|
Palpitations
Narrated Al-Bara 'bin `Azib:
The
Prophet said to me, "Whenever you go to bed perform ablution like that for the
prayer, lie or your right side.
A palpitation is
an increased awareness of the normal heart beat or the sensation of slow or
rapid heart rate or an irregular heart rhythm. The normal heart beat is sensed
when the patient is anxious, excited, exercising, or lying on the left side. The
most common arrhythmia’s to be felt as palpitations are premature ectopic beats
and paroxysmal tachycardias.
The commonest
cause is anxiety. Most normal people have experienced palpitations
briefly as a result of an alarming experience such as narrow escape from an
accident. More prolonged emotional disturbances more common in the anxious but,
once the palpitation has developed, it can readily induce further anxiety by
arousing suspicions of heart disease in the patient’s mind. Thus a vicious
circle is closed and Da Costa’s Syndrome results. In anxiety the
mechanism of the palpitation is an increase in the force of cardiac
contractions, often combined with tachycardia; both are mediated via
catecholamine release. Palpitation as a whole can be considered according to
whether it is due to an increase in the force, or more precisely in the type, of
contraction or to a change in the type, of contraction or to a change in the
rate or rhythm of the heart.
Palpitation is a
feature of a group of cardiac lesions, which have in common an increase in
the output of one or other ventricle. Thus, in aortic regurgitation, mitral
regurgitation, atrial and ventricular septal defects, and persistent ducts
arteriosus, a complaints of palpitation is common. This is not the case,
however, in uncomplicated mitral stenosis, hypertension and ischaemic heart
disease in which palpitation, if present is due to superadded anxiety and not to
the cardiac lesion itself. High – output states, in general, are also
causes of palpitation which, as in the case of anxiety, is due both to the
increase in the force of contraction and to tachycardia. In thyrotoxicosis,
particularly, palpitation is a very common symptom but it may also be a feature
of severe anaemia, arteriovenous fistula, beriberi and corpulmonale.
Catecholamine
release as cause of palpitation has already been mentioned. This particularly
prominent in phaeochromacytoma; both adrenaline and no
r
adrenaline, but particularly the
former, increase the force of ventricular contraction. Adrenaline also causes
tachycardia but the release of nor
adrenaline, causing a sharp rise
in blood pressure
Comment
Since the
palpitation occurs during stress or exercised which are reflex to abnormal
situation which are related to hormonal effect or hyper activity of
nervous system
also we should say the lying in the left side has some thing related to either
hormonal or nervous system abnormality or both.
|