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Mechanically mediated pacemaker pseudomalfunction.

Massumi, R A; Beeson, C R; Udhoji, V N; Bersohn, M M; Usselman, L B.

Pacing Clin Electrophysiol ; 9(3): 316-21, 1986 May.

Article in English | MEDLINE | ID: mdl-2423973

ABSTRACT

A case is described of pacemaker pseudomalfunction caused by intermittent displacement of the ventricular lead. The displacement was shown to be caused by critically timed atrial contractions, dislodging the looped ventricular lead, and resulting in intermittent failure to stimulate the heart.

Subject(s)

Heart Block/therapy , Myocardial Contraction , Pacemaker, Artificial , Aged , Electrocardiography , Equipment Failure , Heart Atria , Heart Block/physiopathology , Humans , Male

System for controlling ambulation pressure (SCAP-3) in patients with disabilities of the lower extremity.

King, P S; Gerhardt, J J; Pfeiffer, E A; Usselman, L B; Fowlks, E W.

Am J Phys Med ; 51(1): 9-15, 1972 Feb.

Article in English | MEDLINE | ID: mdl-5025268

Subject(s)

Biomechanical Phenomena , Locomotion , Orthopedic Equipment , Physical and Rehabilitation Medicine/instrumentation , Artificial Limbs , Humans , Transducers

A versatile amplitude analyzer for EEG signals to provide feedback stimuli to the subject.

Pfeiffer, A E; Usselman, L B.

Med Biol Eng ; 8(2): 209-11, 1970 Mar.

Article in English | MEDLINE | ID: mdl-5484862

Subject(s)

Electroencephalography/instrumentation , Electronics/instrumentation , Automation , Feedback , Humans

ABSTRACT

Subject(s)

Subject(s)

Subject(s)

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