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Principles of Medications

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Medications PREPARED BY : MS. AILEEN S. ADRALES, RN
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Page 1: Principles of Medications

Medications

PREPARED BY :

MS. AILEEN S. ADRALES,RN

Page 2: Principles of Medications

Pretest

A client tells the nurse, “This pill is

a different color than the one that I

usually take at home.” Which is

the best response by the nurse?

1. “Go ahead and take your

medicine.”

2. “I will recheck your medication

orders.”

3. “Maybe the doctor ordered a

different medication.”

4. “I’ll leave the pill here while I

check with the doctor.”

Page 3: Principles of Medications

Question 2

If the following medications are listed

on a client’s medication

administration record (MAR), which

one should the nurse question?

1. Lasix 40 mg, po, STAT

2. Ampicillin 500 mg, q6 hr, IVPB

3. Humulin L (Lente) insulin 36 u, sc, q

am, ac

4. Codeine q 4-6 hr, po. Prn for pain

Page 4: Principles of Medications

Question 3The primary care provider prescribed

5 mL of a medication to be given deep

IM for a 40-year old female who is

5’7” tall and weighs 135 pounds.

Which of the following is the most

appropriate method of

administration?

1. A tuberculin syringe, #25-#27 gauge,

¼ -5/8 inch needle.

2. Two 3-mL syringes, #20-#23 gauge, 1

½ inch needle.

3. Two 2-mL syringes, #25 gauge, 5/8-

inch needle.

4. Two 2-mL syringes, #20-#23 gauge, 1-

inch needle.

Page 5: Principles of Medications

Question 4

An elderly client with renal

insufficiency is to receive a cardiac

medication. The nurse is most likely

to administer which of the following?

1. A decreased dosage.

2. The standard dosage.

3. An increased dosage.

4. A divided dosage.

Page 6: Principles of Medications

Question 5

Proper administration of an otic

medication to a two-year-old client

includes which of the following?

1. Pull the ear straight back.

2. Pull the ear down and back.

3. Pull the ear up and back.

4. Pull the ear straight upward.

Page 7: Principles of Medications

Administration of Medications

• Medication: substance

administered for the

diagnosis, cure,

treatment, or relief of a

symptom or for

prevention of disease

• Drug: same as

medication – but also

refers to illicitly

obtained substance

Page 8: Principles of Medications

Administration of Medications

• Prescription: The written direction for

the preparation and administration of a

drug

• Generic name: name given before drug

becomes officially approved

• Official name: name which drug is

listed in official publications

Page 9: Principles of Medications

Administration of Medications

• Chemical name: name that

describes the constituents of the

drug

• Trade name: name given to drug by

manufacturer (brand name)

• Pharmacology: study of the effect of

drugs on living organisms

• Pharmacy: Art of preparing,

compounding, and dispensing drugs

•Curative

•Supportive

•Substitutive

•Chemotherapeutic

•Restorative

Page 10: Principles of Medications

Legal Aspects of

Administering

Medications

• Nursing practice acts

• Responsibility for actions

• Question any order that appears

unreasonable

• Refuse to give the medication until the

order is clarified

Page 11: Principles of Medications

Controlled Substances

• Kept under lock

• Special inventory forms

• Documentation requirements

• Counts of controlled

substances

• Procedures for discarding

Page 12: Principles of Medications

Effects of Drugs

1. Therapeutic effect = desired effect

• Reason drug is prescribed

2. Side effect = secondary effect

• Unintended, usually predictable

• May be harmless or harmful

3. Drug toxicity

• Result from overdose, ingestion of

external use drug

• Buildup of drug in blood

Page 13: Principles of Medications

Effects of Drugs

4. Drug allergy

• Immunologic reaction to drug

• Mild to severe reactions (anaphylaxis)

5. Drug tolerance

• Need increasing doses to maintain

therapeutic effect

6. Drug interaction

• One drug affecting effect of another

Page 14: Principles of Medications

Effects of Drugs

7. Potentiating effect

• Effect of one or both drugs is

increased

8. Inhibiting effect

• Effect of one or both drugs is

decreased

9. Synergistic effect

• When two drugs increase the action

of one or another drug

Page 15: Principles of Medications

Drug Misuse

• Improper use of medications

• Drug abuse

• Drug dependence

• Physiologic dependence

• Psychologic dependence

• Drug habituation

• Illicit drugs

Page 16: Principles of Medications

Actions of Drug on Body

• Pharmacodynamics

• Process by which drug changes body

• Pharmacokinetics

• Study of absorption, distribution,

biotransformation, and excretion of

drugs

Page 17: Principles of Medications

Factors Affecting Medication

Action

1. Developmental

2. Gender

3. Cultural, ethnic, and genetic

4. Diet

5. Environment

6. Psychologic

7. Illness and disease

8. Time of administration

Page 18: Principles of Medications

Routes of Medication

Administration

1. Oral

2. Sublingual

3. Buccal

4. Parenteral

oSubcutaneous

oIntramuscular

oIntradermal

oIntravenous

Page 19: Principles of Medications

Routes of Medication

Administration

5. Topical

― Rectal

― Vaginal

― Transdermal

― Inhalation

Copyright 2008 by

Pearson Education, Inc.

Page 20: Principles of Medications

Parts of a Medication Order

1.Full name of the client

2.Date and time the order written

3.Name of drug to be administered

4.Dosage

5.Frequency of administration

6.Route of administration

7.Signature of person writing the order

Page 21: Principles of Medications

Prescription

Page 22: Principles of Medications

Types of Medication

Orders

1. Stat order

• Demerol 100mg IM stat

2. Single Order

• Seconal 100mg hs before surgery

3. Standing order

• Demerol 100 mg IM q4h x 5 days

4. PRN order

Amphojel 15 mL prn

Page 23: Principles of Medications

MAR

Page 24: Principles of Medications

Administering Medications

1. Identify the client

2. Inform the client

3. Administer the drug

4. Provide adjunctive interventions as

indicated

5. Record the drug administered

6. Evaluate the client’s response to the

drug

Page 25: Principles of Medications

Ten “Rights” of Accurate

Medication

Administration

1. Right

medication

2. Right dose

3. Right time

4. Right route

5. Right client

6. Right client

education

7. Right

documentation

8. Right to refuse

9. Right assessment

10.Right evaluation

Page 26: Principles of Medications

The six rights OF Medication Pass

D Drug

R Route

P Patient

A Amount

T Time

S Scribe/ Documentation

Helps prevent medication

errors

Page 27: Principles of Medications

1. Right patient:

– identify the patient you are

going to give

the medicine

Look at the patient’s ID

band too!!!

Page 28: Principles of Medications

• Is this the appropriate

drug for the

condition of the patient?

• Is this the correct drug?

2. Right Drug

Page 29: Principles of Medications

Is this the right dose

based on the patients

size

and age?

Right

Dosage:

Page 30: Principles of Medications

Does the patient’s condition

need the quick acting route

– or can I use the longer

acting route?

• Is the medication made to

be given by that route?

– Not all IV meds can be

given IM and vise versa

Right

Route:

Page 31: Principles of Medications

Is the timing between the

dosages correct?

• Is it every 3 minutes?

• Or every 5 minutes?

• Can I give this medication

only once

Right Time:

Page 32: Principles of Medications

• Documentation of what you

have done

D – Drug

A – Amount

R – Route

T – Time

Right

Scribe/Documentation

Page 33: Principles of Medications

• Correct medication

• Correct concentration

• Expiration date

• Seals intact

• Color

• No precipitate (floaters)

Medication exam:

Page 34: Principles of Medications

Medications Administration

Packaging:

1.Prefilled

Syringe

2.Ampule

3.Vial

4.Tubex

Page 35: Principles of Medications

Prefilled syringe

• two pieces that

screw together

and medication

is quickly

administered

• • Most

emergency

• meds are in

prefilled syringes

Page 36: Principles of Medications

Tubex:

• A type of

prefilled

Syringe

• Need an adapter for administration

Page 37: Principles of Medications

Non prefilled syringes

• Pick the right size

for the job

• Need to know how

much medication

you will be

drawing up

– 1cc or tuberculin

– 3cc

– 5cc

– 10cc

Page 38: Principles of Medications

Non Prefilled

• Luer lock

needle

screws onto

the tip most

syringes• Slip Lock needle slips onto the tip push then twist

Page 39: Principles of Medications

LUER LOCK SLIP

LOCK

Page 40: Principles of Medications

Ampule

– breakable

glass container

that

can be used

only once

Page 41: Principles of Medications

• Self-sealing

rubber

stopper in

the top

• Single dose vial

• Multidose vial

Vial

Page 42: Principles of Medications

Parenteral Medications

• Common nursing procedure

• Absorbed more quickly than oral

• Careful and accurate administration

• Aseptic technique

Copyright 2008 by

Pearson Education, Inc.

Page 43: Principles of Medications

Syringes

Page 44: Principles of Medications

Types of Syringes

Page 45: Principles of Medications

Syringe Tips

Luer-Lok syringe (note threaded tip)

non-Luer-Lok syringe (note the smooth graduated tip)

Page 46: Principles of Medications

Prefilled Syringes

The cartridge slides into syringe barrel, turns, and locks at needle end. The plunger then screws into cartridge end

Page 47: Principles of Medications

Needles

• Stainless steel

• Most disposable

• Parts

• Hub

• Cannula or shaft

• Bevel

Page 48: Principles of Medications

Needles

• Characteristics

• Slant or length of bevel

• Length of the shaft

• Gauge

Page 49: Principles of Medications

Elder Considerations

• Altered memory

• Decreased visual acuity

• Decrease in renal function

• Less complete and slower absorption

from the gastrointestinal tract

Page 50: Principles of Medications

Elder Considerations

• Increased proportion of fat to lean body

mass

• Decreased liver function

• Decreased organ sensitivity

• Altered quality of organ responsiveness

• Decrease in manual dexterity

Page 51: Principles of Medications

Administering Oral Medications

Skill 35-1

Copyright 2008 by

Pearson Education, Inc.

Compare the medication label to the MAR A cutting device can be used to divide tablets

Pouring a liquid medication from a bottle

The bottom of the meniscus is the measuring guide

Page 52: Principles of Medications

Things to Consider

What are the life span considerations for administering oral medications?

What are the home care considerations for administering oral medications?

Page 53: Principles of Medications

Nasogastric/Gastrostomy

Tube Medication

Administration

• Check with pharmacist for a liquid form

• Check to see if medication can be

crushed

• Crush a tablet into a fine powder and

dissolve in at least 30 mL of warm

water

• Open capsules and mix the contents

with water only with the pharmacists

advice

Page 54: Principles of Medications

Nasogastric/Gastrostomy

Tube Medication

Administration

• Do not administer whole or undissolved

medications

• Assess tube placement

• Aspirate stomach contents and measure

the residual volume

Page 55: Principles of Medications

Nasogastric/Gastrostomy

Tube Medication

Administration• Remove the plunger from the syringe

• Connect syringe to a pinched or kinked

tube

• Put 15 - 30 mL (5 - 10 mL for children)

of water into the syringe barrel to flush

the tube

• Pour liquid or dissolved medication into

the syringe barrel and allow to flow by

gravity into the enteral tube

Page 56: Principles of Medications

Nasogastric/Gastrostomy

Tube Medication

Administration

• Administer each medication separately

and flush in between

• After administration of all medications,

flush again

• If the tube is connected to suction,

disconnect the suction and keep the

tube clamped to enhance absorption

Page 57: Principles of Medications

Preparing Medications From

Ampules

Breaking the neck of an ampule

Withdrawing a medication from an ampule

Page 58: Principles of Medications

Preparing Medications From Vials –

Withdrawing a medication from a vial that is held with the base down

Withdrawing a medication from an inverted vial

Page 59: Principles of Medications

Mixing Medications Using One

Syringe – Skill 35-4

Mixing two types of insulin

Page 60: Principles of Medications

Intradermal Injections

Page 61: Principles of Medications

Administering Intradermal

Injections- Skill 35-5

Page 62: Principles of Medications

Subcutaneous Injections

Page 63: Principles of Medications

Administering a Subcutaneous

Injection - Skill 35-6

Page 64: Principles of Medications

Injections (Intramuscular)

Video

Back to Directory

Page 65: Principles of Medications

Intramuscular Injections

• Ventrogluteal

• Vastus lateralis

• Dorsogluteal

• Deltoid

• Rectus femoris

Page 66: Principles of Medications

Ventrogluteal Site

Page 67: Principles of Medications

Vastus Lateralis Site

Copyright 2008 by

Pearson Education, Inc.

infant

adult

Page 68: Principles of Medications

Dorsogluteal Site

Copyright 2008 by

Pearson Education, Inc.

Page 69: Principles of Medications

Deltoid Site

Page 70: Principles of Medications

Rectus Femoris Site

Page 71: Principles of Medications

Administering IV Medications

Using IV Push – Skill 35-9

Page 72: Principles of Medications

Administering Ophthalmic

Instillations – Skill 35-10

Copyright 2008 by

Pearson Education, Inc.

Page 73: Principles of Medications

Administering Otic Instillations –

Skill 35-11

Copyright 2008 by

Pearson Education, Inc.

Page 74: Principles of Medications

Nasal Medications

Page 75: Principles of Medications

Administering Vaginal

Instillations – Skill 35-12

Copyright 2008 by

Pearson Education, Inc.

Page 76: Principles of Medications

Inserting Rectal Suppository

Copyright 2008 by

Pearson Education, Inc.

Page 77: Principles of Medications

Proper Use of a Metered

Dose Inhaler (MDI) Video

Click here to view a video on using a metered dose inhaler.Back to Directory

Page 78: Principles of Medications

Respiratory Inhalation

Copyright 2008 by

Pearson Education, Inc.

Page 79: Principles of Medications

Post Test

A client tells the nurse, “This pill is

a different color than the one that I

usually take at home.” Which is

the best response by the nurse?

1. “Go ahead and take your

medicine.”

2. “I will recheck your medication

orders.”

3. “Maybe the doctor ordered a

different medication.”

4. “I’ll leave the pill here while I

check with the doctor.”

Page 80: Principles of Medications

Rationales 1

1. Do not administer the medication if

there is any doubt.

2. Correct. If there is any doubt, the

medication administration process

should be interrupted until the

question is clarified.

3. Do not administer the medication if

there is any doubt.

4. Never leave medication unattended.

Copyright 2008 by

Pearson Education, Inc.

Page 81: Principles of Medications

Question 2

If the following medications are

listed on a client’s medication

administration record (MAR),

which one should the nurse

question?

1. Lasix 40 mg, po, STAT

2. Ampicillin 500 mg, q6 hr, IVPB

3. Humulin L (Lente) insulin 36 u,

sc, q am, ac

4. Codeine q 4-6 hr, po. Prn for pain

Copyright 2008 by

Pearson Education, Inc.

Page 82: Principles of Medications

Rationales 2

1. Order is okay.

2. Order is okay.

3. Order is okay.

4. Correct. The dosage is missing

from this order.

Copyright 2008 by

Pearson Education, Inc.

Page 83: Principles of Medications

Question 3

The primary care provider prescribed 5 mL

of a medication to be given deep IM for a 40-

year old female who is 5’7” tall and weighs

135 pounds. Which of the following is the

most appropriate method of administration?

1. A tuberculin syringe, #25-#27 gauge, ¼ -5/8

inch needle.

2. Two 3-mL syringes, #20-#23 gauge, 1 ½ inch

needle.

3. Two 2-mL syringes, #25 gauge, 5/8-inch

needle.

4. Two 2-mL syringes, #20-#23 gauge, 1-inch

needle.Copyright 2008 by

Pearson Education, Inc.

Page 84: Principles of Medications

Rationales 3

1. This syringe would be too

small to give two 2.5 mL

doses.

2. Correct. 5 mL is too much

to inject into one site and

needs to be divided into two

2.5 mL doses. Therefore a 3-

mL syringe can be used.

3. This syringe would be too

small to give two 2.5 mL

doses.

4. This syringe would be too

Copyright 2008 by

Pearson Education, Inc.

Page 85: Principles of Medications

Question 4

An elderly client with renal

insufficiency is to receive a

cardiac medication. The nurse is

most likely to administer which

of the following?

1. A decreased dosage.

2. The standard dosage.

3. An increased dosage.

4. A divided dosage.

Copyright 2008 by

Pearson Education, Inc.

Page 86: Principles of Medications

Rationales 4

1. Correct. Due to renal

insufficiency, the dose of the

medication would need to be

decreased in order to avoid

accumulation of the medication

and the risk of toxicity.

2. Incorrect.

3. Incorrect.

4. Incorrect.

Copyright 2008 by

Pearson Education, Inc.

Page 87: Principles of Medications

Question 5

Proper administration of an otic

medication to a two-year-old

client includes which of the

following?

1. Pull the ear straight back.

2. Pull the ear down and back.

3. Pull the ear up and back.

4. Pull the ear straight upward.

Copyright 2008 by

Pearson Education, Inc.

Page 88: Principles of Medications

Rationales 5

1. Incorrect.

2. Correct. In clients less than 3

years of age, the ear must be

pulled down and back.

3. This method is only used in

individuals over 3 years of age.

4. Incorrect.

Copyright 2008 by

Pearson Education, Inc.

Page 89: Principles of Medications

Rationales 1

1. Do not administer the

medication if there is any doubt.

2. Correct. If there is any doubt,

the medication administration

process should be interrupted

until the question is clarified.

3. Do not administer the

medication if there is any doubt.

4. Never leave medication

unattended.

Copyright 2008 by

Pearson Education, Inc.

Page 90: Principles of Medications

Rationales 2

1. Order is okay.

2. Order is okay.

3. Order is okay.

4. Correct. The dosage is missing

from this order.

Copyright 2008 by

Pearson Education, Inc.

Page 91: Principles of Medications

Rationales 3

1. This syringe would be too

small to give two 2.5 mL

doses.

2. Correct. 5 mL is too much

to inject into one site and

needs to be divided into two

2.5 mL doses. Therefore a 3-

mL syringe can be used.

3. This syringe would be too

small to give two 2.5 mL

doses.

4. This syringe would be too

Copyright 2008 by

Pearson Education, Inc.

Page 92: Principles of Medications

Rationales 4

1. Correct. Due to renal

insufficiency, the dose of the

medication would need to be

decreased in order to avoid

accumulation of the medication

and the risk of toxicity.

2. Incorrect.

3. Incorrect.

4. Incorrect.

Copyright 2008 by

Pearson Education, Inc.

Page 93: Principles of Medications

Rationales 5

1. Incorrect.

2. Correct. In clients less than 3

years of age, the ear must be

pulled down and back.

3. This method is only used in

individuals over 3 years of age.

4. Incorrect.

Copyright 2008 by

Pearson Education, Inc.


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