jan hovekamp, rn, clinical educator for telemetry services st. joseph healthcare 2008

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Jan Hovekamp, RN, Clinical Educator for Telemetry Services Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008 St. Joseph Healthcare 2008 Application and Dysrhythmia Interpretation Application and Dysrhythmia Interpretation

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Cardiovascular Technology. Application and Dysrhythmia Interpretation. Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008. Cardiac Rhythm & Dysrhythmias I. Anatomy and Physiology of the Heart II. What is an EKG? - PowerPoint PPT Presentation

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Page 1: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Jan Hovekamp, RN, Clinical Educator for Telemetry ServicesJan Hovekamp, RN, Clinical Educator for Telemetry ServicesSt. Joseph Healthcare 2008St. Joseph Healthcare 2008

Application and Dysrhythmia InterpretationApplication and Dysrhythmia Interpretation

Page 2: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Regions of Regions of the Heartthe Heart

Sinus

Atrial

Junctional

Ventricular

Cardiac Rhythm & DysrhythmiasI. Anatomy and Physiology of the HeartII. What is an EKG?III. Stages of the Heart Beat & How we measure themIV. Steps to Interpret RhythmsV. Dysrhythmia Groups Sinus 1. Normal Sinus Rhythm (NSR) 2. Sinus Tachycardia (ST) 3. Sinus Bradycardia (SB) 4. Sinus Arrhythmia (SA) 5. Sinus Arrest – Asystole 6. Pause 7. Pulseless Electrical Activity (PEA) Junctional Premature Beats 1. Premature Atrial Contraction (PAC) 2. Premature Junctional Contraction (PJC) 3. Premature Ventricular Contraction (PVC) a. PVC b. Couplet c. Triplet` d. Bigeminy e. Trigeminy Ventricular 1. Ventricular Tachycardia 2. Sustained V Tach 3. Idioventricular 4. Torsades de Pointes 5. Ventricular Fibrillation Pacemakers

•Failure to Capture•Failure to Sense •Atrial Paced•Ventricular Paced•AV Paced

Atrial 1. Atrial Fibrillation (A-Fib) 2. Atrial Flutter (A-Fl) 3. Wandering Atrial Pacemaker (WAP) 4. Paroxysmal Atrial Tachycardia (PAT) 5. Paroxysmal Supraventricular Tachycardia (PSVT)Other Wave Changes 1. ST Elevation 2. ST Depression 3. Tall T Waves 4. Inverted T Waves 5. Tall P Waves 6. Inverted P WavesHeart Blocks 1.Bundle Branch Block (BBB) 2.AV Blocks (Atrial-Ventricular Block

First Degree AV BlockSecond Degree AV Block–Type 1 – WenckebachSecond Degree AV Block–Type 2 – Mobitz IIThird Degree – Complete Heart Block

Page 3: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

http://www.smm.org/heart/heart/circ.htm

Page 4: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

The heart is made up of four The heart is made up of four chamberschambers

Right AtriumRight Atrium

Right VentricleRight Ventricle

Left AtriumLeft Atrium

Left VentricleLeft Ventricle

Section 1Section 1

Page 5: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

The first part of the The first part of the heartbeatheartbeat

Oxygen-poor blood from the body fills right atrium

Oxygen-rich blood from lungs fills left atrium

Page 6: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Then both Atria Contract

Pushing all the blood into the left and right VentriclesPushing all the blood into the left and right VentriclesThey usually contract at the same timeThey usually contract at the same time

RightRightAtriumAtrium

LeftLeftAtriumAtrium

LeftLeftVentricleVentricleRightRight

VentricleVentricle

Page 7: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

The Second Part of the Heartbeat

The Ventricles Contract, occurs at about the same time:The Ventricles Contract, occurs at about the same time:

The Right The Right VentricleVentricleSends blood Sends blood through the through the Pulmonary Pulmonary Artery Artery To the Lungs to To the Lungs to pick up Oxygenpick up Oxygen

The Left The Left sidesideSends Sends oxygen oxygen Rich blood Rich blood through the through the Aorta to Aorta to The bodyThe body

Send

The combination of the 1The combination of the 1stst and 2 and 2ndnd part of the heartbeat Creates the Lub-Dub, part of the heartbeat Creates the Lub-Dub, the first and second sounds of the heart beatthe first and second sounds of the heart beat

Page 8: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

http://www.apexinnovate.com/impulse_demo/impulse_v3.swf

Page 9: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

What makes the heart pump?What makes the heart pump?

Natural Electric Impulses Which stimulate heart muscle to contract

• The heart is made primarily of muscle• When the muscle contracts, it squeezes the blood

through the heart and out to the lungs or to the body

Page 10: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Where does the Electricity Come From?Where does the Electricity Come From?Pacemakers

The heart has natural power generators that tell the heart to pump.

* Secondary pacemakers * are scattered throughout the

heartThey function as a lifesaving backup if the SA node fails,

though sometimes they malfunction *

*

*

*

*

The primary pacemaker is the SA NodeThe primary pacemaker is the SA NodeLocated in the top of the Right AtriumLocated in the top of the Right Atrium

The AV node is located in the junction The AV node is located in the junction Of both Atria and both VentriclesOf both Atria and both Ventricles

Page 11: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

How Electricity Travels…How Electricity Travels…

Electrical Conduction Pathway

“Power lines” quickly carry electrical impulses from the pacemakers throughout the heart

Page 12: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

What Electricity Does…What Electricity Does…Myocardium-one of

three layers of the heart. Muscle cells which make up the bulk of the heart. They are able to generate or pass

on electricity.

Electricity that originated at the pacemaker cells, now waves across the muscle

cells, causing them to contract which pumps the blood through the heart.

Page 14: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

This is the normal pathway for electricityThis is the normal pathway for electricityto travel through the heartto travel through the heart

SA node

AV node

Bundle of His

•Left bundle branch

•Right bundle branch

=Myocardium Myocardium

contractscontracts

Page 15: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

SA Node (inherent rate of 60 – 100)

 

Atrial foci (inherent rate of 60 – 80)

Junctional foci (inherent rate of 40 – 60)

  

Ventricular foci (inherent rate of 20 – 40) 

The lower the level in the heart, where the foci is located that is doing the pacing, the lower is the “inherent rate” (heart rate) produced by that area). A foci is a potential pacemaker (or cell) that is capable of pacing in emergency situations.

Each area can pace, but not as well as the area above it!

When the hospitals in New Orleans lost power after Katrina, they progressed down the different levels of functioning. At first they could still function but not as well as they could with full power. The further down the power source went, they were not as efficient or as effective as the previous level.

When we lose power!

Page 16: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Decoding a Rhythm Strip

Page 17: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

What Is An EKG?What Is An EKG?• A graphic representation of the electrical

activity of the heart

Section 2Section 2

As electricity travels across the heart, it causes the cells to shorten, which As electricity travels across the heart, it causes the cells to shorten, which causes the heart to beat ! causes the heart to beat !

This propels the blood through the heart and out to the lungs or to the body !This propels the blood through the heart and out to the lungs or to the body !

Page 18: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

The Electrical Basis of the EKGElectrical impulses are present

on the skin surface at a very low voltage; The EKG machine picks up these impulses and amplifies them.

Electrical activity is sensed by Electrodes are placed on the skin surface to pick up these impulses and give us a picture of how they are traveling in the form of an Electrocardiogram. This is printed on EKG paper and is called a Rhythm strip or an EKG strip

PR IntervalPR Interval QT IntervalQT Interval

QRS IntervalQRS Interval

Page 19: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

These lines represent the electricity traveling over specific parts of the heart

Page 20: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Stages of the Heartbeat:Stages of the Heartbeat:QRS

P wave

T

wave

AtriaAtria contractcontract

VentriclesVentricles contractcontract

Ventricles Ventricles relaxrelax

P Wave, QRS & T Wave make up one complete CARDIAC CYCLE

Page 21: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Breaking down the QRS complexBreaking down the QRS complex

Q wave

R wave

S wave

There may be 3, 2 or only 1 part of the QRS present. It is still called a QRS!There may be 3, 2 or only 1 part of the QRS present. It is still called a QRS!

Page 22: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

To know if the heart is healthy, we To know if the heart is healthy, we measure the size of these wavesmeasure the size of these waves

Page 23: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

How We Measure:How We Measure:EKG PaperEKG Paper

Am

plitu

de

milliV

olts

Duration (Time)Measured in Seconds

As the paper prints out……we are measuring time…….

Page 24: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

• EKG paper is divided into small squares and larger squares

• Large squares are defined by a dark line. They are 5 squares high and 5 squares long (0.20 seconds)

• Small squares may be lines or may be dots within the dark lines. They are 0.04 seconds 0.20 Seconds0.20 Seconds

0.040.04SecondsSeconds

Page 25: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

What We MeasureWhat We Measure

• Heart rateHeart rate• PR intervalPR interval • QRS intervalQRS interval• QT Interval QT Interval

May be done In ICU’s and if patient is on certain medications (i.e. Tikosyn)

Page 26: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Heart Rate: The Easy WayHeart Rate: The Easy Way

Every mark is 3 seconds

(2 marks = 6 seconds)

Look for marks below EKG grid

Count the # of beats by 10’s (10-20-30-40…)

On a 6 second strip

HR for example above = 80 bpm

Page 27: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

P Q

R

ST

PR Interval

QRS Interval

Intervals We MeasureIntervals We MeasureQT interval

Page 28: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Artifact

• EKG waveforms from sources outside the heart

• Interference seen on a monitor or EKG strip– 4 causes

•Patient movement (i.e. pt. with tremors)•Loose or defective electrodes (fuzzy

baseline) • Improper grounding (60 cycle interference)•Faulty EKG apparatus

Page 29: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

When two cars are traveling a distance at the same miles per hour, the one with the shorter distance will arrive at their destination first. Likewise, it takes a certain amount of time for electricity to travel to a destination in the heart. By measuring these distances and how long it takes to travel, we get a picture of what is going on in the heart.

Page 30: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

.04 .06 .08 .10 .12 .14 .16 .18 .20 .22 .24 .26 .28 .30 .32 .34 .36

(OR, cath lab, endo)

Tracing within graph linesNo folded strips

Don't exceed page width

Saint Joseph CVTsMeasure Up!PR?

QRS?

RUN STRIPS for:Within 1 hr of 8-12-4

Admit or transfer

Invasive procedures:Rhythm changes

CHART QUALITY STRIPS!Pt label & name matchDocument if pt off unit

STEPS:Regular?

P, QRS, T pattern?HR?

Normal PR / PAC 1st Degree AVB -->BBB wide QRS blending into T wave = Ventricular beat / PVCQRS

PRNormal QRS

Junctional / PJC

Wenkebach Mobitz II 3rd Degree AVB.20-B-.20-.20-B-.20-B-B .32-B-.24-.16-B-B-.44-B-.20-B.12-.20-.28-B-.12-.20-.28-B

An easy method to measure the different waveforms is a ruler (If you do not have one, see your clinical educator). Other methods include using calipers, memorizing charts, using tables or even a scrap piece of paper.

The clear spaces are used for measuring

Match up the lines! Don’t place over the rhythm strip.

Page 31: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

.12 .14 .16 .18 .20Normal PR / PAC

BBB

PR

Page 32: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

QRSQRS

.04 .06 .08 .10 .12

QRSPR

Normal QRSJunctional / PJC

Page 33: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Steps to Interpret Steps to Interpret RhythmsRhythms

SINUSATRIA

L

VENTRICULAR

JUNCTIONAL

1. Are the beats at regular or irregular intervals apart?

2. Do you see P, QRS, T pattern?

3. What is the HEART RATE?

4. What is the PR INTERVAL?

5. What is the QRS INTERVAL?

Normal ValuesNormal Values

Heart RateHeart Rate: 60-100 beats per minute

PR IntervalPR Interval: .12-.20 seconds

QRS IntervalQRS Interval: < .11 seconds

Page 34: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Origin of RhythmsOrigin of RhythmsThey are named for the structure of the heart where the foci (a cell sending off an electrical

impulse) is located that is producing the abnormal rhythm

• Sinus (Sinus node)

• Junctional (Area between the atria & ventricles)

• Ventricular (any cell in the ventricles)

• Atrial (any cell in the atria)

• AV Blocks (AV node blocking some or all of the passage of electricity through it)

Page 35: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Regions Regions of the of the HeartHeart

Sinus

Atrial

Junctional

Ventricular

Page 36: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Normal Sinus Rhythm (NSR)Normal Sinus Rhythm (NSR)

The SA node has generated an impulse that followed the normal pathway of the electrical

conduction system• Rate normal 60-100• PR normal .12-.20• QRS normal < .11

Page 37: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Sinus Bradycardia (SB)Sinus Bradycardia (SB)• Everything measures normal

except the HR is less than 60

Page 38: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Sinus Tachycardia (ST)Sinus Tachycardia (ST)• Normal except HR >100 bpm

Page 39: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Sinus Arrhythmia (SA)Sinus Arrhythmia (SA)

Normal except irregular The difference between the fastest two heart

beats (from 1 QRS to the next QRS) and the slowest two heart beats is greater than .12 sec

Page 40: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

AsystoleAsystoleNo electrical

activity

Code Blue

Page 41: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

PausePause

Period of no electrical activity, then electrical activity resumes

Page 42: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Pulseless Electrical Activity Pulseless Electrical Activity (PEA(PEA))

Normal rhythm, but…No Pulse*Electrical activity is present but there is no pulse, so the heart is not beating! Something has happened to prevent the muscular tissue from responding to the electrical activity

(i.e. ↓↑ K+, hypothermia, Pneumothorax, cardiac tampanode, hypovolemia, drug overdose, pulmonary or coronary thrombosis)

Code BLUE!

Page 43: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Rhythms arising from the SA NodeRhythms arising from the SA Node• Sinus Rhythm

• Sinus Tachycardia

• Sinus Bradycardia

• Sinus Arrhythmia

• Asystole

• Pulseless Electrical Activity

Page 44: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

RegionsRegions of the of the HeartHeartSinus

Atrial

JunctionaJunctionall

Ventricular

Page 45: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

SinusSinusPR Interval will

be normal

JunctionalJunctionalPR Interval will be PR Interval will be Less than normalLess than normal

Or…Or…There willThere willBe no P WaveBe no P Wave

Page 46: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Junctional RhythmJunctional Rhythm

No P

PR< .12

or

Page 47: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Regions Regions of the of the HeartHeartSinus

Atrial

Junctional

Ventricular

Page 48: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Sinus

Junctional

Ventricular

Atrial

Page 49: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Sinus Rhythm

Junctional Rhythm

Ventricular Rhythm

Page 50: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Junctional

Ventricular

SinusAtrial

PR = .12-.20

PR < .12

Wide QRS

Page 51: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Premature Beats• Not a rhythm, just a single early beat

•If it arises from the Atria, it will have a normal PR IntervalThis is a Premature Atrial Contraction or PAC

•If it arises from the Junctional area, it will have a PR Interval which is less than normal or no P wave at all

This is a Premature Junctional Contraction or PJC•If it arises from the Ventricular area, it will be a QRS which is wide and bizarre shaped

This is a Premature Ventricular Contraction or PVC

Three Options:Three Options:

Page 52: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

PJC

PJC

PVC

SR w/

SR w/

Junctional Rhythm w/

No P No P WaveWave

P WaveP WaveClose to Close to QRSQRS

A wide A wide bizarre bizarre QRSQRS

Page 53: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

SR w/ PAC

Sinus Rhythm

Page 54: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

SR w/ PJC

Junctional Rhythm

Page 55: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

SR w/ PVC

Ventricular Rhythm

Page 56: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Ventricular Ventricular ArrhythmiasArrhythmias

DANGERKEEP OUT!

Page 57: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

When are PVCs a Problem?When are PVCs a Problem?– Increase from the patient’s normal amount– Multiple PVCs in a row– PVC falls on the T wave of previous beat– Multifocal (they arise from different cells, therefore they

are different shapes)

Multifocal PVCsMultifocal PVCs

Page 58: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

PVC TroublesPVC Troubles Bigeminy = every other beat is a PVC

Trigeminy = every 3rd beat is a PVC

Page 59: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Multiple PVCsMultiple PVCs Couplet

Triplet

Page 60: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Ventricular Tachycardia Ventricular Tachycardia (VT)(VT)

• 4 or more ventricular beats in a row• Rate > 150 bpm

6 beats of VTach

If you step onIf you step onA Tack, you willA Tack, you willGet off of it fast!Get off of it fast!

Page 61: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Sustained VTachSustained VTach

Pt stays in VTach & needs our help to switch (defibrillate or cardiovert)

Code BLUE !

Page 62: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Idioventricular Idioventricular RhythmRhythm

• Ventricular beats, but….slow rate

Page 63: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Torsades de Torsades de PointesPointes

A form of VTach which looks like the rhythm strip is twisting

Code BLUE !

Page 64: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Ventricular Ventricular FibrillationFibrillation (VF)(VF)

• Squiggly line

•Code BLUE !

Page 65: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

1 Ventricular Beat =2 Beats =

3 Beats =

More than 3 beats at fast rate =

VENTRICULAR BEATS VENTRICULAR BEATS REVIEWREVIEW

Ventricular beats at slow rate =Ventricular beats twisting tall-short-tall =

No QRS, just shaking =

PVC

Couplet

Triplet

V TachIdioventricular

TorsadesV Fib

Every second beat is ventricular = Bigeminy

Every third beat = Trigeminy

Page 66: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

PacemakersPacemakers

Page 67: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Pacemaker Changes on Pacemaker Changes on EKGEKG

* You must select pacemaker mode on the monitor

V-paced

before the QRS is “V-paced”

A-paced

A spike before the P wave site is “A-paced”

A straight pacemaker “spike” will appear

before both is “AV-paced”

Page 68: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Pacemaker Pacemaker TroublesTroubles

“What Can Go Wrong?”

Page 69: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Failure to CaptureFailure to Capture

• Pacer spike is fired, but no beat follows

You can have QRS’s without pacer spikes, but you cannot have pacerYou can have QRS’s without pacer spikes, but you cannot have pacerSpikes without a QRS following it!Spikes without a QRS following it!

Page 70: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Failure to SenseFailure to Sense

• Heart is beating just fine, but pacemaker fires anyway. The

pacemaker should sense what the heart is doing on its own so it

doesn’t send out an electrical stimulus at a time when the heart

is more vulnerable• Spikes are not in a consistent place before P or QRS --they are seen in many

different places

Page 71: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Regions Regions of the of the HeartHeartSinus

Atrial

Junctional

Ventricular

Page 72: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Atrial FlutterAtrial FlutterCan count the # of flutter waves (P waves)

Atrial Fibrillation (Afib)Atrial Fibrillation (Afib)Unable to count the # of waves

Page 73: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Wandering Atrial PacemakerWandering Atrial Pacemaker

*

**

Different pacemakers fire in a row.

Since they come from different areas in the atria, they will be shaped differently on the strip

Atrial pacemakers

Page 74: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Wandering Atrial Pacemaker Wandering Atrial Pacemaker (WAP)(WAP)

• P waves vary in shape (at least 3 different P waves)• They are coming from different areas of the Atria so

they may have different PR Intervals, also

Page 75: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Paroxysmal Atrial Tachycardia (PAT)Paroxysmal Atrial Tachycardia (PAT)Sudden rate change > 150 bpm

Paroxysmal Supraventricular Paroxysmal Supraventricular Tachycardia (PSVT)Tachycardia (PSVT)

Cannot distinguish a P wave after the HR gets fast

Page 76: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Atrial Rhythms ReviewAtrial Rhythms Review

• Paroxysmal Atrial Tachycardia• Paroxysmal Supraventricular Tachycardia

• Atrial Flutter• Atrial Fibrillation

• Wandering Atrial Pacemaker

Page 77: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Early Indications that a Early Indications that a heart is having heart is having

difficulty!difficulty!

Page 78: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

ST Changes:ST Changes: Heart Attack in ProgressHeart Attack in Progress

ST segment

P

Q

R

S TThe QRS should enter & exit on the baseline

enters

exits

ST Depression (Ischemia)(QRS exits lower than it starts)

entersexits

ST Elevation (Infarction)(QRS exits higher than it starts)

Page 79: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

ST ElevationST Elevation

I would probably have a heart attack if I had to climb this!

He sure is downand depressed !

ST DepressionST Depression

Page 80: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Other Wave ChangesOther Wave Changes

• Tall T waves• Inverted T waves (upside-down)

• Tall P waves• Inverted P waves

Only inverted P waves are normalHelloHello

Page 81: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Only 1 group of arrhythmias to go!I feel I feel

like I am like I am on a on a

treadmiltreadmill!l!

Page 82: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Heart BlocksHeart Blocks

Page 83: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

What’s the Difference Between Heart What’s the Difference Between Heart BlockageBlockage & & BlockBlock??

Electricity blocked from traveling normally =

dysrhythmia

Clogged blood vessels = decrease in oxygen to the

heart = heart attack

Plumbing !Plumbing ! Electricity !Electricity !

Page 84: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Bundle Branch Blocks (BBB)Bundle Branch Blocks (BBB)

Left BBB

It takes longer for electricity

to travel around the blockade

to contract the ventricles.

Takes longer for ventricles to contract

This shows as a wide QRS

≥ .12

Page 85: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

You are trying to get to Lexington from Berea. There is a You are trying to get to Lexington from Berea. There is a Wreck on the Clays Ferry Bridge and the bridge will be Wreck on the Clays Ferry Bridge and the bridge will be Shut down indefinitely. You can still get to Lexington, youShut down indefinitely. You can still get to Lexington, youWill just have to go a different route, which will take longer.Will just have to go a different route, which will take longer.

Page 86: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

AAtrial trial VVentricular Heart Blocksentricular Heart Blocks

•Electricity contracts atria first, then travels down to contract the ventricles.•If the electricity is blocked between the atria & ventricles, the travel time (PR) is abnormal.•Hence, AV blocks have an abnormal PR interval.

The AV Node acts as the gatekeeper for the ventricles, holding the electrical impulse a brief interval to make sure the Atria have finished contracting thus expelling all the blood into the ventricles before allowing the ventricles to contract.

Page 87: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

First Degree 1°AVB1°AVB

Second Degree

Third Degree 3°AVB3°AVB

Types of AV BlocksTypes of AV Blocks

lightest

worst

Wenckebach/Mobitz IWenckebach/Mobitz I

Mobitz IIMobitz II

Page 88: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

First Degree AV BlockFirst Degree AV Block(1º AVB)(1º AVB)

• PR interval > .20

A V//

Example PR intervals: .28 - .28 - .28 - .28 - .28 - .28

Page 89: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Mobitz I: WenkebachMobitz I: Wenkebach• PR interval gradually longer until a QRS is dropped “B” indicates a Blocked Beat

• Pattern is repeated• Typically not harmful

normal longer longer dropped QRS

Example PR intervals: .14 - .20 - .32 – B - .14 - .20 – 32 - B

Page 90: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

MobitzMobitz IIII• PR interval consistent except some QRS missing • Harmful--may indicate serious heart disease or

progress to 3rd degree block

Blocked QRS

Example PR intervals: .16 – B - .16 – B - .16 - .16 - B

Page 91: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

3rd Degree AV Block3rd Degree AV Block (3º AVB) (3º AVB)

Atria & ventricles act independently• Regular P waves• Regular QRS complexesBut…P waves and QRS not working together• PR interval varies (but not in Wenkebach pattern)• Harmful -- patient needs a pacemaker soon!

blocked normal blocked blocked short blocked normal blocked

Example PR intervals: .14 – B - .20 – B – B - .12 – B - .44 - .32 - B

Page 93: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Block ReviewBlock ReviewBundle Branch Blocks QRS > .11

1 º AVB .24 - .24 - .24 - .24 - .24 PR interval >.20

Wenkebach .12 - .18 - .24 – B - .12 - .18 - .24 – B PR gradually longer until QRS dropped

Mobitz II .12 – B - .12 - .12 – B - .12 – B PR regular except some QRS are dropped

3º AVB .12 – B - .20 – B – B - .16 - .44 – B - .32 PR interval varies, but not in Wenkebach pattern

Page 94: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Heart Block Review

Bundle Branch Block = QRS is > .11

PR IntervalPR Interval’s are the same- it will either be 1st Degree AVB (QRS for every P) or Mobitz II (May or may not have QRS for every P)PR Interval’s vary – it will either be Wenkebach (pattern) or 3rd Degree AVB (no pattern)

Other Name PR Interval Characteristic

1st ˚AV Block Same PR Interval > .20

2nd ˚AV Block Wenkebach orMobitz I

Different PR Interval gets longer until 1 is dropped

2nd ˚AV Block Mobitz II Same PR Interval is the same when you can measure it, some p waves do not have a QRS after it so you can’t measure a PR Interval for all

3rd ˚AV Block Different PR Interval varies but not in any pattern, P waves and QRS waves are not in any relationship to each other

Page 95: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

• VT

• VFib

• Asystole

• Torsades

• PEA

Which rhythms are a CODE Blue?

Page 96: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Performing a 12 Lead EKG

Page 97: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

I

AVLAVR

III IIAVF

Inferior leads

V1V2

V3 V4

V5

V6

Anterior leads

Lateral leads

12 Lead (views) of the Heart

Page 98: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Skin Prep:Skin Prep:For quality EKGs

You need good contact between the skin & electrode

• Hair interferes with the EKG reading--shaveshave if needed!• Rub with alcoholalcohol to remove body oil• Rub with a dry 2×22×2 gauze to remove old skin cells

Page 99: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

V1 & V2 in the 4th rib space (barely above the nipple to each side of the sternum—not on the sternum!

V4 in line with mid-collarboneV6 in line w/ mid-underarm

V3 will go halfway between V2 & V4

V5 in line w/ underarm front, halfway between V4 & V6

Chest Leads

Page 100: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

RA LA

RL LL

Vb

Va

Limb Lead Placement

Limb leads can be placed anywhere on the limbs and still get the same reading but, AVOID BONY AREAS!

Page 101: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

• Verify the EKG is ordered & you have the correct patient• Explain to the patient what you are doing• Ask patient to lie down• Maintain privacy (close door, pull curtain, uncover minimally)• Prep skin, attach electrodes & wires• If pacemaker is to be turned off, RN must turn it off and RN

must remain in the room until pacemaker is back on.• Ask the patient not to move• Wait for tracings to stabilize• Press “Record EKG”• Verify patient name, room #, and quality tracing• Detach electrodes & wires• Place EKG on chart or give to requesting MD

Page 102: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

If ordered stat, do it right away! Rhythms can change

in a matter of minutes !

Page 103: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

A patient could code at any time…A patient could code at any time… so be prepared—so be prepared—100% Quality Monitoring100% Quality Monitoring

100% of the Time100% of the Time

Page 104: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Top 3 Absolutes!Top 3 Absolutes!

#1—Change batteries

#2—Fix loose electrodes (leads)

#3—Ensure all patients are on the monitor– Make sure staff call you before removing transmitters

– Place a location label on patients off the unit

– Re-attach the transmitters when patients return

– Re-engage alarms by removing “off unit” label

Patients have died when alarms were off & arrhythmias unnoticed

Page 105: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

TransmittersTransmitters• Only use a transmitter that is assigned to your specific pt’s room

– If transmitter is broken or missing, use a spare

– Do NOT allow staff to use transmitter from another room

– Call the House Administrator if additional spares needed

• ALWAYS double-check transmitter # before using

• Insist staff return transmitters immediately upon discharge!

• Inventory transmitters & track missing equipment ASAP

• Notify UM of broken or missing equipment (repairs by Bio-med)

• Clean transmitters & wires between patients (wear gloves)

Make sure staff place soiled transmitters in soiled bin—not on your desk!

Page 106: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Patients who are at greater risk of developing Cardiac problems:–New patients

–Confused patients (often pull off their monitor)

–Recent or current procedure

–Recent EKG change or risky rhythm

Page 107: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

TroubleshootingTroubleshooting

If the heart rhythm is not transmitting correctly:• Check the electrodes & change if necessary• Change the battery• Try a different transmitter box• Try a different set of lead wires

If still no success:• Use a spare transmitter & notify Bio-Med

Page 108: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

DocumentationDocumentation

• If a patient is off the unit when you run strips, – document where the pt is on the strip– leave yourself a note to run a strip when they return

•Run strips every 4 hours (8-12-4)

*Strips must be run within 1 hour of above times•Measure & interpret the 8 o’clock strips & have nurse sign

•Also run strips:–Upon admission or transfer –After invasive procedures (cath lab, OR, endoscopy)–New or risky rhythms

Page 109: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Charting StripsCharting Strips•No poor quality strips in the chart—run another strip

•Cut strips so the name, room #, and time are displayed

•Strips must be 6 seconds in length, but not exceed page width

•Do not fold strips. Cut & write “continuous” on the strip

•Place first strip at bottom of the page, and work upward

•Verify the pt labels match when placing strip on the chart!•Make sure rhythm is not outside grid lines (too tall or small)

•Do not write over the rhythm tracing

•Don’t tape over writing or rhythm. Use double-stick tape.

Page 110: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Patient ConfidentialityPatient Confidentiality

Protect privacy...Please do not look up rhythms or info on patients you (or others) are not treating

(This includes yourself, family, & friends)

Don’t risk it--People have been terminated for this!

Page 111: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

YOU MADE IT!

Congratulations ! ! !

Page 112: Jan Hovekamp, RN, Clinical Educator for Telemetry Services St. Joseph Healthcare 2008

Now……Study….Study….Study

Dysrhythmia’sDysrhythmia’s