Delirium (PDQ®): Supportive care - Health Professional Information [NCI] - General Management Approach to Delirium
An integrated approach to management involves educating family members about the nature of the delirium syndrome and its potential treatment.[1,2,3] Family concerns, particularly the misinterpretation of symptoms such as agitation, emotional lability, and disinhibition, must be addressed. Depending on the clinical circumstances, guarded optimism regarding reversibility can be expressed. On the basis of discussion with family members, a consensus is then reached on the goals of care; this, in turn, will determine the desired and appropriate level of assessment and therapeutic intervention, which could be directed at identifying and treating underlying precipitants to reverse or improve delirium. The extent of assessment will likely be influenced by the clinical setting, disease variables, and level of distress. It may therefore be appropriate in some situations to forego further assessment and focus solely on symptomatic treatment.
Regardless of the level of investigational or therapeutic aggression, symptomatic treatment is usually required for most patients. Monitoring and reassessment should be ongoing, particularly when pharmacological sedation is required to initially control symptoms.
The major challenge in treating plasma cell neoplasms is to separate the stable, asymptomatic group of patients who do not require immediate treatment from patients with progressive, symptomatic myeloma who should be treated immediately.[1,2] Monoclonal gammopathy of undetermined significance or smoldering myeloma must be distinguished from progressive myeloma.
Asymptomatic Plasma Cell Neoplasms
Asymptomatic patients with multiple myeloma who have no lytic bone lesions and normal renal function...
Various environmental strategies have been proposed to reduce the symptomatic distress associated with delirium. These strategies include discrete efforts at reorientation such as a well-lit room with familiar objects, a visible clock or calendar, limited staff changes (and possibly one-on-one nursing care), reduced noise stimulation, and the presence of family.[5,6,7] Although some controversy surrounds the use of physical restraints, their judicious use may sometimes be necessary to prevent self-harm or physical aggression directed at caregivers.
Identification of Underlying Causes and Their Treatment
Delirium reversal is consistent with the goals of care; therefore, the standard management approach in patients with cancer is to search for and treat the reversible precipitants of delirium.[1,2] Although patients with cancer generally have a high level of baseline vulnerability to the development of delirium (owing to factors such as cachexia, hypoalbuminemia, advanced age, and prior dementia), the greatest therapeutic benefit is more likely to be derived from identifying and treating superimposed precipitants with relatively low-burden interventions such as discontinuation or dose reduction of psychoactive medications, subcutaneous fluid administration via hypodermoclysis to treat dehydration, intravenous or subcutaneous bisphosphonate treatment of hypercalcemia, and possibly oral or intravenous antibiotics to treat infection.[9,10] This process typically involves a careful history and physical examination in addition to basic laboratory tests and imaging. If no obvious precipitant is identified in preliminary searching, the decision to proceed with more invasive or elaborate tests is mainly determined by the goals of care.
Opioid analgesics, required for most patients with advanced disease, are among the psychoactive agents that precipitate delirium most frequently.[9,11] A prospective cohort study in an oncology inpatient population (n = 114) demonstrated that patients exposed to daily oral opioid doses higher than 90 mg of morphine or morphine equivalents were at significantly higher risk of developing delirium. These results are still significant when controlling for the effects of corticosteroids, benzodiazepines, and other psychotropic medications. However, this study did not provide enough data (on comorbidities, laboratory values, etc.) to determine which patients specifically were at risk for delirium when exposed to more than 90 mg of opioids per day.