Related Experiment Video
Updated: May 27, 2026

14:09
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Published on: March 21, 2013
Neurally mediated syncope presenting with paroxysmal positional vertigo and tinnitus
Fumiyuki Goto1, Tomoko Tsutsumi, Iwao Nakamura
1Department of Otorhinolaryngology, Hino Municipal Hospital, 4-3-1 Tamadaira Hino-shi, Tokyo, Japan. amifumi@bc5.so-net.ne.jp
Auris, Nasus, Larynx
|November 9, 2011
Summary
A patient
Area of Science:
- Neurology
- Cardiology
Background:
- Benign paroxysmal positional vertigo (BPPV) is a common cause of vertigo.
- Misdiagnosis can occur if symptoms are atypical or patient history is not thoroughly investigated.
Observation:
- A 72-year-old man presented with positional vertigo and tinnitus, initially suspected as BPPV.
- The patient's symptoms, including positional vertigo with pyrosis, were actually presyncope, and he feared diagnostic maneuvers.
- Provocation tests for BPPV were negative, and conventional treatments were ineffective.
Findings:
- Cardiovascular investigation revealed paroxysmal bradycardia, leading to a diagnosis of neurally mediated syncope.
- Implantation of a pacemaker resolved the patient's dizziness and presyncope symptoms.
- This case highlights the importance of detailed patient history and ruling out cardiac causes.
Implications:
- Thorough clinical history is crucial for accurate diagnosis, especially when patients struggle to articulate symptoms.
- Cardiovascular disorders, particularly neurally mediated syncope, should be considered in patients with suspected BPPV who lack characteristic nystagmus.
- Prompt cardiac evaluation can prevent misdiagnosis and ensure appropriate treatment for potentially serious conditions.
Related Concept Videos
Equilibrium and Balance
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
The Vestibular System
The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
Dysrhythmias II: Classification of Tachyarrhythmias
Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
Major Somatic Sensory Pathways
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...
Mitral Valve Prolapse II: Assessment and Management
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular tachycardia.
Synesthesia
Synesthesia is a remarkable condition where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway. People with synesthesia experience a blending or crossing of their senses, such as sight and sound, leading to cross-modal sensations. In this condition, the stimulation of one sense, such as hearing a number or musical note, triggers an experience of another sense, like sensing a specific color, taste, or smell. People...
