Jung Hwan Ahn, M.D.

Spinal cord injury
Ahn, Jung; Berliner, Jeffrey
Medical aspects of disability : a handbook for the rehabilitation professional New York : Springer, c2011,
— id: 5796, year: 2011, vol: , page: ?, stat: Chapter,

Body Systems: An Overview
Ahn, Jung H
Medical aspects of disability : a handbook for the rehabilitation professional New York, NY, US: Springer Publishing Co, 2005,
(from the chapter) The human body consists of a complex combination of histoanatomical and biochemical materials. This chapter provides an overview of body systems. The body is topographically divided for an adept understanding as follows: the skin, the musculoskeletal system, the nervous system, the respiratory system, the cardiovascular system, the hematopoietic system, the digestive system, the genitourinary system, the endocrine system, the visual system, and the auditory and vestibular systems.
— id: 4104, year: 2005, vol: , page: 31, stat: Chapter,

Paraplegia subsequent to administration of tissue plasminogen activator and intravenous heparin following myocardial infarction--a case report [In Process Citation]
DePorto R; Ahn JH; Gianutsos JG
2000 Summer;23(2):150-152, Journal of spinal cord medicine
A case involving spinal epidural hematoma following tissue plasminogen activator and intravenous heparin therapy administered after acute myocardial infarction is reported here. The symptoms of spinal epidural hematoma following thrombolytic therapy are outlined and a recommended course of action for arriving at a definitive diagnosis of suspected epidural hematoma is provided
— id: 11579, year: 2000, vol: 23, page: 150, stat: Journal Article,

Tetraparesis following dental extraction: case report and discussion of preventive measures for cervical spinal hyperextension injury
Whiteson JH; Panaro N; Ahn JH; Firooznia H
1997 Oct;20(4):422-425, Journal of spinal cord medicine
This concerns a patient with compression myelopathy following passive hyperextension of the cervical spine during a dental procedure. Although he had been asymptomatic prior to the procedure, subsequent cervical spinal imaging revealed advanced spondylosis and spinal stenosis. Spinal stenosis is often asymptomatic for a long time. However, when radiculomyelopathy occurs after minor trauma to the head or neck, the patient is often found to have spinal stenosis. Specifically, hyperextension of a cervical spine with spondylotic changes can lead to compression myelopathy. Acquired spinal stenosis correlates positively with aging. As the size of the elderly population continues to increase the prevalence of cervical spondylotic radiculo-myelopathy will likely increase as well. Since appropriate precautions against potential neurologic damage can be undertaken, we suggest radiographic screening for pre-existing spinal stenosis prior to a procedure requiring hyperextension of the neck. Preventive measures for individuals with asymptomatic spondylotic changes and education of all health-care professionals to avoid abrupt or prolonged hyperextension of the cervical spine is emphasized
— id: 12232, year: 1997, vol: 20, page: 422, stat: Journal Article,

MOTOR RECOVERY OF THE UPPER EXTREMITIES IN TRAUMATIC QUADRIPLEGIA - A MULTICENTER STUDY
DITUNNO, JF; STOVER, SL; FREED, MM; AHN, JH
1992 MAY ;73(5):431-436, Archives of physical medicine & rehabilitation
Clinicians need to know recovery of neurologic function in the upper extremities after traumatic quadriplegia to prognosticate function in self-care, to determine the effectiveness of various interventions, and to develop a comprehensive rehabilitation plan. This study was undertaken to determine the extent of recovery of key muscles of the arms in motor complete quadriplegic subjects. The hypothesis stated that patients with some motor power (grades 1.0 to 2.5/5) in muscles in the zone of partial preservation would recover at an earlier time and to a greater extent than those with no motor power (grade 0/5). One hundred fifty subjects, C4, C5, and C6 motor complete, were entered in the study within one week of injury from four centers. Serial muscle examinations of the biceps, wrist extensors, and triceps on the right and left sides were performed up to 24 months after spinal cord injury. The pattern of recovery in the key muscles of the 67 subjects with some motor power in the zone of partial preservation to grade 3/5 was significantly greater than the 83 subjects with no motor power (68% to 82% vs 14% to 36%, p < .001) at three to six months postinjury. The plateau of the median manual muscle test score determined the extent of recovery and reached grade 4/5 in subjects with some motor power at three to six months. The pattern of recovery revealed more subjects with some motor power improved to grade 3/5 at all intervals earlier than those with no motor power (p < .005). Recovery continued in those muscles with no motor power from the nine- to 24-month interval, increasing from 41% to 64% (p < .05). Since most quadriplegic patients are discharged four to five months postinjury, these findings indicate that many patients have not achieved full motor recovery at discharge. It is urged that patients be reevaluated at regular intervals subsequent to discharge to determine if they have reached a functional grade of muscle strength for the purposes of self-care training, reassessment of equipment needs, and eligibility for reconstructive surgery or functional aids, if indicated
— id: 51953, year: 1992, vol: 73, page: 431, stat: Journal Article,

Scrotal fistula from urethro-vasal reflux in paraplegia
Ahn JH; Reiter R; Farcon E; Morales P
1989 Dec;34(6):383-384, Urology
A case is presented of a paraplegic in whom urethro-vasal reflux and scrotal fistula developed. Urodynamics testing showed a hyperreflexic bladder with detrusor-external sphincter dyssynergia
— id: 10414, year: 1989, vol: 34, page: 383, stat: Journal Article,

COMPUTERIZED DOCUMENTATION OF FUNCTIONAL GAIN IN SPINAL-CORD INJURED PATIENTS
Brown, M; Ahn, JH
1987 Sep;68(9):584-584, Archives of physical medicine & rehabilitation
— id: 31125, year: 1987, vol: 68, page: 584, stat: Journal Article,

VENOUS PLETHYSMOGRAPHY VALUES IN PATIENTS WITH SPINAL-CORD INJURY
FRIEDEN, RA; AHN, JH; PINEDA, HD; MINUTOLI, F; WHELAN, E
1987 JUL ;68(7):427-429, Archives of physical medicine & rehabilitation
— id: 41687, year: 1987, vol: 68, page: 427, stat: Journal Article,

FLOOR REACTION ORTHOSIS - CLINICAL-EXPERIENCE
YANG, GFW; CHU, DS; AHN, JH; LEHNEIS, HR; CONCEICAO, RM
1986 ;40(1):33-37 SPR, Orthotics & prosthetics
— id: 41603, year: 1986, vol: 40, page: 33, stat: Journal Article,

DEEP-VEIN THROMBOSIS - REPLY
Ahn, JH
1985 ;66(11):796-796, Archives of physical medicine & rehabilitation
— id: 30824, year: 1985, vol: 66, page: 796, stat: Journal Article,

Deep venous thrombosis: diagnosis in spinal cord injured patients
Chu, D A; Ahn, J H; Ragnarsson, K T; Helt, J; Folcarelli, P; Ramirez, A
1985 Jun;66(6):365-368, Archives of physical medicine & rehabilitation
Because the acute spinal cord injured patient is at high risk for the development of deep venous thrombosis (DVT), accurate diagnosis is critical. Clinical evaluation is unreliable 50% of the time, however, and the two highly accurate diagnostic procedures--venography and 125I-labelled fibrinogen scanning--are invasive and present serious drawbacks. The literature concerning the effectiveness of the two most widely used noninvasive diagnostic alternatives (Doppler ultrasound and venous occlusion plethysmography [VOP]) is equivocal. In our systematic evaluation of a series of 21 patients, using clinical examination, Doppler ultrasound and VOP, all patients who developed DVT were identified by all three methods. Overall accuracy, sensitivity and specificity were 100%
— id: 124439, year: 1985, vol: 66, page: 365, stat: Journal Article,

Sudden quadriplegia after a minor trauma. The role of preexisting spinal stenosis
Firooznia H; Ahn JH; Rafii M; Ragnarsson KT
1985 Feb;23(2):165-168, Surgical neurology
Three patients are described who became quadriplegic after a minor trauma to the spine without suffering a spinal fracture dislocation. Radiologic investigation revealed marked stenosis of the spinal canal, due to developmental stenosis with superimposed degenerative changes in two patients, and calcification of posterior longitudinal ligament of the spine in one. Two patients recovered almost completely with conservative measures. The spinal cord may be able to tolerate slowly increasing mechanical pressure for many years and conform to the shape of the spinal canal without causing any neurological symptoms. However, when stenosis is severe, any additional pressure, for example, swelling and edema from trauma, may cause a neurologic catastrophe
— id: 29071, year: 1985, vol: 23, page: 165, stat: Journal Article,

Serum albumin as a predictor of course and outcome on a rehabilitation service
Glenn, M B; Carfi, J; Belle, S E; Ahn, J H; Gordon, W A; Myer, P A; Miron-Bernstein, S; Ragnarsson, K T
1985 May;66(5):294-297, Archives of physical medicine & rehabilitation
To determine the effect of nutritional status on the medical course and rehabilitation outcome of patients on an adult rehabilitation service, serum albumin (SA) and total lymphocyte count (TLC) were prospectively studied on 36 patients. Readings were taken on admission (T-1), at which time a Barthel Index Mobility Goal (BIMG) was assigned, and again 4 to 8 weeks after admission (T-2). A Barthel Index Mobility Score (BIMS) was assigned at discharge. Rehabilitation program restrictions due to medical complications correlated negatively with both the SA level at T1 (r = -.328, p less than 0.05) and at T2 (r = -.523, p less than 0.01). The SA level at T2 correlated positively with the BIMS:BIMG ratio (r = .416, p less than 0.05) at discharge, suggesting that SA levels may predict patient mobility outcome
— id: 122425, year: 1985, vol: 66, page: 294, stat: Journal Article,

Current trends in stabilizing high thoracic and thoracolumbar spinal fractures
Ahn, J H; Ragnarsson, K T; Gordon, W A; Goldfinger, G; Lewin, H M
1984 Jul;65(7):366-369, Archives of physical medicine & rehabilitation
Studying treatment data for 1,385 patients with traumatic paraplegia registered with the National Spinal Cord Injury Data Research Center during 1973-1979, we investigated: (1) current treatment trends; (2) continuity or change in such trends; (3) trend implications; and (4) whether current practices reflect the controversy in the literature. The data showed little change in the proportion of patients treated surgically, but statistically significant changes in the procedures, especially as related to Harrington rod instrumentation, which increased dramatically both with bony fusion (from none to 24.4%) and in the triple procedure, which adds laminectomy (from 6.1% to 23.2%). These changes have clearly improved health care, as the two predominant surgical treatments were associated with the shortest hospital stays in both the acute and rehabilitation settings
— id: 122424, year: 1984, vol: 65, page: 366, stat: Journal Article,

SPINAL SURGERY FOR FRACTURES OF THE THORACO-LUMBAR SPINE - CURRENT TRENDS
AHN, JH; RAGNARSSON, KT; SELL, GH; LEWIN, HM; GOLDFINGER, GH; GORDON, WA
1981 ;62(10):538-538, Archives of physical medicine & rehabilitation
— id: 40177, year: 1981, vol: 62, page: 538, stat: Journal Article,