The common cold is generally mild and self-limiting with most symptoms generally improving in a week. Half of cases go away in 10 days and 90% in 15 days. Severe complications, if they occur, are usually in the very old, the very young, or those who are immunosuppressed.
Types of sick sinus syndrome and their causes include: 1  Sinoatrial block. Electrical signals move too slowly through the sinus node, causing an abnormally slow heart rate. 2  Sinus arrest. The sinus node activity pauses.  Bradycardia-tachycardia syndrome.
Best Answer: Cardiopulmonary arrest among infants and children is typically caused by progressive tissue hypoxia (low oxygen) and acidosis (buildup of acids in the blood) as the result of respiratory failure and/or shock (severely low blood pressure.) Causes of respiratory failure and shock leading to cardiopulmonary arrest in these age groups ...