The Phenomenology of Acute Anosognosia for Hemiplegia

Predicting Falls in Rehabilitation: A Comparison of Three Instruments Including Hester Davis

PURPOSE

The aim of this study was to evaluate the ability of the Hester Davis Scale (HDS), Section GG, and facility fall risk assessment scores to predict patients who fall during inpatient rehabilitation.

DESIGN

This study is an observational quality improvement project.

METHODS

Nurses administered the HDS in parallel to the facility's current fall risk assessment and Section GG of the Centers for Medicare & Medicaid Services Inpatient Rehabilitation Facility Patient Assessment Instrument. Receiver operating characteristic curves were compared in 1,645 patients. Relationships of individual scale items to falls were also assessed.

RESULTS

The HDS (area under the curve [AUC] = .680, 95% CI [.626, .734]), facility fall risk assessment (AUC = .688, 95% CI [.637, .740]), and Section GG scores (AUC = .687, 95% CI [.638, .735]) adequately identified patients who fell. AUCs did not significantly differ between assessments. HDS scores of ≥13, facility scores of ≥14, and Section GG scores of ≤51 resulted in the highest sensitivity/specificity balance.

CONCLUSIONS

HDS, facility fall risk assessment, and Section GG scores adequately and similarly identified patients of mixed diagnoses at risk of falling in inpatient rehabilitation.

CLINICAL RELEVANCE TO THE PRACTICE OF REHABILITATION NURSING

Rehabilitation nurses have several options including the HDS and Section GG to identify patients at greatest risk of falling.

Anosognosia for Hemiplegia and Falls After Stroke: A Prospective Correlational Study

PURPOSE

The aim of this study was to explore the association between the presence and severity of anosognosia for hemiplegia (AHP) and falls in stroke survivors.

DESIGN

A prospective, correlational research design was utilized.

METHODS

Primary instrumentation included demographic information and the Visual-Analogue Test for Anosognosia for motor impairment (VATA-m). Correlational and regression analyses were performed between a priori variables.

RESULTS

There was no statistically significant relationship found between AHP and falls. An incidental finding included that clinicians erroneously charted that their patients were aware of their physical limitations 100% of the time, which indicates that there is discord between clinicians and patients regarding physical limitations.

CONCLUSIONS

Though no statistically significant relationship was found between AHP and falls, the incidental finding of dissonance between the patient and the clinician has important clinical implications.

RELEVANCE

The relationship between AHP and stroke rehabilitation outcomes is still not understood, and incorporating part of the VATA-m into patient assessment could improve clinician understanding of patient awareness.

Allochiria for spatial landmarks as the presenting feature of posterior cortical atrophy

Allochiria refers to the mislocation of stimuli to the corresponding position on the opposite side of the body or hemispace. It is most often, although not exclusively, reported in the tactile modality and typically in association with unilateral neglect. We describe a patient presenting with a 2-year history of topographical disorientation without other cognitive complaints. We conducted a systematic exploration of his topographical problems to identify their cognitive substrate. Standard neuropsychological examination revealed no abnormalities. Notably, he performed well on perceptual, spatial, and constructional tasks. No signs of neglect were elicited. A tailored battery of tests was administered, involving road maps and landmarks, and designed to replicate the situations in which he experienced symptoms. The experimental tests showed no evidence of topographical agnosia or amnesia for landmarks and their spatial relationships and no hemispatial neglect. Nevertheless, the patient exhibited a systematic tendency to translocate topographical landmarks sited on the left to the right side. The phenomenon, consistent with representational allochiria, occurred exclusively for topographical landmarks, and was present along both personally familiar and new learned routes. Over the next two years more widespread visuoperceptual and spatial deficits emerged, with Balint and Gerstmann syndromes. Functional imaging revealed hypoperfusion of the occipito-parietal regions and amyloid PET the presence of amyloid plaques. A diagnosis was made of posterior cortical atrophy, the visual variant of Alzheimer's Disease. To our knowledge this is the first case of topographical disorientation presenting with selective representational allochiria and the first report of allochiria as an early sign of posterior cortical atrophy. The case sheds light on the cognitive basis of allochiria and on a puzzling clinical presentation of neurodegenerative brain disease.