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003429. In medicine, the caloric reflex test (sometimes termed 'vestibular caloric stimulation ') is a test of the vestibulo-ocular reflex that involves irrigating cold or warm water or air into the external auditory canal. This method was developed by Robert Bárány, who won a Nobel prize in 1914 for this discovery.
Nystagmus as seen in a case of ocular albinism. The cause of pathological nystagmus may be congenital, idiopathic, or secondary to a pre-existing neurological disorder.It also may be induced temporarily by disorientation (such as on roller coaster rides or when a person has been spinning in circles) or by some drugs (alcohol, lidocaine, and other central nervous system depressants, inhalant ...
The Romberg test is a test of the body's sense of positioning ( proprioception ), which requires healthy functioning of the dorsal columns of the spinal cord. [ 1] The Romberg test is used to investigate the cause of loss of motor coordination ( ataxia ). A positive Romberg test suggests that the ataxia is sensory in nature, that is, depending ...
ICD-9-CM. 75.34. A nonstress test ( NST) is a screening test used in pregnancy to assess fetal status by means of the fetal heart rate and its responsiveness. A cardiotocograph is used to monitor the fetal heart rate and presence or absence of uterine contractions. The test is typically termed "reactive" (also "reassuring") or "nonreactive ...
The false positive rate depends on the significance level. The specificity of the test is equal to 1 minus the false positive rate. [7] In statistical hypothesis testing, this fraction is given the Greek letter α, and 1 − α is defined as the specificity of the test. Increasing the specificity of the test lowers the probability of type I ...
She had a molar pregnancy and developed gestational trophoblastic disease, a rare cancer that develops from abnormal pregnancy. Her pregnancy test was positive, but it was a rare cancer that ...
Frequency. ~8% of term pregnancies, [ 2] ~30% of preterm pregnancies [ 4] Prelabor rupture of membranes ( PROM ), previously known as premature rupture of membranes, is breakage of the amniotic sac before the onset of labour. [ 2] Women usually experience a painless gush or a steady leakage of fluid from the vagina. [ 1]
Labyrinthitis. Labyrinthitis is inflammation of the labyrinth, a maze of fluid-filled channels in the inner ear. Vestibular neuritis is inflammation of the vestibular nerve (the nerve in the ear that sends messages related to motion and position to the brain). [ 2][ 3][ 4] Both conditions involve inflammation of the inner ear. [ 5]