Australian inpatient cancer rehabilitation as seen by patients receiving care pre and post intervention: Insights into unmet needs in the cancer and rehabilitation journey.

OBJECTIVE: The objective of this study is to explore both the negative and positive lived experiences of cancer survivors during specialist inpatient rehabilitation programmes. METHODS: This phenomenological study explored the negative and positive perspectives of cancer survivors with residual disability, during their inpatient rehabilitation. Semi-structured interviews conducted with 22 inpatients on admission and discharge were analysed using the protocols of Interpretative Phenomenological Analysis. RESULTS: Experiences of inpatient cancer rehabilitation were not independent of the whole cancer trajectory. Rather, for these inpatients, processing and ruminating upon challenges to self from the moment of cancer diagnosis and throughout treatments indicated that more emotional and psychosocial support may be useful throughout cancer rehabilitation and the whole cancer trajectory. CONCLUSION: Understanding the concurrent sources of psychological distress and growth in these cancer survivors as they recover from life changing events provides a unique consumer evaluation of an inpatient cancer rehabilitation service and the overall cancer experience. This study has implications for developing insight into the impact that the cancer trajectory has on the individual and reinforces the importance of a holistic approach to rehabilitation that includes a supported mind, body and spirit appreciation of healing.

Australian inpatient cancer rehabilitation, as seen by patients receiving care, pre- and post-intervention.

OBJECTIVE: Rehabilitation is increasingly recognised as effective in addressing impairment and functional disability after cancer treatment. Few studies have investigated the lived positive and negative experiences of cancer patients receiving rehabilitation. METHOD: Semi-structured in-depth interviews were conducted with 22 inpatient volunteers, at their admission and discharge from a subacute hospital rehabilitation unit. We heard narratives of their experiences and their individual goals in our programmes, seeking to make positive and negative subjective interpretations of these. We undertook Interpretative Phenomenological Analysis (IPA) of interviews. RESULTS: Patients described an immense array of personal challenges, including coping with and adapting to functional losses, whilst assimilating the reality that life might not continue as before. They were often living and rehabilitating after the residual effects of cancer treatments, whilst facing new challenges that threatened their quality of life. Although rehabilitation usually improved patients' functional abilities, many still increasingly needed to depend on others in daily life. CONCLUSION: Understanding the narrative of these experiences provides a unique consumer evaluation of an inpatient cancer rehabilitation service. Individuals described a healing environment, where they received multiple therapies and set goals to improve daily living function, as they continued along their personal cancer trajectories.

Multidisciplinary healthcare providers' experience of working in an inpatient cancer rehabilitation unit in Sydney, Australia.

OBJECTIVE: Scant research explores health professionals' experiences of providing inpatient cancer rehabilitation services, either from the negative or positive perspectives. METHOD: This report explores the lived experiences of 14 multidisciplinary health professionals providing cancer rehabilitation services within an inpatient setting. Their interpretations provide a distinctive evaluation of an inpatient, cancer rehabilitation service, both negative and positive, and the impacts of their experiences on them and their patients. Data from semi-structured focus groups and interviews were analysed using Interpretative Phenomenological Analysis (IPA: Psychology and Health, 11, 1996, 261-271) to produce thematic results. RESULTS: Health professionals' focus groups and interviews produced one superordinate theme: Therapeutic community. Subordinate themes were Healing and Hope, Limited by the System, Moral Integrity and Growth, with further subthemes; Invalidation, Moral dilemmas, Gratitude and Humility. Positive views of the specialist service were tempered with issues associated with finite resources and staff feeling unsupported in their person-centred approach. Although rehabilitation was the primary focus of the unit, metastatic cancer may behave unpredictably; symptom recurrences meant that a dialogue of accepting palliative care and dying as a phase of life was also an important factor raised by some patients and families in our setting. Referral to palliative specialists for this dialogue was incorporated in the context of the rehabilitation care provided. CONCLUSION: Study participants provided a unique window, encompassing both negative and positive perspectives, to understanding their deep commitment to quality of care, despite resource limitations. Professionals in this inpatient team worked to provide optimal multidisciplinary services relevant to each individual's need to move towards strength and independence.

Lateral superior olive function in congenital deafness.

The development of cochlear implants for the treatment of patients with profound hearing loss has advanced considerably in the last few decades, particularly in the field of speech comprehension. However, attempts to provide not only sound decoding but also spatial hearing are limited by our understanding of circuit adaptations in the absence of auditory input. Here we investigate the lateral superior olive (LSO), a nucleus involved in interaural level difference (ILD) processing in the auditory brainstem using a mouse model of congenital deafness (the dn/dn mouse). An electrophysiological investigation of principal neurons of the LSO from the dn/dn mouse reveals a higher than normal proportion of single spiking (SS) neurons, and an increase in the hyperpolarisation-activated I(h) current. However, inhibitory glycinergic input to the LSO appears to develop normally both pre and postsynaptically in dn/dn mice despite the absence of auditory nerve activity. In combination with previous electrophysiological findings from the dn/dn mouse, we also compile a simple Hodgkin and Huxley circuit model in order to investigate possible computational deficits in ILD processing resulting from congenital hearing loss. We find that the predominance of SS neurons in the dn/dn LSO may compensate for upstream modifications and help to maintain a functioning ILD circuit in the dn/dn mouse. This could have clinical repercussions on the development of stimulation paradigms for spatial hearing with cochlear implants.

Sound stimulation modulates high-threshold K(+) currents in mouse auditory brainstem neurons.

The auditory system provides a valuable experimental model to investigate the role of sensory activity in regulating neuronal membrane properties. In this study, we have investigated the role of activity directly by measuring changes in medial nucleus of the trapezoid body (MNTB) neurons in normal hearing mice subjected to 1-h sound stimulation. Broadband (4-12 kHz) chirps were used to activate MNTB neurons tonotopically restricted to the lateral MNTB, as confirmed by c-Fos-immunoreactivity. Following 1-h sound stimulation a substantial increase in Kv3.1b-immunoreactivity was measured in the lateral region of the MNTB, which lasted for 2 h before returning to control levels. Electrophysiological patch-clamp recordings in brainstem slices revealed an increase in high-threshold potassium currents in the lateral MNTB of sound-stimulated mice. Current-clamp and dynamic-clamp experiments showed that MNTB cells from the sound-stimulated mice were able to maintain briefer action potentials during high-frequency firing than cells from control mice. These results provide evidence that acoustically driven auditory activity can selectively regulate high-threshold potassium currents in the MNTB of normal hearing mice, likely due to an increased membrane expression of Kv3.1b channels.

A novel role for MNTB neuron dendrites in regulating action potential amplitude and cell excitability during repetitive firing.

Principal cells of the medial nucleus of the trapezoid body (MNTB) are simple round neurons that receive a large excitatory synapse (the calyx of Held) and many small inhibitory synapses on the soma. Strangely, these neurons also possess one or two short tufted dendrites, whose function is unknown. Here we assess the role of these MNTB cell dendrites using patch-clamp recordings, imaging and immunohistochemistry techniques. Using outside-out patches and immunohistochemistry, we demonstrate the presence of dendritic Na+ channels. Current-clamp recordings show that tetrodotoxin applied onto dendrites impairs action potential (AP) firing. Using Na+ imaging, we show that the dendrite may serve to maintain AP amplitudes during high-frequency firing, as Na+ clearance indendritic compartments is faster than axonal compartments. Prolonged high-frequency firing can diminish Na+ gradients in the axon while the dendritic gradient remains closer to resting conditions; therefore, the dendrite can provide additional inward current during prolonged firing. Using electron microscopy, we demonstrate that there are small excitatory synaptic boutons on dendrites. Multi-compartment MNTB cell simulations show that, with an active dendrite, dendritic excitatory postsynaptic currents (EPSCs) elicit delayed APs compared with calyceal EPSCs. Together with high- and low-threshold voltage-gated K+ currents, we suggest that the function of the MNTB dendrite is to improve high-fidelity firing, and our modelling results indicate that an active dendrite could contribute to a 'dual' firing mode for MNTB cells (an instantaneous response to calyceal inputs and a delayed response to non-calyceal dendritic excitatory postsynaptic potentials).