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CRT & RRT Exam Secrets Study Guide

"How to Ace the Certified Respiratory Therapist (CRT) Exam and Registered Respiratory Therapist (RRT) Exam, using our easy step-by-step CRT & RRT test study guide, without weeks and months of endless studying..." Morrison Media

 

 

 

 

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Pediatric Respiratory Assessment

        Obtain

·         Medical history 

·         General Assessment

o    Determine current emotional state

o    How are they presenting themselves?

·         Respiratory Assessment

o    Inspection 

1.    Respiratory rate and pattern                      

Normal Respiratory Rates in Children

AGE

Rate

Infant

30 – 60

Toddler

24 – 40

Preschooler

22 – 34

School-aged child

18 – 30

Adolescent

12 – 16

 

 

                   2.  Signs of WOB 

·         Percussion and Palpation of the Chest 

·         Palpation

o    Procedure

o    Place hands lightly on the patient’s chest with fingertips and palms in contact with the chest.

o    Have the patient take a slow, deep breaths if possible

o    Used to determine 

§  Asymmetrical chest movement

§  Tactile fremitus

§  Tenderness and pain 

·         Percussion

o    Diagnostic percussion

o    Procedure

o    Placing one or more fingers of one hand between the ribs of the child and then tapping the tips of those fingers with a finger from the other hand

o    The sound make is assessed with each area of one lung as compared to the other.

o    Useful in determining the presence of

§  Atelectasis

§  Consolidation

§  Air trapping

§  Pneumothorax

·         Auscultation of the Chest

o    The primary tool of assessment

o    Stethoscope

§  Adult size

§  Pediatric size

o    Upper airway congestion

§  Don’t confuse upper airway congestion for            bronchial constriction

o    Little or no sound heard

§  A grave sign

§  A upper or lower airway obstruction

 

 

 

 

Cardiac Assessment

·         Normal heart rate will decrease with age 

Normal Heart Rate in Children

Age

Awake heart rate

Sleeping heart rate

Neonate

100 – 180

80 – 160

Infant

 (6 month)

100 – 160

75 – 160

Toddler

80 – 110

60 – 90

Preschool-age child

70 – 110

60 – 90

School-age child

65 – 110

60 – 90

Adolescent

60 – 90

50 – 90

                        

·         Blood Pressure

o    Systolic formula 70 +(2 x age in years)                        

o    Pulse pressure

§  The difference between systolic and diastolic pressures

§  Pulses paradoxus

o    Capillary refill

§  If >3 seconds  

 

Normal Blood Pressure in Children

Age

Systolic Pressure

Diastolic Pressure

Birth

(12 hour, <1000grams)

39 – 59

16 – 36

Birth

( 12 hour,

 3 000grams)

50 – 70

25 – 45

Neonate

(96 hours)

60 – 90

20 – 40

Infant

(6 months)

87 – 105

53 – 66

Toddler

 (2 years)

95 – 105

53 – 66

School

 (7 years)

97 – 112

57 – 71

Adolescent

(15 years)

112 – 128

66 – 80

 

Respiratory Modalities

Oxygen Therapy  

 

Device

Flowrate

Fi02

Advantages

Disadvantages

Nasal Cannula

.01 – 4 LPM

Variable

Good for long term care in chronic disease states, tolerated fairly well, easy to apply and lightweight

Active infants may not  tolerate 

Inaccurate Fi02

Insufficient humidity

Masks

Simple Masks

PRB

NRB

 

Minimum  

6 LPM

Variable

Higher concentrations of FiO2  over cannula, also good for  transport

C02 can buildup

When there is insufficient flowrates are used;

Most infants and

Children don’t tolerate very well and may cause necrosis

Head Hood

Minimum

7 LPM

21% - 100%

Stable Fi02 that does not interrupt daily care; warm and humidified gas at any Fi02 when it used with a blender

If the flow is too high there can be hearing damage and cause a layering of the Fi02 ; Overheating can result in apnea;

Underheating can cause increased 02 consumption; Inadequate flow will result in  a build-up of  C02

Mist Tents

Minimum

 10 LPM

21% - 50%

A cool aerosol

Varying in the Fi02 ; fog or mist with higher 02 output.; Asphyxiation if the tent collapses

Isolette

 

21% - 70%

Warmed humidified gas, with a stable Fi02  when used with a head hood.

Varying Fi02 without the hood ; Good for long stabilization; Risk of bacterial contamination

 

Respiratory Modalities

·         CPT

·         A techniques designed to aid in

o    The mobilization of bronchial secretions

o    The prevention of secretion accumulation

o    Improvement of gas exchange in the treatment of acute and chronic lung disease

·         Techniques

o    Positioning

o    Percussion

o    Vibration

o    Cough

 

Mechanical Ventilation

·         Overview

o    Pediatric patient’s are too often treated as small adults or large neonate’s

·         Indications

o    Same as any age group

§  Acute respiratory acidosis

§  Impending respiratory failure

§  Apnea

§  Neuromuscular

§  Pulmonary

§  Increased ICP

§  Resuscitation

§  Drug overdoses

·         Methods of Ventilation

o    Selected according to the patient’s size and weight

o    Special needs for patients

o    Volume vs. Pressure ventilator

·         Volume

o    Consistent Vt  -  increase risk of barotrauma

o    Vt

·         Pressure 

o    Barotrauma is reduced -  volumes vary as the lung compliance changes

o    Patient’s < 10 kg

o    PIP

o    Respiratory rate

o    Ti

o    Peep

o    Flow

o    Fi02

·         Parameters

o    Ventilator rate

§  Used in combination with Vt  for adequate alveolar ventilation 

o    Fi02                   

§  To maintain a saturation of 92% - 95%

§  Use an analyzer with limits

§  Effects should be to wean the FiO2 below 60% to prevent oxygen toxicity

o    PEEP

§  Titration study

§  The PEEP is increased in small amounts every 10 – 15 minutes

o    Inspiratory Time

o    Considerations

§  Patient’s age

§  Breathing pattern

§  Time constant 

o    I:E ratio

 

Age Group

Inspiratory Time

LBW infants

0.25 – 0.5 seconds

Term infants

0.5 – 0.6 seconds

Toddlers

1.5 – 0.75

Children

1.0 – 1.5

Adults

1.0 – 2.0

 

o    Peak Flow

§  Titrated to the spontaneous demands of patient

§  Maintain a selected set inspiratory pressure

 

 

Approximate sizes for ETT and suction

Age

Weight

3 months

6 kg.

6 months

8 kg

1 year

10 kg

3 years

15 kg

EET size

3.0 – 3.5

3.5 – 4.0

4.0 – 4.5

4.5 – 5.0

Blade

0 – 1

           1

           1

           2

Suction catheter

6 – 8

           8

           8

        8 – 10

  

Age

Weight

6 years

20 KG

8 years

25 kg

12 years

40 kg

16 years

60 kg

EET size

5.0 – 5.5

6.0

7.0

7.0 – 8.0

Blade

2

2

3

3

Suction catheter

10

10 - 13

12 – 14

12 – 14

 

 

Ethics

 

·         The study of rational processes for determining the most morally desirable courses of action with conflicting moral choices

·         Fundamental Ethical Principles

o    Autonomy

§  The patient has the right to make decisions regarding their medical care

§  Two basic requirements

·         The right to decide

·         Act without coercion

§  Paternalism 

o    Beneficence 

§  All medical decisions must be made so as to do good for the patient.

§  Challenges 

·         When the patient, the family, and care givers cannot agree on a course of action.

§  Medical treatment is not mandated if

·         It is not medically indicated

·         Merely prolongs the process of dying

·         It’s futile and inhuman

·&