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Sebastiano Mercadante

Publications and source records attributed to Sebastiano Mercadante.

At least 37 records · Page 2Linked to original sources
PubMed2004

Sleep disorders in advanced cancer patients: prevalence and factors associated.

GOALS OF WORK: Sleep disorders have been invariably reported in cancer population. However, the prevalence of this problem in advanced cancer patients has never been assessed. The aim of this study was to evaluate the frequency of sleep disturbances in terms of quantity and quality, and possible associated factors. PATIENTS AND METHODS: A consecutive sample of patients admitted to a pain relief and palliative care unit were surveyed. Patients with severe cognitive problems or who were too ill were excluded. Epidemiological and clinical data, including the performance status, habits, relevant symptoms, and drug use were recorded. Patients were asked to answer a small questionnaire regarding their sleep, and duration and characteristics (nocturnal and diurnal hours slept, falling asleep, awaking, getting back to sleep, early awaking, restoring sleep, nightmares, feeling depressed or anxious). The level of information about the illness was also assessed. MAIN RESULTS: Among the causes of admission, pain control was the main indication (about 58%). Of 123 patients surveyed, 30% slept less than 5 h. Women significantly slept more hours than men (p=0.042). Anxiety (p=0.045), falling asleep (p=0.003), awaking (p=0.035), early awaking (p=0.001), getting beck to sleep (p=0.021), and nightmares (p=0.034), were significantly associated with less hours slept. This relationship was highly significant for less restoring sleep, fatigue, and drowsiness ( p<0.0005). No differences were found for age (p=0.294), primary tumor (p=0.225), level of information ( p=0.529), Karnofsky status (p=0.539), depression (p= 0.095), confusion (p=0.074), possible causes of awaking (p= 0.881), use of opioids (p= 0.798), use of hypnotics (p= 0.197), other morbidities ( p=0.460), or use of alcohol or coffee (p= 0.141). Patients admitted for pain control and/or those receiving opioids more frequently had drowsiness (p=0.01) Patients with lower Karnofsky scores had more drowsiness and diurnal hours slept (p=0.01). Anxiety created more difficulties in falling asleep, produced a less restoring sleep, and nightmares. Depression was associated with early awaking, nonrestorative sleep, fatigue, and nightmares. Confusion was associated with fatigue and nightmares. CONCLUSION: Sleep problems appear to be a significant issue for advanced cancer patients. Attention to sleep disturbance needs to be incorporated into the routine practice in palliative care evaluation.

Female↗
PubMed2004

Addition of a second opioid may improve opioid response in cancer pain: preliminary data.

Recent experimental data suggest a possible use of an opioid combination to improve analgesia. In cancer patients, a rapid opioid escalation due to either worsening of the pain condition or the development of tolerance is a critical phase, as this condition is associated with a negative prognosis. The aim of this study was to assess the effects of adding a second opioid at low doses in patients with a poor analgesic benefit after dose escalation. Fourteen patients receiving strong opioids who had increased their dosage more than 100% in the last week unsuccessfully were randomly chosen to add a second opioid to the first using an initial equivalent dosage of 20% of the previous therapy. The dose of the second opioid was then changed according to the clinical situation to obtain an acceptable pain control with minimal adverse effects. Pain and symptoms associated with opioid therapy were assessed, and an opioid escalation index (OEI) was calculated at weekly intervals. OEI significantly decreased after adding the second opioid, and this trend was also maintained for the following weeks. Similarly, pain intensity was significantly improved and maintained at acceptable levels for the following weeks. The second opioid did not induce significant opioid-related adverse effects. The opioid combination was able to break opioid escalation in patients with pain syndromes with a poor response to the previous opioid. It allowed for a regaining of analgesia, regardless of the opioid combination used. These preliminary observations should be confirmed in further studies.

Adult↗
PubMed2004

Opioids and renal function.

UNLABELLED: Opioids, both endogenous and exogenous, have a strong influence on the renal function through different mechanisms, producing changes in the renal excretion of water and sodium. Several studies have demonstrated that opioids influence renal function, according to the agonist profile used. Mu, kappa, and delta agonists produce different renal effects, although the mechanisms remain unclear. Experimental data have given the input for a possible therapeutic role of kappa agonists for some specific conditions, for example, in treating water retention or hyponatremia occurring in patients who have hepatic cirrhosis with ascites. On the other hand, changes in renal function might strongly condition the use of opioids in the clinical setting, and the knowledge of the relationship between opioids and renal function is mandatory for a tailored approach to accommodate the individual responses in terms of pain intensity, tolerance, and adverse effects experienced by these groups of patients. The influence of renal function when using different opioids in the clinical setting is reviewed, as well as problems related to transplantation, renal damage induced by opioid addiction, and problems related to the use of opioid antagonists in such conditions. PERSPECTIVE: Endogenous opioids exert physiologic effects on renal function, and the use of opioids may have an influence on renal activity. Renal impairment has a serious impact on the clearance of most opioids used in the clinical setting. Biochemical and clinical monitoring is mandatory to prevent serious complications.

Analgesics, Opioid↗
PubMed2004

Safety and effectiveness of intravenous morphine for episodic (breakthrough) pain using a fixed ratio with the oral daily morphine dose.

Breakthrough pain is normally severe in intensity and has a rapid onset. The availability of supplemental doses of opioids (rescue medication) in addition to the continuous analgesic medication is the main treatment suggested to manage these pain flares. The intravenous (i.v.) route may provide analgesia fast enough, but has never been assessed in clinical studies. The aim of this open-label study was to verify the safety and effectiveness of an i.v. dose equal to one-fifth the calculated equianalgesic total daily dose in advanced cancer patients with episodic pain. A consecutive sample of 48 cancer patients treated with oral morphine, who reported an acceptable basal analgesia and reported episodic pains, were selected for the study. The intravenous dose of morphine was one-fifth of the oral daily dose, converted into an i.v. dose using an equianalgesic ratio of 1/3 (i.v./oral). Written orders were given and intravenous morphine (i.v.-M) was administered by nurses. For each episode, pain intensity and opioid-related symptoms were recorded at the start (T0), after achieving maximum pain relief (T1), and one hour after (T2). In five patients, blood samples were taken at the time intervals described for measuring plasma concentrations of morphine and related glucuronated metabolites. One hundred seventy-one breakthrough pains were recorded during admission. In 162 episodes, a reduction of pain intensity of more than 33% was obtained within a mean of 17.7 minutes, from a mean intensity of 7.9 (on a 0-10 numeric scale) to 3. One hundred thirty-six episodes had more than a 50% pain intensity decrease after the i.v.-M within a mean of 16.6 minutes, from a pain intensity of 7.9 to 2.6. No differences in age, sex, pain mechanism, and time of events were found. There was a trend but no statistically significant differences between the groups receiving different basal doses and time to reach the maximum effect. Twenty episodes in ten patients required an additional dose within 2 hours. Adverse effects were uncommon and were significantly related to the basal dose, and as a consequence, with the i.v.-M dose. Morphine concentration significantly increased at the time of pain intensity reduction, and then decreased. These observations suggest that i.v.-M at a dose equivalent to 20% of the basal oral dosage is safe and effective in the majority of patients experiencing pain exacerbation. This treatment is inexpensive and can be used at little risk to patients.

Analgesics, Opioid↗
PubMed2004

Aggressive pharmacological treatment for reversing malignant bowel obstruction.

Early and intensive pharmacological treatment not only may reduce gastrointestinal symptoms but also reverse malignant bowel obstruction. Fifteen consecutive advanced cancer patients with inoperable bowel obstruction received a combination of drugs including metoclopramide, octreotide, dexamethasone and an initial bolus of amidotrizoato. Recovery of intestinal transit was reported within 1-5 days in fourteen patients, who continued this treatment without presenting symptoms of bowel obstruction until death. This case series establishes that the combination of propulsive and antisecretive agents can act synergistically to allow a fast recovery of bowel transit without inducing unpleasant colic. It suggests that the most important mechanism in these circumstances is functional and can be reversible, if an aggressive treatment is initiated early before fecal impaction and edema render bowel obstruction irreversible.

Abdominal Neoplasms↗
PubMed2004

Optimization of opioid therapy for preventing incident pain associated with bone metastases.

Breakthrough pain is a transitory flare of pain superimposed on an otherwise stable pain pattern in patients treated with opioids. One form of breakthrough pain is incident pain, which is due to movement and is commonly associated with bone metastases. The development of this pain is rapid and no medication, administered "as needed," has such a rapid onset that it parallels this temporal pattern of pain. This study used a construct based on the prevention of this event, and implemented a new experimental paradigm. Specifically, the study determined whether increasing the opioid doses above those sufficient to control pain at rest would reduce the occurrence of these pains. Twenty-five consecutive patients with movement-related episodic pain associated with bone metastases, and no evident fractures, were selected for the study. They received a rapid intravenous titration of the opioid dose to obtain pain relief at rest. Then, opioid doses were increased to challenge the therapeutic window. The dose ceiling was determined by the development of limiting adverse effects, rather than optimal pain control at rest. Opioid dose increases were then stopped, or doses were even reduced, according to patients' satisfaction or development of adverse effects with moderate-severe intensity. Basal pain intensity and pain induced by movement were measured using a numerical scale from 0-10. Opioid-related symptoms were assessed using a scale from 0 to 3 (absent, slight, moderate, severe), and global daily doses of oral morphine and other symptomatic drugs were also recorded at daily intervals, and at time of discharge, when the best balance was presumed to be reached. Basal pain control was achieved after rapid intravenous titration. The day after, pain induced by movement significantly improved using mean doses of oral morphine equivalents of 102 mg. In the following days, the subsequent increase in opioid doses prescribed despite optimal basal pain control allowed an acceptable level of incident pain intensity until patients' discharge. A minority of patients developed adverse effects with an intensity of 2-3 on the scale, requiring symptomatic treatment or decreases in opioid doses. Data from this study suggest that the intensity of incident pain may be reduced by increasing the opioid dose above that effective for controlling pain at rest. This approach is based on experimental bone models showing a hypersensitivity to some innocuous stimuli, such as movement, requiring pre-emptive higher doses of basal opioid medication to reduce the increased pain input.

Aged↗
PubMed2004

Cancer pain management in children.

Unrelieved pain may have a major impact on the care of children with cancer. The type and severity of pain experienced by children with cancer varies from acute, procedure-related pain to progressive chronic pain associated with the progression of the disease or sequelae of treatment. Drugs are the mainstay of treatment. Regular pain assessments combined with appropriate analgesic administration at regular dosing intervals, adjunctive drug therapy for control of adverse effects and associated symptoms, and nonpharmacological interventions are recommended. Although standard dosing of opioids adequately treats most cancer pain in children, more complex treatment is required by a significant group. Strategies to improve analgesia include the use of epidural or intrathecal infusions of a combination of opioids and other adjuvants, or other regional anaesthesia techniques. Procedure- and treatment-related pain is an even greater problem than cancer pain. Recommendations have been published with regard to the monitoring and personnel required when children are sedated which aim to set the standard of care and minimize both physical discomfort or pain and negative psychological responses, by providing analgesia; and to maximize the potential for amnesia; and to control behaviour.

Analgesics, Opioid↗
PubMed2003

Factors involved in gastrointestinal bleeding in advanced cancer patients followed at home.

There is a lack of information on the frequency of symptomatic gastrointestinal bleeding in patients with advanced cancer. This group of patients presents several risk factors for developing gastrointestinal bleeding. The aim of this multicenter longitudinal survey was to assess the frequency of gastrointestinal bleeding and possible factors implicated in advanced cancer patients followed at home. A consecutive sample of 439 patients who referred to home palliative care program entered the study. Age, gender, primary cancer and known metastases, possible associated pathologies, history of peptic disease, use of previous or actual nonsteroidal anti-inflammatory drugs (NSAIDs) and steroids, drugs used to prevent gastric complications, the occurrence of hematemesis or melena, significant anemia requiring blood transfusion, and mortality associated with the hemorrhagic event were recorded. Of 377 patients who completed the study, 18 reported gastrointestinal bleeding, and five had significant anemia requiring blood transfusion in three cases. Death was found to be related to bleeding in three patients. NSAIDs, steroids, and gastroprotectors were frequently used, either before or during home care. However, no clear relationship between age, gender, and the use of offender drugs with gastrointestinal bleeding was found. Liver involvement was frequently associated with the risk of developing gastrointestinal bleeding.

Anti-Inflammatory Agents, Non-Steroidal↗
PubMed2003

Celiac plexus block for pancreatic cancer pain: factors influencing pain, symptoms and quality of life.

Neurolytic celiac plexus block (NCPB) is claimed to be an effective method of pain control for pancreatic cancer pain. However, the factors that may influence long-term analgesia, adverse effects, and quality of life after performing NCPB have never been determined. In a prospective multicenter study, 22 patients who underwent NCPB were followed until death. Numerous parameters other than pain and symptom intensity were evaluated, including age, gender, initial site of cancer, sites of pain, possible peritoneal involvement, technique, and oncologic interventions. Indices were calculated to determine the opioid consumption ratio (EAS) and the trend of opioid escalation (OEI). NCPB was effective in reducing opioid consumption and gastrointestinal adverse effects for at least 4 weeks. In the last four weeks prior to death, there was the typical trend of increasing symptom intensity common to the terminal cancer population. None of the factors studied influenced the analgesic effectiveness of NPCB. NPCB, performed by skilled clinicians, regardless of the technique chosen, is a safe and useful means that should be considered as an adjuvant to common analgesic regimens at any stage, as it may allow the reduction of the visceral component of pancreatic pain that may prevail in certain phases of the illness. The analgesic and symptomatic effect of NCPB is presumably advantageous for about four weeks. A possible factor interfering with long-term outcome includes the capacity of cancer to involve the celiac axis, which can distort the anatomy and prevent neurolytic spread, or modify the pain mechanisms. Outcomes are strongly based on individual variation.

Analgesics, Opioid↗
PubMed2003

Hyperalgesia: an emerging iatrogenic syndrome.

Clinical reports suggest that opioids, intended to abolish pain, can unexpectedly produce hyperalgesia. This paradoxical effect may be mechanistically related to tolerance induced by increasing doses of opioids. Two case reports illustrate a syndrome characterized by increasing pain pursued by escalating opioid doses, which results in a worsening of the clinical picture. Several experimental data may help explain the course of this challenging clinical condition. In escalating opioid doses rapidly, a risk of opioid-induced hyperalgesia should be recognized, as higher doses of opioids may stimulate rather than inhibit the central nervous system by different mechanisms. Alternative procedures should be taken into consideration to break this cycle, should it occur. More data are needed to detect this condition, as currently no diagnostic information on specific markers, clinical or biochemical, exists.

Analgesics, Opioid↗
PubMed2002

A model of acute symptom control unit: Pain Relief and Palliative Care Unit of La Maddalena Cancer Center.

Palliative care in Italy was provided solely on a home care basis until a couple of years ago. In recent years different realities have been created according to personal experience, quite apart from new resources provided by the National Health System. The first Pain Relief and Palliative Care Unit in Sicily, the largest region in Italy, was established in March 1999. Most members of the regular staff of this Unit have a background in anesthesiology. Activity in the Unit has grown progressively, with 460 admissions in the last year. The characteristics of the first 1,000 patients admitted, the principal protocols for diagnostic and therapeutic procedures, such as those for hitherto intractable pain, nutrition and hydration, interventional procedures for symptom control, and emerging problems, a project called "Island with no pain," and activities in the fields of formation and research are described.

Cancer Care Facilities↗