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==Psychological stressors== | ==Psychological stressors== | ||
Psychological stressors include | Psychological stressors include: | ||
*Stirring emotional news or witnessing a distressing accident <cite>Lewis</cite>,<cite>Engel44</cite> | |||
*Unexpected pain or threat <cite>Lewis</cite>,<cite>Greenfield</cite> | |||
*Unpleasant smells may trigger vasovagal syncope <cite>Engel47</cite>,<cite>Ganzeboom</cite> | |||
*During blood drawing, | |||
*Vaccination <cite>Braun</cite> | |||
*Instrumentation, pain of the procedure may contribute to vasovagal syncope | |||
*Sharp pain is reported to be an important factor during arterial blood sampling <cite>Rushmer</cite>. | |||
*Blood phobia: ''However, in a patient with blood phobia just thinking or talking about blood drawing may elicit a common faint <cite>Dijk01</cite>'' | |||
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==Post-exercise vasovagal syncope== | ==Post-exercise vasovagal syncope== | ||
Syncope after exercise is often neurally mediated, i.e. post-exercise vasovagal syncope. This condition is typically diagnosed in young fit, furthermore healthy young patients. Foremost, the diagnostic workup of all patients presenting with exercise-related syncope is aimed at excluding dangerous cardiac conditions and includes echocardiography and exercise testing <cite>Krediet04b</cite>. | Syncope after exercise is often neurally mediated, i.e. post-exercise vasovagal syncope. This condition is typically diagnosed in '''young fit, furthermore healthy young patients.''' | ||
Characteristically, syncope may occur while the individual is standing motionless during the first five to ten minutes after exercise <cite>Bjurstedt</cite>. Especially athletes in the (ultra) endurance sports are at risk for post exercise vasovagal syncope e.g. after marathon swimming (Finlay et al., 1995) or marathon running (Tsutsumi & Hara, 1979;Holtzhausen & Noakes, 1995;Holtzhausen & Noakes, 1997). | Foremost, the diagnostic workup of all patients presenting with exercise-related syncope is aimed at '''excluding dangerous [[Cardiac syncope|cardiac conditions]]''' and includes echocardiography and exercise testing <cite>Krediet04b</cite>. | ||
Vasovagal syncope after routine treadmill testing is rare (estimated 0,2% (Schlesinger, 1973)). However, when treadmill testing is immediately followed by passive head-up tilt testing, this percentage can increase up to 50-70% (Bjurstedt et al., 1983). Vasovagal syncope after exercise is considered to be a benign occurrence (Krediet et al., 2004b). | Characteristically, syncope may occur while the individual is '''standing motionless''' during the first five to ten minutes after exercise <cite>Bjurstedt</cite>. Especially athletes in the (ultra) endurance sports are at risk for post exercise vasovagal syncope e.g. after marathon swimming (Finlay et al., 1995) or marathon running (Tsutsumi & Hara, 1979;Holtzhausen & Noakes, 1995;Holtzhausen & Noakes, 1997). | ||
Vasovagal syncope after routine treadmill testing is rare (estimated 0,2% (Schlesinger, 1973)). However, when treadmill testing is immediately followed by passive head-up tilt testing, this percentage can increase up to 50-70% (Bjurstedt et al., 1983). | |||
Vasovagal syncope after exercise is considered to be a benign occurrence (Krediet et al., 2004b). | |||
===Muscle pump=== | ===Muscle pump=== |