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The present investigation aims at exploring the effect of including a pain app called Pain Monitor irruptive oncological pain for chronic pain patients' daily monitoring. Two conditions will be set:
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Irruptive oncological pain (IOP) is defined as an exacerbation of pain in cancer patients whose base pain is stable (e.g., less than 4 on a scale of 0 to 10 for more than 12 hours a day) and is well controlled with opioids. This pain increase can appear both spontaneously and associated to a specific determining factor, be it predictable or unpredictable. The IOP tends to appear quickly (3-5 minutes) and usually have a short duration (average 30 minutes, although pain may last more than 60 minutes) and moderate intensity to elevated . The median episodes of breakthrough pain per day is of 3.
The prevalence of IOP is alarmingly high. A review study of 19 works scientists places the number of cancer patients with IOP in approximately 60%. In addition, the IOP is associated with a significant decrease in the quality of life of the patients. For example, a study conducted in different countries in Europe with 1000 cancer patients revealed that in more than 80% of the participants, the appearance of breakthrough pain completely interrupted their activities. Only 11% of the patients interviewed expressed that the IOP did not interfere in their activities. For the rest of the patients, the most affected areas were sleep and emotional well-being. In addition to these costs in the quality of life of patients with IOP, recent studies have warned of the consequences of this type of pain. Thus, an investigation carried out in the United States evidenced that three quarters of the patients interviewed had experienced important economic losses as a result of the pain, being the average direct costs associated with the IOP of $ 891 per person per month.
Aiming to choose the most appropriate study methodology for this type of pain (often unpredictable and of short duration), the investigators have reviewed the works carried out up to the moment on characteristics and treatment of the IOP. Descriptive studies on IOP tend to use a most retrospective observational methodology, which can lead to biases and inaccuracies. For example, in the most ambitious study carried out so far, 1000 patients with IOP were urged to remember the characteristics of pain episodes, such as the average intensity, the approximate average duration and the average number of events per day.
Regarding the investigations on the effectiveness of the treatment of the IOP, the studies comparing different drugs tend to perform clinical trials, while to study the response to a particular drug, seems more adequate continuous assessment of each patient during an IOP episode. This last methodology with repeated measures seems the most adequate in IOP, since the use of clinical trials with few measures (baseline, post-treatment and follow-up) has the limitation of not allowing daily monitoring of patient's pain episodes.
Although daily assessments seems to be the most suitable design for the monitoring of patients with IOP, the implementation of this type of methodology could be very expensive because requires continuous evaluation. To facilitate this, several studies have already shown that mobile applications (APP) can effectively monitor the evolution of a wide range of pathologies in the context of health. In fact, a controlled clinical study recently made found that the records eco-friendly through mobile APPs were more reliable than registers with pencil and paper.
As for the existing APPs in pain, an exhaustive review of the available APPs revealed that there was little evidence to support the use of these technologies. Specifically, these authors showed that the most APPs did not specify whether their content was validated, APPs did not include psychological components and none had been applied in a clinical study. In the light of these results, the investigators contacted the Labpsitec research team of the University Jaume I, who have developed and validated a pain application called "Pain Monitor".
The APP daily evaluates the variables recommended by the Initiative on Methods, Measurement and Evaluation of Pain (IMMPACT): intensity of the pain, use of rescue analgesics, pain interference in functioning, state of mood, general perception of health and evaluation of treatment effectiveness. In addition, "Pain Monitor" also assesses psychological factors and behavior that influence the experience of pain: catastrophism, acceptance, fear / avoidance and coping. The APP seems especially indicated for IOP monitoring since, following the recommendations of the guide "Comprehensive approach to the patient with irruptive oncological pain", allows patients access at any time to record the characteristics of pain (place, intensity, duration and characteristics of pain) and frequency of use of medication for the spikes of pain. Finally, the APP allows to create alarms so that, undesirable clinical events (e.g., severe or recurrent adverse effect, increased pain basal, no pain reduction after use of rescue medication, low adherence to treatment), are sent by email to the principal investigator of the study.
Thus, the study objective is to test if the introduction of the Pain Monitor APP in the day-to-day work of the pain unit improves pain management of irruptive oncological pain patients. To do this, it is necessary to compare the evolution of patients who follow the usual treatment at the pain unit (without app) with a group of patients who do use the Pain Monitor APP.
The investigators will perform a clinical trial comparing the 2 conditions mentioned above:
Therefore, this is a clinical trial without drugs. This is not an observational study since the physicians of patients in the app + alarms condition will be asked to react to an alarm (i.e., if the patient has nausea for 3 consecutive days) by calling the patient and changing the treatment telematically, if necessary, so that the patient can collect the prescription at his primary care center. If the condition APP results in a better treatment of irruptive oncological pain patients, participants of the waiting list will be offered the possibility to use the app at the end of the study.
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Data sourced from clinicaltrials.gov
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