Hand function and motor cortical output poststroke: are they related?

OBJECTIVES: To characterize hand function and cortical excitability in chronic and subacute stages of stroke recovery and to describe the relations between these measures. DESIGN: Observational, case-control, and cohort pre-post inpatient rehabilitation. SETTING: Motor performance laboratory. PARTICIPANTS: Fourteen community-living chronic and 14 subacute inpatient stroke survivors volunteered. Fourteen similarly aged healthy subjects served as a control group. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Finger tapping, peg placing, and strength were measured as indicators of hand function. The amplitude and latency of motor-evoked potentials (MEPs) and the duration of the silent period in the first dorsal interosseous muscle elicited by transcranial magnetic stimulation (TMS) reflected the integrity of excitatory and inhibitory cortical circuits. RESULTS: Diminished hand function, small MEPs, and prolonged silent-period durations were evident in stroke compared with control subjects. Longer MEP latencies and smaller amplitudes distinguished subacute from chronic stroke. Side-to-side asymmetries were greatest in the subacute group for all TMS outcomes, although this lessened over time based on the subsample retested at discharge. Greater side-to-side MEP amplitude symmetry and lower motor threshold (lesioned side) were associated with better hand function in subacute and chronic stroke, respectively. CONCLUSIONS: Cortical excitability is an important determinant of hand function poststroke and evolves with the time elapsed since the stroke event. The unique neural correlates of hand function evident in subacute and chronic stroke may reflect different phases of neuromuscular recovery.     

Hand‐held Dynamometer Positioning Impacts Discomfort During Quadriceps Strength Testing: A Validity and Reliability Study

Purpose/Background

A belt‐stabilized hand‐held dynamometer (HHD) offers the ability to quantify quadriceps muscle strength in a clinical environment, but a limitation is participant discomfort at the interface between the HHD and the tibia. The purpose of this study was to quantify the level of discomfort associated with a modified belt‐stabilized HHD configuration compared to a standard belt‐stabilized configuration and an isokinetic dynamometer. The secondary purpose of this study was to determine the validity and reliability of a modified configuration used to measure quadriceps strength compared to the “gold‐standard” isokinetic dynamometer.

Methods

Twenty healthy participants (5 males, 15 females; age=24.7±2.2 years, height=171.1±8.8 cm, mass=72.0±18.7 kg) performed maximal knee extension isometric contractions during each of three testing conditions: isokinetic dynamometer, standard configuration with HHD placement on the tibia, and an alternative configuration with the HHD interfaced with the leg of a table. Discomfort was quantified using a Visual Analog Scale (VAS). Differences in discomfort and torque (N•m) associated with the testing positions were determined using Friedman test or repeated measures analysis of variance. Validity was quantified using Pearson correlations and within‐session intrarater reliability was determined using an intraclass correlation coefficient (ICC2,1) and associated confidence intervals (95% CI).

Results

The isokinetic dynamometer configuration resulted in the least discomfort (p< .01) and the modified configuration was more comfortable than the standard configuration (p= .003). There was a significant correlation between measures from the isokinetic dynamometer and the standard configuration (r=.87) and modified configuration (r=.93). Within‐session intrarater reliability was good for both the standard configuration (ICC_2,1=0.93) and modified configuration (ICC_2,1=0.93) conditions.

Conclusions

The use of the modified belt‐stabilized HHD configuration, where the HHD was interfaced with the leg of a table, offers a more comfortable alternative compared to the standard belt‐stabilized configuration to obtain isometric quadriceps strength measures in a clinical environment. This configuration is also a valid and reliable alternative to the “gold standard” isokinetic dynamometer when testing isometric quadriceps strength at 90° of knee flexion.

Level of Evidence

Diagnostic, Level 3     

Hand hygiene – a review for veterinary nurses

ABSTRACT:

Hand hygiene is an important part of peri-operative veterinary practice; the aim of surgical hand disinfection is the elimination of transient – and the reduction of resident – micro-organisms. If completed correctly, it reduces the transmission of micro-organisms, thus decreasing cross-contamination and surgical site infections (SSI) in patients. With the widened concern and incidences of methicillin-resistant Staphylococcus aureus (MRSA) infections in recent years, this has never been more important. Between 10 per cent and 20per cent of companion animals are found to carry MRSA each year, and these numbers are thought to be increasing.¹ MAYNE, T. (2010) ‘MRSA – myth or reality?’, Veterinary Nursing Journal, 25(9): 18–21.[Crossref] , [Google Scholar] MRSA will never be eradicated, so all veterinary personnel must follow best practice to minimise the spread of infection.     

Neuere Hypothesen zur Evolution der Aufrichtung, des Fu?es und der Hand des Menschen

Background

Darwin was the founder of the origin of species theory and Wolf was the first manual therapist to look into the phylogenesis of the cervical spine. This publication aims to present the most recent hypotheses regarding the erect posture of the human (by Niemitz 2004) and the development of the foot (by Schad 1999) and hand. By means of a table we report on the archaeological findings of hominids over the last 30?years who walked upright 6?billion years ago (Millennium man). In addition, we report how certain manual and complementary therapeutic procedures can be deduced from the evolution of the human species.

Conclusion

Since the evolution of human bipedalism and the foot preceded evolution of the hand, manual diagnostics and therapy should also begin at the foot, thus proceeding from caudal to cranial. Givenhuma erect posture in water, complementary therapy and wellness should also take place near water, since it offers a high potential for well-being, as explained by evolution. Ancient patterns appear to prevail.     

, and an all-d

m based on 16-bits singlechip computer is presented. In the system, the capacity of driving load can be improved by employing robust current control technique and current prediction technique is adopted to shorten the dead time of current control, which     

Effect of Foot and Hand Massage In Post–Cesarean Section Pain Control: A Randomized Control Trial

One of the problems for mothers in the post–cesarean section period is pain, which disturbs the early relationship between mothers and newborns; timely pain management prevents the side effects of pain, facilitates the recovery of patient, reduces the costs of treatment by minimizing or eliminating the mother's distress, and increases mother-infant interactions. The aim of this study was to determine the effect of hand and foot massage on post–cesarean section pain. This study is a randomized and controlled trial which was performed in Mustafa Khomeini Hospital, Elam, Iran, April 1 to July 30, 2011; it was carried out on 80 pregnant women who had an elective cesarean section and met inclusion criteria for study. The visual analog scale was used to determine the pain intensity before, immediately, and 90 minutes after conducting 5 minutes of foot and hand massage. Vital signs were measured and recorded. The pain intensity was found to be reduced after intervention compared with the intensity before the intervention (p < .001). Also, there was a significant difference between groups in terms of the pain intensity and requests for analgesic (p < .001). According to these findings, the foot and hand massage can be considered as a complementary method to reduce the pain of cesarean section effectively and to decrease the amount of medications and their side effects.     

Stellenwert der Neuromodulation bei Funktionsstörungen der Hand

Manuelle Medizin - Funktionsstörungen der Hand umfassen Bewegungsstörungen und Schmerzen. Die Ursache kann lokal in der Hand, im Arm, im Thoraxbereich, in der Halswirbelsäule, im...     

Proximal junctional kyphosis and failure—diagnosis,prevention, and treatment

Technical advancements have enabled the spinal deformity surgeon to correct severe spinal mal-alignment. However, proximal adjacent segment pathology (ASP) remains a significant issue. Examples include proximal junctional kyphosis (PJK) and proximal junctional failure (PJF). Agreement on the definition, classification, and pathophysiology of PJK and PJF remains incomplete, and an understanding of the risk factors, means of prevention, and treatment of this problem remains to be elucidated. In general, PJK is a relatively asymptomatic radiographic diagnosis managed with patient reassurance and monitoring. On the other hand, PJF is characterized by mechanical instability, pain, and more severe kyphosis, with potential for neurologic compromise. Patients who develop PJF more often require revision surgery than those with PJK. This chapter will review the current understanding of PJK and PJF.     

Shared decision making and physical therapy: What,when, how,and why?

BackgroundShared decision making is a means of translating evidence into practice and facilitating patient-centred care by helping patients to become more active in the decision-making process. Shared decision making is a collaborative process that involves patients and clinicians making health-related decisions after discussing the available options; the benefits and harms of each option; and considering the patient's values, preferences, and personal circumstances.MethodsThis paper describes what shared decision making is, why it is important, when it is appropriate, and key elements. We report on physical therapists’ current use of and attitudes to shared decision making and explore factors that influence its uptake. Lastly, we examine what is needed to promote greater use of this approach.ResultsKey elements in the shared decision making process are: identifying the problem that requires a decision; providing an explanation of the health problem, including, where appropriate, the natural history of the condition; discussing the available options and the potential benefits and harms of each option; eliciting the patient's values, preferences, and expectations; and assisting the patient to weigh up the options to reach an informed decision. When applied in practice, shared decision making has been found to improve patient-clinician communication; improve patients’ accuracy of their expectations of intervention benefits and harms, involvement in decision-making, and feeling of being informed; and increase both patients’ and clinicians’ satisfaction with care.ConclusionDespite physical therapists’ enthusiasm for shared decision making, uptake of this approach has been slow. Multi-level strategies and behaviour change are required to encourage and support the sustainable incorporation of shared decision making in practice.     

Revisiting antithrombin in health and disease,congenital deficiencies and genetic variants,and laboratory studies on α and β forms

Antithrombin [AT] is the main inhibitor for activated plasma coagulation serine esterases, inhibiting thrombin, Factors Xa and IXa, but also Factors XIIa, XIa, VIIa, kallicrein, and plasmin. Its activity is highly enhanced by heparin, through binding to the pentasaccharide sequences, for inhibition of all coagulation proteases, except thrombin, which inhibition requires its additional binding to the heparin polysaccharide chain. However, AT is the major inhibitor of thrombin in the blood circulation. Congenital or acquired deficiencies of AT expose affected patients to an increased risk of developing unprovoked and recurrent thrombo-embolic diseases. Antithrombin can be measured with various laboratory techniques, by either immunological or functional methods. Earlier, a radial immunodiffusion immunoassay allowed measurement of the protein antigenic content. Functional assays are mainly designed with Anti-Thrombin or Anti-Factor Xa chromogenic methods and are useful for detecting genetic molecular mutations with decreased inhibitory activity and contributed to study the conformational changes of antithrombin and its variants, which potentially regulate the activity of this serine protease inhibitor. These assays are not equivalent in terms of diagnosing protein abnormalities, associated with increased thrombotic incidence, and they have variable performance for reflecting impaired antithrombin binding capacity for heparin, reduced progressive inhibition of serine proteases, or accelerated switch rates to the latent and less active forms. A small proportion of AT (<10%) is present in blood in the β-form, with a lower oligosaccharide content, a lower Molecular Weight, a higher binding rate to endothelial glycosaminoglycans, and a higher anticoagulant activity, hence requiring specific laboratory methods for its measurement. The β-AT form is then of critical importance for controlling blood activation by tissue injury and preventing development of thrombo-embolic diseases. This article reviews the performance characteristics of the currently available assays, and their usefulness for monitoring the use of AT concentrates in intensive care units, disseminated intravascular coagulation or severe infections, to restore the anticoagulant protective effect of heparin by supplementing the requested AT concentration. The issues of automation, harmonization and standardization are also revisited and discussed.