Sunday, July 1, 2018

Insomnia in elderly people


Insomnia in elderly people
Dr. Dwijesh Kumar Panda
Introduction:
 Insomnia is a condition of impaired sleep, with difficulties in initiating or maintaining sleep. It is a very common medical complaint in primary care patients. The prevalence of insomnia is over 60 percent.  Insomnia is associated with multiple consequences that have a negative impact on quality of life and the ability to perform normal functions. In addition, insomnia is a strong predictor of the development of psychiatric disorders
Medication side effects – Medications that are being used for other indications may have arousal or stimulant properties that can exacerbate sleep disturbances. These include opioids, steroids, beta-receptor agonists, many antidepressants, and psychostimulants.
 Symptoms of insomnia — People with insomnia often:
●Have trouble falling or staying asleep
●Feel tired or sleepy during the day
●Forget things or have trouble thinking clearly
●Get cranky, anxious, irritable, or depressed
●Have less energy or interest in doing things
●Make mistakes or get into accidents more often than normal
●Worry about their lack of sleep
Measures to improve insomnia 
 ●Sleep only long enough to feel rested and then get out of bed
●Go to bed and get up at the same time every day
●Do not try to force yourself to sleep. If you can't sleep, get out of bed and try again later.
●Have coffee, tea, and other foods that have caffeine only in the morning
●Avoid alcohol in the late afternoon, evening, and bedtime
●Avoid smoking, especially in the evening
●Keep your bedroom dark, cool, quiet, and free of reminders of work or other things that cause you stress
●Solve problems you have before you go to bed
●Exercise several days a week, but not right before bed
●Avoid looking at phones or reading devices ("e-books") that give off light before bed. This can make it harder to fall asleep.
Other things that can improve sleep include:
●Relaxation therapy, in which you focus on relaxing all the muscles in your body 1 by 1
●Working with a counselor or psychologist to deal with the problems that might be causing poor sleep
 Medicines to help sleep — Yes, there are medicines to help with sleep. But you should try them only after you try the techniques described above. You also should not use sleep medicines every night for long periods of time. Otherwise, you can become dependent on them for sleep.
Insomnia is sometimes caused by mental health problems, such as depression or anxiety. If that's the case for you, you might benefit from an antidepressant rather than a sleep aid. Antidepressants often improve sleep and can help with other worries, too.
Addressing the environment — Environmental steps that appear to help reduce insomnia include:
Keeping patient rooms cool, well ventilated, and with low light at night
The use of white noise machines.
Limitations on the use of computers, smartphones, and iPads at night and other stimuli
(Television, loud music)
Lifestyle modifications — a number of lifestyle modifications may promote a more regular sleep pattern and can be instituted in a palliative care setting. These include reducing or avoiding:
Daytime naps
Large meals or excessive fluids at bedtime
Stimulants (caffeine)
Treatment:
Benzodiazepines — while being the most commonly prescribed class of medications for insomnia in the general population, benzodiazepines are associated with adverse effects that should be carefully considered in the palliative care patient
Nonbenzodiazepines — Nonbenzodiazepines are a class of prescription medicines that are somewhat similar to benzodiazepines. These medications may have fewer side effects compared with benzodiazepines because they work more on sleep centers and less on other areas of the brain. They tend to be short acting, so they are also less likely to produce hangover sedation in the morning. Some can also be prescribed for a longer period of time.
Nonbenzodiazepines used to treat insomnia include zaleplon , eszopiclone , zolpidem,  and zolpidem extended release, Zolpidem is also available as a dissolving tablet, an oral liquid spray, and as a dissolving tablet at a lower dose for middle of the night use,
Do not take these medicines with alcohol or other sedating drugs, and do not take more medicine than your doctor recommends.
Melatonin — Melatonin is a neurohormone secreted by the pineal gland that can assist with maintaining sleep-wake cycle. It is a widely available over-the-counter agent that is often used to alleviate insomnia, despite the lack of prospective data
PREGABALIN has shown efficacy for generalized anxiety disorder (GAD) in comparison with placebo in several randomized trials. Pregabalin inhibits calcium currents via high-voltage-activated channels containing the a2d-1 subunit, though the relationship of this mechanism to its efficacy in GAD is not known. It was approved in 2006 for the treatment of anxiety in Europe. Pregabalin is not approved for treating GAD by the US Food and Drug Administration. The doses for pregabalin range from 50 to 300 mg, though many patients may need a total daily dose of greater than 150 mg. Side effects include sedation and dizziness. Tolerance, withdrawal, and dependence are possible, but pregabalin is generally better tolerated than benzodiazepines
Dementia — Patients with dementia are at an increased risk for experiencing insomnia as a potential symptom of their underlying dementia illness or from associated conditions (sun downing, agitation, or other delirium).
Maximizing exposure to natural light in the mornings and light exercise, when feasible, can help entrain more normal circadian rhythms.

SUMMARY AND RECOMMENDATIONS
Insomnia is a condition of impaired sleep, with difficulties in initiating or maintaining sleep, and/or experiencing sleep as nonrestorative and unrefreshing, despite having the appropriate opportunity for sleep to occur. It is estimated that insomnia affects over 70 percent of palliative care patients.
Addressing environmental issues may help address external factors exacerbating insomnia in these patients. This includes keeping patient rooms cool, well ventilated, and with low light at night, the use of white noise machines, and limitations on the use of computers at night and other stimuli ( television, loud music)
A number of lifestyle modifications may promote a more regular sleep pattern and can be instituted in a palliative care setting. These include reducing or avoiding daytime naps, large meals before bedtime, drinking a large amount of fluid in the evening, or stimulants, including caffeine. Daytime light exposure and activity levels should be increased when possible.
Clinicians and staff should minimize disruptions of a patient’s sleep. Regardless of setting, dimming lights in the vicinity of the palliative care patient’s room may provide a simple cue to others to maintain a calm, quiet, sleep-promoting environment.
Medications be prescribed for insomnia only after attempting nonpharmacological-based modifications. There is no single pharmacologic approach that can be recommended for all patients. The approach to the selection of a sleep aid must be individualized, and the lowest effective dose should be administered. As with most drugs, patients in palliative care must be carefully and continually monitored for both positive effect and the development of adverse effects, particularly as the patient’s disease progresses.

REFERENCES



Addiction damages the Brain


Addiction damages the Brain
Dr. Dwijesh Kumar Panda

Addiction hijacks the brain’s neural pathways. It is a moral failing of desire, unrestrained eating and withdrawal that traps tens of millions of people in the world. Addiction denote dependence of a substance with increasing tolerance. If it is used more and more nasty withdrawal effects occur when use stops. These are alcohol, nicotine and heroin. Nicotine is a water soluble poisonous alkaloid found in tobacco leaves which is smoked and chewed. Heroin is a white crystalline powder derivative of morphine having euphoric effect. Marijuana and cocaine don’t cause shakes, nausea and vomiting like withdrawal. Addiction is a disease, not a moral failing. It is characterized by compulsive repetition of an activity despite life damaging consequences. Anything that induces euphoria (feeling of vigor, well-being) or is calming, can be addictive. Addiction depends person’s vulnerability, which is affected by genetics, trauma, and depression. Many people have persistent desire to eat certain foods. Pizza- typically made with white-flour crust and topped with sugar-laden tomato sauce is the most addictive food, with chips and chocolate. That is a major reason why people struggle with obesity.
More than two lac people worldwide die every year from drug overdoses according to the United Nations office on drugs and crime. Much more than this die from smoking and drinking. A billion people smoke tobacco. It is the top five causes of death: heart disease, stroke, respiratory infections, chronic obstructive pulmonary disease and lung cancer. Nearly one of every 20 adults worldwide is addicted to alcohol. Gambling and compulsive activities are also recognized as addictions. In the United States 33,091 cases of opioids overdose deaths happened in 2015. The U.S. surgeon general’s report on addiction concluded that 21 million have a drug or alcohol addiction. 3.3 million worldwide die each year from alcohol. This disorder is more common than cancer. 1.1 billion people in the world smoke tobacco. Behavioral addictions are strong desires for gambling and other attractions of modern life- junk food, shopping, smartphones. These are potentially addictive because of their powerful effects on the brain’s reward system. Gambling and Internet gaming resemble drug addiction.
M.R.I. (Magnetic Resonance Imaging) can unravel the mysteries of addiction. The brain scans are coverted to images that pin point the circuits. The brain images visualize the brain state. There is a spike in the neurotransmitter dopamine. It is a chemical messenger that carries signals across the synapses. Dopamine plays wide-ranging roles in the brain. In addition, the flow of dopamine heightens. Each drug that’s abused affects brain chemistry. They all send dopamine level soaring far beyond the natural range. The brain’s executive control centre is the prefrontal cortex and other cortical regions. Changes in this part of the brain affect judgement, self-control and cognitive (memory) functions. People with addiction often in using drugs to relieve the misery they feel when they stop.


Normal Neuronal Activity
Cocaine addicts have reduced gray matter volume in the prefrontal cortex. The deficiency of the volume results in poor executive function, memory, attention, decision- making. They generally perform worse. Cocaine is a white powder obtained from dried coca leaves which is an American shrub. This drug that is abused affects brain chemistry. They increase dopamine levels far beyond the natural range. The cells that make dopamine are the little devils in our brain. They powerfully enhance the chemical drive desire. Several studies don’t answer the chicken-and-egg question. Does addiction cause these impairments, or do brain vulnerabilities due to genetics, trauma, stress or other factors increase the risk of becoming addicted? Goldstein, director of NIDA discovered disappointing evidence that frontal brain regions begin to heal when people stop using drugs.
Cocaine interfering with dopamine transport
Our brain evolved a dopamine –based reward system to encourage behaviors that help us survive. They are eating, procreating, and interacting socially. Different drugs interact with the reward system in unique ways to keep the synapses artificially flooded with dopamine. That dopamine rush can rewire our brain to want more drugs, leading to addiction. Brain’s reward system controls craving and pleasure. Craving is driven by neurotransmitter dopamine. Pleasure is stimulated by other neurotransmitters in “hidden hot spots.” When the craving circuits overwhelms the pleasure hot spots, addiction occurs. People use more drugs despite the consequences.


Heroin flood the synapses with dopamine
The application of electromagnetic pulses to the prefrontal cortex or transcranial magnetic stimulation is a hope of success. This technique is now being tested around the world. Medications that can prevent the activation and keep people from falling prey to unseen triggers are in the pipe line of modern research.
In the world of addiction, the best hope for treatment lies in melting modern science and depend on ancient meditating practice. Use of meditation and other techniques to bring awareness to habits that drive self –defeating behavior. In Buddhist philosophy, craving (strong desire) is viewed as the root of all suffering. Mindfulness can counter the dopamine flood of contemporary life. It is more effective in preventing drug-addiction. It can ride out the wave of intense desire.  Mindfulness trains people to pay attention to cravings without reacting to them. It breaks the habit of ice cream and chocolate. Yoga, counselling, amino acid supplements, and dieting changes can be more effective in preventing drug addiction. Meditation quiets the Posterior Cingulate Cortex and the neural space that don’t lead to obsession (evil spirit ruling a person). Our brains evolved a dopamine based reward system to encourage behaviors that help us survive, such as eating, procreating and interacting socially. The brain can rebuild itself. That’s the most amazing thing.
References:
1.     Journal of European Neuropsychopharmacology, January 2016.
2.     Diagnostic and statistical Manual of Mental Disorders, 2016.