Causes of syncope
- Deficiency in the quantity of circulating blood as in-
a. Haemorrhage- or direct loss of a large quantity of blood due to injury or such diseases as gastrict or duodenal ulcer, enteric fever, etc.
b. Dehydration-or loss of a large quantity of the fluid constituent of the blood as in algid type of malaria cholera, and bacillary dysentery as arsenic and po1sonings.well as in
- Deficiency in the quantity of blood-as in secondary anaem1a due to such diseases as ankylostomiasis and kala-axar.
- Diseases of the he art- myocardial or valvular.
- Shock-causing sudden inhibition of the heart due to depression on the central nervous system from external or internal stimulus.
Post-mortem signs syncope :
- Both sides of the heart-may be either empty or full depending on the stoppage of the organ occur-ring during systole or diastole.
- If death be due to asthenia-the heart is usually flabby, soft and fully relaxed with both ventricles Containing ante-mortem and post-mortem clots.
- Other organs are-as a rule. more or less conges-ted ow1ng to insufficient oxygenation of the blood from feeble circulation.
- When, on the other hand, death occurs as a result of sudden stoppage of the heart, all the internal organs are found to be in normal condition.