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Tachycardia is a fast heart beat, which is greater than 100 beats per minute in an adult. When the heart rate is only slightly elevated, it does not cause any major problems. However when it is beating extremely fast (greater than 150 beats per minute in an adult), it can result in loss of consciousness. This is because if the heart is beating too fast, it does not have time to fill up with blood in between heart beats, so a heart that is beating that quickly is actually pumping out less blood than one that is beating at a normal rate.
When the heart is pumping out less blood, not enough blood gets to the brain, and therefore not enough oxygen to the brain, since oxygen is carried in the blood. This is what causes loss of consciousness in extreme tachycardia. This is potentially a life threatening emergency, and needs to be treated in a hospital immediately.
What else can I help you with?
What causes loss of consciousness in a person with diabetic ketoacidosis?
high levels of ketone and glucose can cause loss of consciousness in dka
Does schizophrenia involve general weakness and blacking out or loss of consciousness?
Schizophrenia itself does not involve those symptoms, but the medications associated with schizophrenia can cause weakness and loss of consciousness. Please see your doctor immediately if you lose consciousness without any evident non-serious cause.
Can loss of consciousness lead to loss of memory?
It depends upon whether they hit their head or not. A bump to the head can cause memory loss. Another cause of memory loss is stress or anxiety.
Does Nifedipine cause tachycardia?
no
Can pneumonia cause tachycardia?
Pneumonia, as any other infectious process in your body, can cause tachycardia. Sometimes, patients with pneumonia also become dehydrated due to lack of fluid intake. This also can lead to tachycardia.
Why does blood volume loss cause tachycardia?
Because the heart itself needs a blood supply in order to function. If the heart is starved of its own blood - it will stop.
Can diabetes cause tachycardia?
Yes it can indirectly
Can bacon or sausage cause superventricular tachycardia?
No. I have it, and you are born with it.
What is the medical term meaning brief loss of consciousness caused by a lack of oxygen in the brain?
Syncope is a brief loss of consciousness due to lack of oxygen.SyncopeSyncope - Temporary loss of consciousness caused by a lack of blood supply to the brain.
Do you need to inform the DVLA that you have asthma?
No you do not unless your asthma is so severe that it can cause loss of consciousness, in which case you are legally obligated to do so
What can be done if choking occurs?
Tracheal obstructions can cause partial to full blockage of the airway. If the obstruction is not removed or expelled, it can cause of loss of consciousness or death.
Can low blood sugar cause syncope?
Yes, low blood sugar can cause syncope, which is a temporary loss of consciousness due to a lack of blood flow to the brain.
