skip the beat · • occurs every 2-3 weeks for a total of 6-7 episodes. the most recent episode...
TRANSCRIPT
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Skip the BeatPalpitations and Syncope in Childhood
19th Interregional SymposiumNovember 2, 2018Session B, 11:15-12:30
John-Charles Loo, MDPediatric Cardiology, SCPMG--OC
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Purpose• Demystify the pediatric cardiologist’s job• History, history, history• Red flags• Tools to explain diagnosis• Reassurance with confidence• Anticipatory guidance
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Palpitations
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A 14 year old female has had palpitations for many years.
What are some questions you would ask to differentiate normal physiology from pathology?
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A 14 year old female has had palpitations for many years.
What does she mean by “palpitations”?
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A 14 year old female has had palpitations for many years.
How long does it last?
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A 14 year old female has had palpitations for many years.
Does it occur at exercise or at rest?
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A 14 year old female has had palpitations for many years.
Is it related to certain situations like when nervous? At bedtime? Wakes up at night with it? When she stands up?
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A 14 year old female has had palpitations for many years.
How does it stop?
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A 14 year old female has had palpitations for many years.
Palpitations are described as a single thump or skipped beat. It occurs 2-3 times per week. It occurs usually while on her phone or lying down at night for bed. She plays soccer for club and her school, and it has never occurred during those or during PE. One time she had several of these over an hour period. It usually “catches her breath”, but just for the moment that the beat occurs.
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A 14 year old female has had palpitations for many years.
Palpitations are described as a single thump or skipped beat. It occurs 2-3 times per week. It occurs usually while on her phone or lying down at night for bed. She plays soccer for club and her school, and it has never occurred during those or during PE. One time she had several of these over an hour period. It usually “catches her breath”, but just for the moment that the beat occurs.
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Palpitations• Order of symptoms, focus on the first (rule of 1)• Single pound or skip vs rapid beat? • How does it stop? Gradual or abrupt?• Exercise or at rest?• How often?• If the patient is anxious, that’s what it is.
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Palpitations
The feeling of an abnormal heart beat
fast, heavy, or skipped (irregular)
Consider “normal” first
1. Normal is usually not felt2. Slow is not felt either3. Fast or extra is felt
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So what are we looking for?
Fast or Extra (which is a single extra fast)
The diagnosis will either be:
Normal (physiologic), sinus rhythm or tachy
Normal (extra, but benign)
Abnormal, tachycardia
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Normal and abnormal• Normal or physiologic
– Sinus rhythm– Sinus tachycardia– Premature Atrial/Junctional/Ventricular Contractions
• Abnormal– SVT/WPW– Ventricular arrhythmia
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Royal Children’s Hospital
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Premature ectopic beats● PAC = premature atrial contraction
■ Above the AV node■ Very common in newborns
● PJC = premature junctional contraction■ At the AV node■ Less common
● PVC = premature ventricular contraction■ Below the AV node■ <10% frequency benign
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PVCs● Feels like a single thump, which is the beat after the
PVC● Sometimes “catches my breath”● Very common, newborns and teens, but not everyone
feels them● Increased frequency after exercise is normal
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Asymptomatic normal heart rhythms
• Sinus arrhythmia is normal variation of sinus rate with respiration.
• Sinus bradycardia is <90 in neonate and <60 in older, but much variation is seen
• Wandering atrial pacemaker is shift in pacemaker from sinus node to another. It is a normal variant.
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Jack is a 15 year old male with palpitations• The first episode occurred 2 months ago. • Occurs every 2-3 weeks for a total of 6-7 episodes. The most recent
episode was 2 weeks ago. • Episodes generally occur while playing volleyball, typically with
jumping or landing. • Additional symptoms occurring after the onset include: dizziness. • It lasts 3-8 minutes. The onset is abrupt and offset is abrupt. • It is too fast to count.
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Jack is a 15 year old male with palpitations• The first episode occurred 2 months ago. • Occurs every 2-3 weeks for a total of 6-7 episodes. The most recent
episode was 2 weeks ago. • Episodes generally occur while playing volleyball, typically with
jumping or landing. • Additional symptoms occurring after the onset include: dizziness. • It lasts 3-8 minutes. The onset is abrupt and offset is abrupt. • It is too fast to count.
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Natalie is a 9 year old with palpitations
• She had an episode of palpitations two days ago while at the beach.• She was building sand castles and felt her heart beating fast. She
dried off, ate lunch, and mother noticed her heart beating fast also. • Later she went home. Her father also felt her heart beat and noted it to
be fast. She was taken to see the doctor. • The total time was about 4 hours. She was seen by her pediatrician,
and HR was 180. • She was told to take a deep breath and hold it for a little while. After a
few deep breaths, it came down to 80-100.
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Natalie is a 9 year old with palpitations
• She had an episode of palpitations two days ago while at the beach.• She was building sand castles and felt her heart beating fast. She
dried off, ate lunch, and mother noticed her heart beating fast also. • Later she went home. Her father also felt her heart beat and noted it to
be fast. She was taken to see the doctor. • The total time was about 4 hours. She was seen by her pediatrician,
and HR was 180. • She was told to take a deep breath and hold it for a little while. After a
few deep breaths, it came down to 80-100.
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● Rate usually >160● In young infants, rate is 200-300● Offset is sudden● If SVT sustained (hours), may have heart
failure symptoms○ Less than that is well tolerated
Supraventricular Tachycardia
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SVT
● “Is there anything you can do to stop it?”
● Vagal maneuvers to break SVT○ Breath holding, ice water, valsalva, posture
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Types of SVT
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Ventricular tachyarrhythmias● At least 3 ventricular beats at >120 bpm● Much less common than SVT● “Increased” frequency (especially benign ones)● Ventricular tachycardia vs accelerated ventricular rhythm
– Sometimes associated with myocarditis, anomalous coronary, ARVD, MVP, tumor, cardiomyopathy, long QT, WPW, drugs, post surgical
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Palpitations--Instructions for families
• Teach them how to take a pulse, give ranges○ Rates can go up to 140 physiologically (emotion)○ Gradual decrease over a few minutes○ Concern for faster rates or sudden offset
• Hydration, avoid caffeine• Reassurance: symptoms may resolve or feel more normal• Return for persistent symptoms or clearly not anxiety/stress
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What if I think they might have something...
??????????
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ER in past...
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Caffeine break...
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Syncope
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SyncopeA 15 year old female has episodes of
syncope…
--what do we do next?
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SyncopeA 15 year old female has episodes of
syncope…1. Obtain an ECG2. Order a holter monitor3. Order an echocardiogram4. Obtain more history
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SyncopeA 15 year old female has episodes of
syncope…1. Obtain an ECG2. Order a holter monitor3. Order an echocardiogram4. Obtain more history!
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A 15 year old female has syncope• Symptoms have occurred over the last year.• Once while playing soccer she played the entire game. Near the end, she
headed the ball, she saw bright dots, got dizzy, lost her balance, and fell. Vision was black but she could still hear. She had something to drink and felt better.
• One time she took a hot shower for 20 minutes. She got out, bent down, and when she stood back up, she felt dizzy, vision dimmed and then went black, and she passed out for a few seconds.
• Another time while having hair brushed, she got very dizzy with vision changes.• She gets dizzy upon standing quickly, especially in am.• Diet/day: 2 cups of water. 1 cup of juice. 2 meals a day, skipping breakfast.
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How many episodes of syncope?
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Are there any concerning details of the history?
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What are the reassuring features?
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A 15 year old female has syncope• A few episodes over the last year.• Once while playing soccer she played the entire game. Near the end, she
headed the ball, she saw bright dots, got dizzy, lost her balance, and fell. Vision was black but she could still hear. She had something to drink and felt better.
• One time she took a hot shower, 20 minutes. She got out, bent down, and when she stood back up, she felt dizzy, vision dimmed and then went black, and she passed out for a few seconds.
• Another time while having hair brushed, she got very dizzy with vision changes.• She gets dizzy upon standing quickly, especially in am.• Diet/day: 2 cups of water. 1 cup of juice. 2 meals a day, skipping breakfast.
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A 15 year old female has syncope• A few episodes over the last year.• Once while playing soccer she played the entire game. Near the end, she
headed the ball, she saw bright dots, got dizzy, lost her balance, and fell. Vision was black but she could still hear. She had something to drink and felt better.
• One time she took a hot shower, 20 minutes. She got out, bent down, and when she stood back up, she felt dizzy, vision dimmed and then went black, and she passed out for a few seconds. She spontaneously recovered.
• Another time while having hair brushed, she got very dizzy with vision changes.• She gets dizzy upon standing quickly, especially in am.• Diet/day: 2 cups of water. 1 cup of juice. 2 meals a day, skipping breakfast.
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One point:
Is it vasovagal or not?
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What is vasovagal syncope?
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Vasovagal syncope
“Aka”Neurocardiogenic syncopeOrthostatic hypotensionPostural hypotensionDysautonomia
Related: Postural Orthostatic Tachycardia Syndrome
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Vasovagal syncope
Simply put...
“I stood up, I got dizzy, I passed out”
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Vasovagal syncope
How does it happen?
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Am J of Cardiol
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Annals of IM
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1. Stand up, blood goes to legs2. Less blood to the head3. You get dizzy, you pass out
The simple minded cardiologist thinks of it this way:
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Vasovagal
So blood vessels and the nerves controlling the blood vessel and blood pressure, must be in concert in order to not pass out.
Vaso = vessel
Vagal = vagus nerve, autonomic, automatic, or parasympathetic nervous system
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Syncope Questions
● Do you get dizzy when you stand up quickly● Is it better when you lie down or stand slowly?● Can you avoid passing out?● Do you fully pass out or can you still hear?● “Was it a hot day”● “Did you eat or drink less that day”● “Were you sick that day”
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To worry or not to worry...
• Postural, not worried• Common triggers:
Church Health class Pain (head, stomach)Seeing blood Hair brushing Reaching or head turnMicturation Defecation ShowerChoir
● Dizziness and syncope are of minimal concern unless it is during exertion or palpitations precede it
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EBMedicine.net
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Physical exam?
Vital signs:
Orthostatic heart rate--20 bpm
Blood pressure--20/10
Cardiac exam
Murmur increases while standing
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Most times history and exam are enough:
Vasovagal syncope
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Vasovagal (pre)syncope recommendations
● Salt intake○ Electrolyte drinks ○ Gatorade, G2, Powerade, Powerade No Sugar○ Add a little salt to veggies, bag of chips, salt tablets
● Positional awareness○ Stand slowly○ Sit or lie down if dizzy○ Don’t stand for long periods
● Hand grip, elbow flex, cross legs● Sleep on elevated pillows, compression socks/stockings
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Bottom line - syncope• It’s almost always vasovagal• If you think it’s vasovagal, I agree• Prodrome is very reassuring• Concerning symptoms can usually be
explained with more detail• Exertional syncope is concerning (overexertion)
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Who should get an EKG?
“All” patients with syncope should have an EKG
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Who should get an EKG? Why?
What cardiac diagnoses may not be obvious by exam but are obvious by EKG?
Long QTHypertrophic CardiomyopathyHeart BlockBrugada SyndromeArrhythmogenic right ventricular dysplasia
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When to worry
• “Never” -- except when something’s weird
• Convincingly reassuring the family– Up to 1 out of 3 children pass out. My wife and son both passed
out in front of me. Some pass out when they see blood.– Explain physiology– Treatment plan– Things to watch for: no prodrome, palpitations– Let them play
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BeyondVasovagalSyncope
Cardiac syncope
POTS
--Postural Orthostatic Tachycardia Syndrome
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1. Rate2. P wave
a. axisb. Htc. Width
3. PR interval4. Q wave5. QRS
a. Axisb. Heightc. width
6. ST segment7. QT interval8. T wave
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“Borderline prolonged QT interval”=
NORMAL
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QTc• Bazett’s
Formula• QTc should be
<450
• Use lead II• Use RR interval
preceeding QT measured
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QTc example = 388
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That’s Long QT, ARVD, Brugada, Catecholaminergic VT
The fast ventricular arrhythmias
causing syncope without
prodrome
Slower ventricular arrhythmias
can cause palpitations and then
syncope
What about Hypertrophic Cardiomyopathy?
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Summary of concerning syncope events:
1. Syncope without warning 2. Syncope preceded by palpitations3. Exertional syncope
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BeyondVasovagalSyncope
Cardiac syncope
POTS
--Postural Orthostatic Tachycardia Syndrome
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What is Postural Orthostatic Tachycardia Syndrome?
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Dysautonomia International
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Vasovagal syncope
“Aka”Neurocardiogenic syncopeOrthostatic hypotensionPostural hypotensionDysautonomia
Related: Postural Orthostatic Tachycardia Syndrome
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Dysautonomia
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AAFP 2012
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Dysautonomia International
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POTS Treatment
● Exercise● Increase fluid intake● Salt● Compression devices● Muscle tensing● Diet● Routine
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POTS treatment--medication
Beta blocker--heart rate control
Midodrine--alpha-1 antagonist
Fludrocortisone (Florinef)
Anti-depressants