intra-aerial, or beneath the skin (intradermal) or within the fat or the skin of the patient (subcutaneous). On the other hand, an infusion is administered a PICC line, intraosseous (IO), intravenous (IV), porta cath or any other device. Infusion, in this case, administer the medicine directly into the bloodstream.
An injection is usually administered continuously while infusion may be continuous or even in spurts. This is done using infusion pumps. An infusion can as well be time controlled.
Injecting a patient involves a syringe that is carefully held by hands. On the other hand, with an infusion, an IV bag hung up while a tubing and a needle are left in the vein of the patient. The fluid then drips from the bag into the tubing dropwise as set by the nurse or the doctor.
Related: Mechanism of Drug Release from Oral Dosage Forms
In most cases, an intravenous infusion would require a person to be rehydrated. This calls for intravenous drips of the saline. When the medication is administered, then it could be done through the same tubing that was used for the saline drip. This is not usually the case with medication administered through an injection.
Due to it that an infusion takes a lot of time, it may be two to three hours one would be required to have a rest on his or her provided bed in the hospital. This is to ensure that the patient is more comfortable and not experiencing any further pain. An injection can be done when one is standing or even sitting on a chair. It is a quick process and given if the condition is not serious especially in the case of a vaccination.
Related: Absorption, Distribution, Metabolism and Excretion of Drug
Injection in most case is known to be a 'shot' using a needle or a syringe. It usually takes a short period of time while an infusion takes quite a lot of time (more than fifteen minutes), probably for about thirty minutes or even longer. It is a slow method of medication to a patient.
An injection is usually administered continuously while infusion may be continuous or even in spurts. This is done using infusion pumps. An infusion can as well be time controlled.
Injecting a patient involves a syringe that is carefully held by hands. On the other hand, with an infusion, an IV bag hung up while a tubing and a needle are left in the vein of the patient. The fluid then drips from the bag into the tubing dropwise as set by the nurse or the doctor.
Related: Mechanism of Drug Release from Oral Dosage Forms
In most cases, an intravenous infusion would require a person to be rehydrated. This calls for intravenous drips of the saline. When the medication is administered, then it could be done through the same tubing that was used for the saline drip. This is not usually the case with medication administered through an injection.
Due to it that an infusion takes a lot of time, it may be two to three hours one would be required to have a rest on his or her provided bed in the hospital. This is to ensure that the patient is more comfortable and not experiencing any further pain. An injection can be done when one is standing or even sitting on a chair. It is a quick process and given if the condition is not serious especially in the case of a vaccination.
Related: Absorption, Distribution, Metabolism and Excretion of Drug
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Very useful information.
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