Time perception of cancer patients without evidence of disease and advanced cancer patients in a palliative, end-of-life-care setting

Donev I. Time estimation is associated with the levels of distress in patients prior to starting radiotherapy

Purpose or Objective

The aim of this study was to explore the potential relationship between the time estimation and psychological distress in patients with solid tumors prior to starting radiotherapy.

Materials and Methods

In this multicenter study were included a total of 344 patients with solid tumors (197 with and 147 without metastatic disease). The time estimation was assessed by evaluating each subjects prospective estimation of how fast 1 min passed compared to the actual time. The median value (35sec) of subjective perception of time was used to group cases into two categories for experience of time. We used the National Comprehensive Cancer Network Distress Thermometer at the beginning of treatment to determine the levels of distress, where it measures distress on a scale from 0 to 10. Patients scoring 4 or above (73.5 %) were regarded as having high levels of distress.

Results

The time estimation distributions significantly changed according to the level of distress. ROC analysis revealed that at the optimal cut off value of time estimation, patients with low and high distress levels can be discriminated with an AUC = 0.80 (95 % CI: 0.75- 0.85, p < 0.001) and with a sensitivity of 77.8 % and specificity of 73.3 %. In a multivariate logistic regression model, fast time estimation was an independent predictor of high levels of distress (OR 0.136; 95 % CI, 0.072---0.256, p < 0.001).

Conclusion

Time estimation is a novel potent indicator of high levels of distress in cancer patients prior starting of radiotherapy.

Dealing With Temporality in Patients With Life-Limiting Disease: An International Qualitative Study

The prospect of death influences people's thoughts about and how they deal with their remaining time. We aimed to understand whether patients with progressive, life-limiting diseases are oriented in the past, present, or future and how they deal with temporality. We conducted 57 in-depth interviews with end-of-life patients in 10 countries using thematic analysis at three levels (i.e., locally in three countries, with codes shared in the three-country subgroup, and in all 10 countries with a codebook that we developed). We found that the patients' thoughts were oriented toward all three time levels (i.e., past, present, and future). Complementing these levels, we identified another, namely, the future after death. Each time level included patients actively and passively dealing with their thoughts. Past themes were remorse and regret, nostalgia, and coming to terms with past choices; present themes were feeling grateful for being alive, a time for farewells, and living for the day; future themes were worries about the future, to miss out, hope, ideas about death and dying, and planning the near future; and future after death themes were not being there, worries about loved ones, and preparations for a future after death. A changed view on lifetime and avoidance of thinking about a certain time level related to several time levels, while desire to die fluctuated between levels and between acting on and feeling about it. Living for the day, worries about the future, and worries about the well-being of loved ones were common themes in all countries.

Changes in Time Perception and Coping Strategies in Young Adults With Cancer: A Qualitative Study

BACKGROUND

A cancer diagnosis is a traumatic event. Youths, in the most crucial stage in a person's life course, are more susceptible to the influence of cancer. The diagnosis disrupts the original life and time plans of young adults with cancer, resulting in a reconstruction of time perception and changes in coping strategies.

OBJECTIVE

The aim of this study was to explore the changes in time perception and coping strategies in young adults with cancer.

METHODS

A phenomenological research methodology was used in the qualitative study. Thirty-one young adults with cancer were recruited. Semistructured interviews were conducted with them, and the interview data were analyzed using Colaizzi's 7-step analysis method.

RESULTS

The study revealed 3 themes related to changes in time perception: perceived alterations in the speed of time, changes in remaining available time, and shifts in time preferences. Five themes were identified regarding coping strategies for changes in time perception: self-regulation of emotions, establishing spiritual beliefs, planning time effectively, returning to family life, and closure of the inner self.

CONCLUSIONS

Identifying changes in time perception among young adults with cancer through the speed of time, remaining available time, and time preference and guiding patients in adopting positive coping strategies can offer more effective cancer support and care for patients.

IMPLICATIONS FOR PRACTICE

Healthcare professionals should pay attention to the changes in time perception in young adults with cancer and guide them to cope positively.

Past Happiness and Broken Future Horizon of Oncological Patients during Chemotherapy-A Quantitative Exploration of a Phenomenological Hypothesis

Understanding the impact of cancer on the experience of time is crucial in the context of hope and recovery. This study, a follow-up to a previous qualitative study of ovarian cancer patients - explored two types of such experiences-the memory of past happiness and the limited future planning. A sociodemographic questionnaire with nine questions about the experience of time was used on a convenience sample of 202 patients with various cancers, predominantly women with breast, ovarian, and cervical cancer. It was found that the respondents experienced increased focus on the present, decreased focus on the future, and a sense of unpredictability, with a relatively short temporal horizon measured in weeks and months, not years. Almost half of the respondents (46%) measured time during treatment by the rhythm of chemotherapy and check-ups, which thus appeared as the most meaningful events. The increase in the frequency with which patients underwent chemotherapy mildly affected their focus on the present (R = 0.25, p < 0.05), likely because of the discomfort of the side effects. The correlations between age and time in treatment, on the one hand, and the experience of time, on the other, were negligible. Changed temporal experience during chemotherapy is a factor that can have an impact on patients' well-being and ability to cope with the disease. It thus should be taken into account when planning oncology care.

The rhythm of chemotherapy and the felt experience of time: a front-loaded phenomenological retrospective cohort study

It is well-known that chemotherapy brings about various adverse physical effects such as fatigue, nausea, or vomiting, and that it lowers mental well-being. It is less known that it desynchronizes patients with social environment. This study explores the temporal aspects and challenges of chemotherapy. Three groups equal in size and distinguished according to weekly, biweekly, and triweekly treatment schemes, each independently representative in terms of sex and age of the cancer population (total N = 440) were compared. The study found that chemotherapy sessions, regardless of their frequency, patients' age, and the overall length of treatment, have a very large effect on changing the felt pace of time from flying to dragging (Cohen's d = 1.6655). Most patients pay more attention to the passing of time than before treatment (59.3%), which has to do with the disease (77.4%). They also experience the loss of control over time, which they subsequently attempt to regain. The patients' actual activities before and after chemotherapy, however, are mostly the same. All these aspects create a unique 'chemo-rhythm', in which the significance of the type of cancer and demographic variables is negligible, and the mere rhythmic nature of treatment plays a central role. In conclusion, patients find the 'chemo-rhythm' stressful, unpleasant and difficult to control. It is vital to prepare them for it and help to reduce its adverse effects.

Biologia Futura: does the aging process contribute to the relativity of time?

In his Theory of relativity, Einstein determined that the time is relative to the reference frame of the observer. Under specific conditions, there is a difference in the elapsed time between two clocks, known as time dilation. A similar relativistic effect could be attributed to the brain operating at different frequencies, e.g., while it is slow and during the thought process. Time flow and the aging process are causally linked. Herein, we introduce physical relativity into the mind/thought context and elaborate changed perception of the time flow (the impression of the time acceleration) with aging. The phenomenology of time is observed in the context of physical and biological clock, as well as by introducing the category of 'mind time.' Mental processing impairment is crucial for the "aging-caused relativity of time," while adjusting of its' perception seems to be a matter of body/mind rest, mental hygiene and physical activity of the aging subject. We also provide a brief overview of the perception of time flow in some disease states that coincide with aging. Our main idea has a perspective for future development in the interdisciplinary synergy of philosophy, physical-mathematical elaboration, experimental biology and clinical investigations.

Experience of Time and Subjective Age When Facing a Limited Lifetime: The Case of Older Adults with Advanced Cancer

Objectives

We addressed two questions: (1) Does advanced cancer in later life affect a person’s awareness of time and their subjective age? (2) Are awareness of time and subjective age associated with distress, perceived quality of life, and depression?

Methods

We assessed patients suffering terminal cancer (OAC, n = 91) and older adults free of any life-threatening disease (OA, n = 89), all subjects being aged 50 years or older.

Results

Older adults with advanced cancer perceived time more strongly as being a finite resource and felt significantly older than OA controls. Feeling younger was meaningfully related with better quality of life and less distress. In the OA group, feeling younger was also associated to reduced depression. Perceiving time as a finite resource was related to higher quality of life in the OA group.

Discussion

Major indicators of an older person’s awareness of time and subjective aging differ between those being confronted with advanced cancer versus controls.

Past, present and future, the experience of time during examination for malignant brain tumor: a qualitative observational study

BACKGROUND

Primary malignant brain tumor is a severe disease with a poor prognosis causing reduced life expectancy and possible alteration in the perception of time. The aim of this study was to gain deeper insight into the perception of time from the perspective of patients with brain cancer as they pass through the Danish Integrated Brain Cancer Pathway at a university hospital in Denmark.

METHODS

Data were generated by shadowing six patients and relatives during their visit to and hospitalisation in a neurosurgical department.

RESULTS

Through one constructed case, three perspectives of time were identified. The patient's perception of time during his illness, the healthcare system's perception of time and, finally, an ethical time perspective. The analysis showed a discrepancy between patients' and healthcare professionals' perception of time. Furthermore, the results revealed an ethical time dimension.

CONCLUSIONS

The findings contribute to a better understanding of the perception of time among seriously ill patients and may further healthcare professionals' awareness of how to support patients in achieving a more meaningful use of their remaining lifetime.

Fast time perception is associated with high levels of anxiety in cancer patients prior to starting chemotherapy

Our study explored the potential relationship between time perception and the level of anxiety in cancer patients prior to starting chemotherapy. Time perception was assessed in 162 chemonaïve patients with solid tumors by evaluating each subject's prospective estimation of how fast one minute passed compared to the actual amount of time passed. The median value of time perception was used to stratify the patients into two categories of fast and slow time perception. We used the generalized anxiety disorder questionnaire (GAD-7) as a screening tool for detecting levels of anxiety. Scores ≥ 10 were considered high. In total, 45 (27.8%) patients had high levels of anxiety. The pattern of the time perception distributions significantly changed according to the reported levels on the GAD-7 scale. Scores ≥ 10 correlated with fast time perception and the female gender. Patients with a fast time perception had significantly higher levels of anxiety (8.44 ± 5.1) than patients with a slow time perception (3.49 ± 4.3). ROC analysis revealed that at the optimal cut-off value of time perception, clinically significant levels of anxiety can be discriminated with an AUC = 0.78 (95% CI: 0.70-0.85, p < 0.001), a sensitivity of 82.2% and a specificity of 64.1%. Moreover, in a multivariate logistic regression model, fast time perception was an independent predictor of clinically significant levels of anxiety (OR: 8.24; 95% CI: 3.16-21.41, p < 0.001). Time perception is a novel potent indicator for high levels of anxiety in cancer patients.

Formalin-induced and neuropathic pain altered time estimation in a temporal bisection task in rats

Time perception is an important ability that is related closely to humans’ and animals’ daily activities. It can be distorted by various emotional states. In human studies, experimental pain has been shown to prolong the perception of time. However, related animal studies are lacking. In this study, we used a temporal bisection task to investigate how acute inflammatory pain (induced by hind-paw formalin injection) and chronic neuropathic pain [induced by spinal nerve ligation (SNL)] affected time perception in rats. Rats were trained to recognize “short” (1200-ms) and “long” (2400-ms) anchor-duration pure tones and were rewarded for corresponding lever presses. During testing, rats perceived a series of intermediate-duration and anchor-duration pure tones, and selected levers corresponding to the “short” and “long” tones. After formalin injection, rats gave more “long” lever-press responses than after saline injection. The point of subjective equality after formalin injection also increased, suggesting that formalin-induced acute pain extended time perception. In contrast, rats that had undergone SNL gave fewer “long” lever-press responses compared with the sham surgery group. This animal study suggests that formalin-induced pain and neuropathic pain may have different effects on time perception.

Living at the end-of-life: experience of time of patients with cancer

Background

The aim of this study was to gain insight into the experience of time of terminal patients with cancer. Experience of time is relevant in palliative care in both policy and practice. On a policy level, the Quality Adjusted Life Year (QALY), the most used outcome measure for cost-effectiveness analysis in healthcare, assumes time to be a linear and additive variable, which is one of the reasons that its applicability in palliative care is questioned. On a practice level, a better understanding of the experience of time of patients with limited time left, could help to recognize if and how these patients can have a more meaningful use of time. The main focus of this study was to discover whether time perception of these patients in their last months of life had changed as compared to earlier periods of time in their lives in good physical health. The pace of time and time dominance (comparison of past, present and future) were investigated.

Methods

In several hospices and palliative care units in the Netherlands, twelve semi-structured interviews were conducted with terminal patients with cancer.

Results

Time perception at the end of life had changed for most participants. They all lived on a day-to-day basis in the terminal phase, independent of their way of life in the healthy phase. Furthermore, the experienced duration of a day turned out to be very different between patients, but also between days, depending on daily activities. Besides, for most patients for whom the future was the dominant period of time in the healthy phase, the dominant period of time in the terminal phase had become the past.

Conclusions

Time perception of terminal patients with cancer differed from the time perception in their relatively healthy phase of life. This suggests that the LY part of the QALY is not comparable for all phases of life.

Electronic supplementary material

The online version of this article (10.1186/s12904-019-0424-7) contains supplementary material, which is available to authorized users.

Dispositional orientation to the present and future and its role in pro-environmental behavior and sustainability

With our attitudes and behavior, which aim at promoting sustainable behavior, we face a temporal dilemma – a temporal conflict between short-term and long-term interests. Accordingly, psychological time is an essential variable in understanding how people decide between options of short-term self-interest, which can be experienced at present, and long-term common interest, such as sustainable development with an outcome that lies far in the future. Present feelings are often so powerful that considerations of future events are neglected. Individuals differ in their emphasis on present and future dimensions. A stronger future orientation and a mindful present orientation are positive predictors of sustainable behavior; hedonistic and impulsive present orientations are negative predictors. We discuss the concept of the balanced time perspective as the propensity to consciously switch among the time orientations of past, present, and future. Fitting with their overall psychological profile, individuals with a balanced time perspective might display a range of sustainable attitudes and behaviors.

One-minute time interval estimation as a novel ultrashort tool for distress screening

PURPOSE

Our study explores the potential relationship between time estimation and level of distress in cancer patients prior to starting chemotherapy.

METHODS

Time estimation was assessed in 262 chemonaïve patients with solid tumors by evaluating each subject's prospective estimation of how fast 1 min passed compared to the actual time. The median value (40 s) of time estimation was used to stratify the patients into two categories of fast and slow time estimation. The National Comprehensive Cancer Network Distress Thermometer was used at the beginning of treatment to evaluate levels of distress. Patients scoring 4 or above (51.9%) were regarded as having high levels of distress.

RESULTS

The pattern of the time estimation distributions significantly changed according to the level of distress. Patients with a fast time estimation had significantly higher levels of distress (4.55 ± 3.1) than patients with a slow time estimation (3.3 ± 2.9) (p = 0.001). ROC analysis revealed that at the optimal cutoff value of time estimation, patients with low and high distress levels can be discriminated with an AUC = 0.60 (95% CI: 0.53-0.67, p = 0.005) and with a sensitivity of 62.5% and specificity of 53.2%. Moreover, in a multivariate logistic regression model, fast time estimation was an independent predictor of high levels of distress.

CONCLUSION

Time estimation is a novel potent indicator of high levels of distress in cancer patients. This test is an easily performed, time-saving, and nonintrusive ultrashort screening tool that is even suitable for patients who are not willing to reveal their level of distress via direct questionnaires.

Bad Healthy State Compress Temporal Extension Both in Past and Future Orientations

We examined how different health states and cancer-related depression influence time perception in temporal extension (TE) regarding the past and the future over individuals' entire lives. We used the magnitude estimation method to investigate TE (past and future) and long duration (20 years), and directly measured patients with cancer and their subjective feelings about their lives. In Experiment 1, we investigated whether there were differences in perceptions of TE between patients with cancer (n = 144) compared to a healthy control group (n = 208). Results indicated that the patients with cancer group evaluated longer TE in healthy states (imagination condition) than in unhealthy states (objectivity condition), and the healthy control group evaluated longer TE in healthy states (objectivity condition) than in unhealthy states (imagination condition). Moreover, the patients with cancer group evaluated longer past-oriented TE than future-oriented TE, whereas the healthy control group evaluated longer future-oriented TE than past-oriented TE. Experiment 2 was conducted to further examine the unexplained findings of Experiment 1. Results indicated that because of the impact of depression on the cancer group, their embodied time system slowed down, and explicit behavior indicated an over-evaluation of time, resulting in group differences. In conclusion, TE could be affected by different health states. Moreover, healthy and unhealthy states may be more associated with future and past orientation, respectively. Lastly, individuals' time perception can be influenced by depression.

Do Future Limitation Perspective in Cancer Patients Predict Fear of Cancer Recurrence, Mental Distress, and the Ventromedial Prefrontal Cortex Activity?

Life-threatening diseases (e.g., cancer) affect people's future time perspective (FTP) and affect their mental health. When one's lifetime is perceived as running out, the individual possesses a future limitation perspective (FLP), which is one of factors in FTP. In this study, we explored the structural relationship between FLP, fear of cancer recurrence (FCR), mental health status (MHS), and brain activity in patients with cancer. Cancer patients were divided into two groups using the FTP scale and Feelings About Life Scale: a strong FLP group (S-FLP) and a weak FLP group (W-FLP). For these groups, we measured cancer patients' MHS using the Symptom Checklist (SCL-90) and FCR using the Cancer Acceptance Scale; brain activity was measured using resting-state functional magnetic resonance imaging (rs-fMRI). Behavioral results showed that the S-FLP group had higher mental symptoms and FCR scores than did the W-FLP group. Neuroimaging results revealed that spontaneous brain activity in the ventromedial prefrontal cortex (vmPFC) was stronger in the W-FLP group than in the S-FLP group. Moreover, brain activity in the vmPFC negatively correlated with FLP, FCR, and SCL-90 scores only in the S-FLP group, and the model constructed further indicated that FCR and SCL-90 scores fully mediated the relationship between FLP and vmPFC activities. These findings suggested that a strong FLP might lead to mental disorders and greater FCR, which might change the spontaneous activity of the vmPFC in cancer patients.

How to Increase the Quality of a Suffering Experience: Lessons Derived From the Diary Narratives of a Dying Adolescent Girl

Personal narratives are assumed to be primary sources of the essential meaning of lived experiences of dying. In this study, I analyzed the personal diary of Miraç Fidan, a terminally ill adolescent with advanced cancer who kept a diary until her death at the age of 15. Miraç’s Diary, also published as a book, was subjected to hermeneutic phenomenological narrative analysis. Inferences were drawn regarding the following basic elements: (a) The dynamics in which Miraç lived and (2) her perceptions of herself, her immediate environment, and her experiences. Suffering seems to be the main experience dominating Miraç’s life, which I examined with regard to two dimensions: suffering caused by inevitable factors and suffering caused by preventable/changeable factors. The results suggest that if various causes among contextual factors are neutralized, then the quality of the existential experience determined by the inevitable factors would increase.

A pilot study to assess feasibility of value based pricing in Cyprus through pharmacoeconomic modelling and assessment of its operational framework: sorafenib for second line renal cell cancer

Background

The continuing increase of pharmaceutical expenditure calls for new approaches to pricing and reimbursement of pharmaceuticals. Value based pricing of pharmaceuticals is emerging as a useful tool and possess theoretical attributes to help health system cope with rising pharmaceutical expenditure.

Aim

To assess the feasibility of introducing a value-based pricing scheme of pharmaceuticals in Cyprus and explore the integrative framework.

Methods

A probabilistic Markov chain Monte Carlo model was created to simulate progression of advanced renal cell cancer for comparison of sorafenib to standard best supportive care. Literature review was performed and efficacy data were transferred from a published landmark trial, while official pricelists and clinical guidelines from Cyprus Ministry of Health were utilised for cost calculation. Based on proposed willingness to pay threshold the maximum price of sorafenib for the indication of second line renal cell cancer was assessed.

Results

Sorafenib value based price was found to be significantly lower compared to its current reference price.

Conclusion

Feasibility of Value Based Pricing is documented and pharmacoeconomic modelling can lead to robust results. Integration of value and affordability in the price are its main advantages which have to be weighed against lack of documentation for several theoretical parameters that influence outcome. Smaller countries such as Cyprus may experience adversities in establishing and sustaining essential structures for this scheme.

Rural nursing and quality end-of-life care: palliative care ... palliative approach ... or somewhere in-between?

Secondary analysis of data from 2 studies examining palliative care in rural areas was conducted with the aim to better understand how a nursing palliative approach influences quality outcomes at end-of-life. Nurses' ways of being that brought connection and comfort at end-of-life included paying attention to time, privacy, and family support. The rural context with its geography, relationships, and unique resources influenced nurses' abilities to enact a palliative approach. Findings demonstrate that urban-centric models of palliative care do not fit well in rural nursing practice and highlight the importance of understanding the rural context.