Clinical Manifestations
When sleeping, the patient exhibits a breathing pattern that is staggered and clearly labored. It sounds like gasping or aggressive snoring like an involuntary gasp reflex. Occurs ~every 6 seconds. May accompany cyanosis.
Agonal Respiration
This condition may also impact the nervous system, causing this sudden surge of abnormal electrical activity in the brain
Seizure
One of the fastest tests one can run on the heart. An electric current tracking machine which can show signs of unusual signals in the heart.
12 Lead Electrocardiogram (ECG)
An anti-arrhythmic medication administered to treat some types of irregular heartbeats. Can also be used to treat malaria.
Quinidine
The condition may explain this leading cause of death in infants aged 1 month to 1 year.
Sudden Infant Death Syndrome (SIDS)
This medical event is caused by a sudden drop in blood pressure preventing blood flow to the brain, and is a common symptom in this disorder
Syncope (fainting)
Elevated body temperature which can worsen or trigger this condition
Fever
This type of test involves wearing a portable ECG for a full day and night.
Holter Monitor Test
Procedure where you heat-kill a portion of tissue of the heart to prevent it from causing abnormal rhythms.
Cardiac ablation / Catheter ablation / radio frequency ablation
This disease is more common in men, and researchers think it may be because of this hormone
Testosterone
This time of day, associated with increased vagal tone, is when life-threatening events are most likely to occur in this condition
Night time, during sleep
This condition is thought to be caused by an issue with this process in which the heart muscle cell’s membrane potential returns to normal
Repolarization
A type of drug test that involves administering a sodium channel blocker like ajmaline to reveal diagnostic ECG patterns.
Drug Challenge Test
Treatment often involves avoiding these substances as they can trigger symptoms
Alcohol and Marijuana
This disease is more prevalent in people with ancestry in this region with countries like Brunei, Myanmar, Cambodia, Laos, Malaysia, and the Philippines.
Southeast Asia
This abnormal heart rhythm is one of the two deadly heart rhythms (Fatal cardiac arrhythmias) and is often suffered by those with this syndrome.
ventricular fibrillation (V-fib)
A genetic mutation disrupts the flow of this ion into the heart, disrupting electrical signals.
Sodium
This test involving placing a catheter inside the heart through the femoral vein to measure electrical activity can be used if diagnosis is still unclear
Electrophysiology Testing
This medication is a beta-adrenergic agonist that can return ECG patterns to normal in people suffering from an arrhythmia.
Isoproterenol
A portable emergency shocking device which may restore normal heart rhythm of a patient suffering from this syndrome.
AED
The most lethal outcome of this condition; the heart stops beating, normally caused by an electrical issue leading to death with seemingly no cause
Sudden Cardiac Death
The SCN5A gene is mutated which causes a lack of function of these important channels for depolarization
Voltage-gated sodium channels
The right precordial leads of an ECG will show elevation of this segment if the ECG, also commonly found in heart attacks
ST Segment
Implanted device which is proven treatment to prevent sudden death from ventricular arrhythmias and this condition
Implantable cardioverter-defibrillator
This condition is synonymous with this disease characterized by young adults suddenly dying during sleep
Sudden Unexplained Nocturnal Death Syndrome (SUNDS)