The temporary loss of consciousness in a particular kind of situation. (Syncope is temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating or defecating or coughing. The reaction also can be due to the emotional stress of fear or pain.
In these situations, people subject to vasodepressor syncope often become pale and feel nauseated, sweaty, and weak just before they lose consciousness.
Vasodepressor syncope is caused a reflex of the involuntary nervous system called the vasovagal reaction. The vasovagal reaction leads the heart to slow down (bradycardia) and, at the same time, it leads the nerves to the blood vessels in the legs to permit those vessels to dilate (widen). The result is that the heart puts out less blood, the blood pressure drops, and what blood is circulating tends to go into the legs rather than to the head. The brain is deprived of oxygen and the fainting episode occurs.
A vasovagal reaction is also called a vasovagal attack. And vasodepressor syncope is also called situational syncope, vasovagal syncope, and Gower syndrome.
A condition in which fingers or toes are joined together. Syndactyly can involve the bones (bony syndactyly) or just the skin (cutaneous syndactyly, or webbing).
- Syndactyly, bony
A condition in which the bones of fingers or toes are joined together.
- Syndactyly, complete
A condition in which fingers or toes are completely joined together, with the connection extending from the base to the tip of the involved digits.
- Syndactyly, cutaneous
A condition in which fingers or toes are joined together and the joining involves only the skin, not the bones.
- Syndactyly, partial
A condition in which fingers or toes are partially joined together. Syndactyly can involve the bones or just the skin. With partial syndactyly, the connection extends from the base only partway up the involved digits.