Causes of tachycardia

Update: December 2018

Tachycardia is not a disease, but a symptom that
characterized by an increase in the frequency of contractions of the heart muscle
over 90 beats / minute. Children under 7 have heart palpitations
is the physiological norm, when the pulse is more than 100 beats / min,
adolescents the norm is 80-100.

Tachycardia is considered a variant of the norm in a healthy person with
emotional stress, fatigue, lack of oxygen, with
taking certain medications during intensive
physical activity, while taking alcohol or coffee. Manifests itself
such a symptom of anxiety, sensation of rapid heartbeat and
pulsation of cervical vessels, may be fainting or dizziness.
If pathological tachycardia occurs, the causes of
diseases of the cardiovascular system or other diseases
organs and systems that we list in this article.

There are sinus and paroxysmal tachycardia, because
matter source that generates electrical heart

  • Sinus tachycardia – it occurs with an increase in activity
    sinus node
  • Пароксизмальная тахикардия —  может быть из синусового
    node, from the atria, from the atrioventricular node or from the ventricle,
    when this occurs, a kind of resonance of the natural frequencies of blood vessels
    and frequencies of the pacemaker.

Paroxysmal proceeds in the form of paroxysms, that is, seizures,
that suddenly start and just as suddenly stop, can
last a few minutes or several days.

With the onset of paroxysmal tachycardia may develop
life-threatening form when the frequency of contractions exceeds 200
beats / minute, it is accompanied by loss of consciousness, pre-unconscious
condition and can cause death. In such situations, should
Immediately call an ambulance. Even in the case when paroxysm
self passed, should then be sure to turn to
to the doctor.

Cardiac – intracardiac causes

Early symptom of left ventricular dysfunction or
congestive heart failure is sinus tachycardia. To reasons
intracardiac tachycardias should be attributed to:

  • Congestive and acute heart failure – besides
    tachycardia of the person is worried about shortness of breath, fatigue,
    sweating, swelling of the lower extremities, pale skin
    covers. Most often, tachycardia occurs with left-sided cardiac
  • Severe Angina
  • Myocardial infarction – this can be both bradycardia and
    tachycardia, a characteristic symptom of a heart attack is pain, giving away
    in the left hand, jaw, shoulder, chest pain.
  • Heart defects
  • Cardiosclerosis
  • Bacterial endocarditis
  • Myocarditis infectious, rheumatic, toxic and
    other origin
  • Cardiomyopathy
  • Exudative and adhesive pericarditis
  • Pulmonary embolism – in front of this dangerous condition, as
    as a rule, there is pain in the chest, shortness of breath.

There is no such disease as tachycardia – this is just a symptom of the masses.
diseases. When should I see a doctor? When no visible on
then the causes, after eating or at night, heart palpitations,
or in cases where after jogging, climbing stairs,
Emotional stress has passed 20-30 minutes, and the heartbeat is not
is being restored. Very handy for timely detection.
problems regularly measure blood pressure with an electronic tonometer, which
points and palpitations.

If a person has a tachycardia attack, the ambulance will still
On the way, doctors recommend taking 40 drops of Corvalol or
Valokordin Also facilitates the state of a glass of cool water or
washing with cold water, taking a horizontal position without
pillows. This method can also help – if you press your fingers on
eyeballs and then release.

Extracardiac – extracardiac causes of adult tachycardia
and children

Adrenal insufficiency is a disease other than rapid
palpitations are characterized by weak pulse, weakness, increased
fatigue, irritability, sometimes illness is accompanied
vomiting, nausea, dyspepsia, weight loss, olfactory impairment,
taste (more about adrenal insufficiency).

Pheochromocytoma – with adrenal gland tumor jumps production
adrenaline also manifest as tachycardia, headaches,
differences in blood pressure, increased sweating, panic attacks, anger,
tremor, nausea, insomnia.

Disorders of the autonomic nervous system are emotional.
tachycardia, which occurs in patients with neurosis, psychosis and
other diseases of the nervous system.

Endocrine disorders – with an increased level of hormones
thyroid gland also appears nervousness, sweating,
weight loss with good appetite, increased heartbeat,

Diabetic ketoacidosis – with this disease occurs
impaired breathing, weak pulse, tachycardia, taste, and
fruit smell in the mouth, weakness, vomiting, abdominal pain – this is dangerous
condition of the body when a person can fall into a coma.

Анемия — одной из причин тахикардии у взрослых and children может
to be low hemoglobin, besides for anemia is characteristic
pallor of the skin, shortness of breath, weakness.


Hypoglycemia – with low blood sugar (see glucose
in the blood – the norm) there is a drop in body temperature, quickens
palpitations, impaired consciousness, headaches, double vision
in the eyes, increased sweating, constant hunger,

Hyponatremia – with a lack of sodium in the blood is very rare, but
tachycardia may occur, while the person is thirsty,
nausea, muscle twitching, can be seizures and

Острая сосудистая недостаточность —  при большой
hemorrhage, shock, fainting also occurs
heartbeat. When a patient has blood loss, the pulse becomes weak,
body temperature drops, there is thirst, dry skin,
dry mouth, anxiety.

Hypoxia – with a lack of oxygen may be a violation
coordination of movements, cyanosis of the skin, fainting
condition, rapid breathing.

Pneumothorax – with the penetration of air into the pleural cavity
there is tachycardia, shortness of breath, dry cough, cyanosis, reduction
chest movements during breathing, wheezing.

Any infectious and inflammatory diseases with high
температурой —  ангина, туберкулез, воспаление легких, любая
focal infection.


COPD, bronchial asthma – chronic obstructive diseases
bronchi and lungs are also accompanied by rapid breathing, wheezing,
shortness of breath, cough.

Severe allergic reactions, anaphylactic shock – also
accompanied by pressure drop, shortness of breath, spasm and swelling
the respiratory tract, while the person needs an emergency
medical care.

Гипертонический криз —  скачек АД кроме учащенного
palpitations may be accompanied by nausea, vomiting, nasal
bleeding, seizures, dizziness, headache, ringing
in the ears.

Physiological causes – with severe painful attacks, with
physical exertion or emotional experience tachycardia
is physiological and with the weakening of the provoking factor,
she passes by herself.

Other reasons

Pharmacological or toxic sinus tachycardia –
Causes may be caffeine in high doses, alcohol,
nicotine, as well as in the treatment of certain drugs
– aminophylline, diuretics, corticosteroids, antihypertensives and
pr .. They cause reflex tachycardia, through arousal
sympathetic nervous system.

Неадекватная синусовая тахикардия —  она может возникать и
at rest, while the person does not have enough air and
heart palpitations are felt, this phenomenon is considered today
little-studied and rare disease.

The withdrawal syndrome in alcoholics – this tachycardia is combined with
fever, sweating, lack of appetite, anxiety,
insomnia, irritability, aggression,
the occurrence of hallucinations.

Anxiety and fear – any emotional stress, excitement,
experience, fear, dizziness, chest pain,
rapid breathing, nausea, after a person calm down
symptoms go away.

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