INSETS: The etiology and pathophysiology of syncope;Indications for hospital admission;Etiologies of syncope.doi:10.1007/s00059-014-4087-0Hupert, NathanielKapoor, Wishwa NPatient Care
5:30 Syncope: Definition, Etiology, and Causes 10:03 Neurally Mediated Syncope: Definition, Pathophysiology, and ClassificationClinical Presentation Presenting symptoms Witnessed or unwitnessed loss of consciousness May or may not be preceded by prodromal symptoms May or may not be associated with an...
Activity prior to syncope may give a clue as to the etiology of symptoms. Syncope may occur at rest; with change of posture; on exertion; after exertion; or with specific situations such as shaving, coughing, voiding, or prolonged standing. Syncope occurring within 2 minutes of standing sugges...
Nowadays, itis suggested that the etiology of the neurocardiogenic syncope isrelated with hormonal alterations in the central nervous system. Manymechanisms have been implicated involving central and peripheralparticipation. Recent studies suggest that the central serotonergicsystem may play an important role...
The physiological mechanism of vasovagal syncope is still not fully understood. There are some theories explaining its etiology, but the principal cause remains unknown7,8,9,10. A typical diagnostic procedure in syncopal episodes is based on Head Up Tilt Test (HUTT) usually performed with Task ...
Syncope is a symptom defined as a transient, self-limited loss of consciousness, often leading to a fall with loss of muscle tone. Syncope in elderly individuals is common, recurrent, and can often be disabling, and it may be associated with a risk of sudden death, but its etiology is of...
Based on the findings of a recent study, the possibility of pulmonary embolism should be considered in patients hospitalized for syncope, whether or not an alternative etiology for syncope is identified. This article focuses on the neurologic diagnosis, differential diagnosis, physiology, and management...
It is characterized by rapid onset, short duration, and spontaneous complete recovery. Understanding the pathophysiological basis for the syncopal episode is the most useful tool for etiology-based treatment and risk assessment. The classification of syncope based on pathophysiology is discussed. Tilt ...
Vasovagal syncope (VVS) is the most common presentation of syncope, and its diagnostic criteria include:(1) absence of any other evident etiology for syncope or presyncope,(2) positive response to head-up tilt test with evident vasovagal reaction (hypotension and/or bradycardia), and (3) no ...
In such patients, it is important to elucidate the pathophysiology of syncope prior to diversion. Postural hypotension is the most common etiology of in-flight syncopal events. However, individuals without any underlying autonomic dysfunction can still experience syncope from hypoxia also known as ...