High-altitude hypoxia exposure inhibits erythrophagocytosis by inducing macrophage ferroptosis in the spleen.

High-altitude polycythemia (HAPC) affects individuals living at high altitudes, characterized by increased red blood cells (RBCs) production in response to hypoxic conditions. The exact mechanisms behind HAPC are not fully understood. We utilized a mouse model exposed to hypobaric hypoxia (HH), replicating the environmental conditions experienced at 6000 m above sea level, coupled with in vitro analysis of primary splenic macrophages under 1% O2 to investigate these mechanisms. Our findings indicate that HH significantly boosts erythropoiesis, leading to erythrocytosis and splenic changes, including initial contraction to splenomegaly over 14 days. A notable decrease in red pulp macrophages (RPMs) in the spleen, essential for RBCs processing, was observed, correlating with increased iron release and signs of ferroptosis. Prolonged exposure to hypoxia further exacerbated these effects, mirrored in human peripheral blood mononuclear cells. Single-cell sequencing showed a marked reduction in macrophage populations, affecting the spleen's ability to clear RBCs and contributing to splenomegaly. Our findings suggest splenic ferroptosis contributes to decreased RPMs, affecting erythrophagocytosis and potentially fostering continuous RBCs production in HAPC. These insights could guide the development of targeted therapies for HAPC, emphasizing the importance of splenic macrophages in disease pathology.

[Mutual Support Beyond Suffering and Mortality-Spiritual Care for Families of Terminal Cancer Patients].

With the progression of cancer and the approach of death in terminal cancer patients, the suffering of the family members of patients increases drastically, often leading into a difficult spiritual journey. The needs for spiritual care in this population generally consist of: 1. Empathy: Bearing the psychological stress due to the sharing of physical pain with the patients; 2. Powerlessness: Regretting not having the power to turn the tide; 3. Loneliness: Becoming exhausted due to facing heavy physical workloads alone; 4. Break down: Feeling hopeless in the face of the myriad challenges of care; 5. Despair: Feeling perplexed by the prospects of a desperate future; 6. Sorrow: Feeling bitter due to the realization that the disease is incurable and to being reluctant to acknowledge the parting. The spiritual needs of family members may be met by evaluating the needs for and resistance to spiritual care, followed by the use of religious and non-religious companions and the application of listening and empathy approaches in order to elicit positive thoughts and the values of love, forgiveness, and reconciliation. In strengthening their personal beliefs, family members may find connectedness with god, humanity, and objects; may see hope in life; and may find the meaning of suffering in order to further seek and find inner peace, accomplish themselves, and eventually achieve spiritual sublimation.

Efficacy of guided imagery with theta music for advanced cancer patients with dyspnea: a pilot study.

BACKGROUND: Dyspnea is a frequent and devastating symptom among advanced cancer patients for which improved and low-cost palliative techniques are needed. METHODS: A one-group repeated measures research design investigated the efficacy of guided imagery (GI) with theta music (M) on dyspnea in advanced cancer patients. The intervention consisted of four periods: (a) pretest; (b) intervention with peaceful non-M; (c) intervention with 10 min of GI with M (GI/M), with the first and last 3 min being M only (i.e., the middle 4 min was GI/M); and (d) posttest. Dyspnea outcome was measured with the Modified Borg Scale (MBS) for self-reported evaluation of dyspneic symptoms. Physiological parameters measured were pulse oxygen saturation (SpO(2)), end-tidal CO( 2) (EtCO(2)), heart rate (HR), and respiratory rate (RR). Posttest qualitative data were obtained via interview for subjective patient experience. RESULTS: Participants included 53 patients, 33% with lung cancer. GI/M produced a significant decrease in MBS scores; 90% of the subjects gave positive qualitative reviews of GI/M. SpO(2) did not change significantly over time. GI/M significantly increased EtCO(2), decreased RR, and decreased HR. DISCUSSION: This study demonstrates that GI/M is a useful intervention for palliative care of patients with dyspnea. M alone was demonstrated to be effective, while soothing non-M was not effective. GI/M was more effective than M alone. GI/M should be considered low-cost end-of-life palliative care for dyspnea.

[The application of hospice palliative care on discharge planning for the terminal cancer patient].

Whole person, family-centered, continued care, and multidisciplinary approach were four core values of hospice palliative care applied in this paper to assist in the difficult processes of discharging terminal cancer patients from the hospital and providing continued care until their peaceful death. Reasons underlying difficulties with discharges identified during hospitalizations between July 5th to 25th 2007 include: 1. 'whole person' aspects, including lack of confidence with the discharge on the part of the patient and his / her families due to inadequate symptoms control and loneliness due to lack of caregiver understanding and support; 2. 'family-centered' aspects, including failure to designate a key decision maker, differences of opinions, and overwhelming caregiver burdens; 3. 'continuity of care' aspects, including lack of appropriate and continuing palliative care and 4. 'multidisciplinary approach' aspects, including factitious relationships among patient, family members, and healthcare providers due to lack of trust. Furthermore, the healthcare team mapped out individual and continued care plans as follows: 1. 'whole person' aspects should focus on symptom control, enhancing comfort, and encouraging emotional expression; 2. 'family-centered' care aspects should identify the key person and significant others, decrease caregiver burdens, provide essential assistance and conduct family conferences; 3. 'continuity care' aspects should include consulting hospice home care and bereavement care professionals; 4. 'multidisciplinary approach' aspects should address comprehensive care so that team members learn from and reflect on their experiences. Ultimately, patients were successfully discharged from the hospital and peacefully passed away one week afterward. The writer hopes this nursing experience will provide a valuable reference for clinical practice to develop a family-centered approach to palliative care based on the four core values of hospice palliative care and the multidisciplinary discharge plan for terminal cancer patients.

[A nursing experience of holistic care on total suffering of a patient with terminal illness].

The purpose of this article was to describe a nursing experience using holistic care to relieve total suffering resulting from complex interactions amongst physical, psychological, social and spiritual aspects in a patient with terminal illness. Each aspect of problems was identified by means of direct participant care, observation, empathetic communication and holistic assessment. Such included: (1) physical aspect: distress caused by pain, nausea, vomiting and poor intake, infection and hypercalcaemia; (2) psychosocial aspect: caregiver's overwhelming burdens and financial concerns; (3) spiritual aspect: yearn for being with a higher-being and receiving unconditional love, pursuit of the meaning of suffering, proceed to the next stage to develop a unique care plan and nursing intervention program. Nursing goals were set up based on the patient's "life expectancy" represented by the hope for a painless and peaceful death. The author helped to provide unique, holistic and continued care for the purpose of humanity. The main nursing interventions included active control of symptoms, encouraging the expression of emotional distress, caring and emotional resonance with caregiver's overwhelming burdens, reconciling with a higher being through art therapy, pursuit of the meaning of suffering and sharing the darkness. This nursing experience of holistic care may be shared with other healthcare professionals and has been recorded as a positive response to the following quote from Dame Cicely Saunders: "The way care is given can reach the most hidden places and give space for unexpected development."