care of unconscious patient definition

ABCDE = airway, breathing, circulation, disability, exposure; CT = computed tomography; CXR = chest X-ray. The patient who is in a deep coma with flaccid eye muscles will show no response to stimulation. The RF is a network of neurones within the brain stem (Waugh & Grant 2001) that connect with the spinal cord, cerebellum, thalamus and hypothalamus. poor concentration or short-term memory problems, may only become apparent when a patient returns home. secretions or foreign bodies) and using airway adjuncts to maintain airway patency before assessing the rate, depth, rhythm and characteristics of breathing. To speech = scores 3. A loss of conjugate eye movement away from the direction the head is moved, with the eyes remaining in a midorbit position, suggests brain stem dysfunction. A score of 15 indicates that the patient is alert, orientated and able to obey commands; a score of 8 or less is generally considered to indicate that the patient is in a coma. Pressure is gradually increased for a maximum of 15 seconds. Unconscious patients are commonly seen by physicians. Activation of the muscle stimulates proprioceptors to transmit sensory impulses upward to re-excite the RAS. The RAS is a physiological component of the RF and the neurones which radiate via the thalamus and hypothalamus to the cerebral cortex and ocular motor nuclei. Unconscious patients are nursed in a variety of clinical settings and therefore it is necessary for all nurses to assess, plan and implement the nursing care of this vulnerable patient group. The approach is based on the belief that after a history and a general physical and neurologic examination, the informed physician can, with reasonable confidence, place the patient into one of four major groups of illnesses that cause coma. The British Medical Association (1996) recommends ‘that the diagnosis of irreversible Permanent Vegetative State (PVS) should not be considered or confirmed (and therefore treatment not be withdrawn) until the patient has been insentient for 12 months’. The feedback mechanism, showing two feedback cycles passing through the RAS. Figure 28.2 illustrates a number of activating pathways passing from the mesencephalon upwards. D. Abnormal flexion. Two main parts have been identified (Guyton & Hall 2000): the mesencephalon and the thalamus. The presence of generalised tremor or myoclonus points towards a metabolic cause. For example, a patient who has aphasia caused by a stroke may appear awake and alert; however, their inability to understand or to use language may decrease their full awareness of self and their environment. The unconscious patient is completely dependent on the nurse to manage all their activities of daily living and to monitor their vital functions. Score = 3. Score = 4. To pain = scores 2. There is no international definition of levels of consciousness but, for assessment purposes, differing states of consciousness can be considered on a continuum between full consciousness and deep coma (Hickey 2003) (see Box 28.1). None. Acute states, for example drug or alcohol intoxication, are potentially reversible whereas chronic states tend to be irreversible as they are caused by invasive or destructive brain lesions. In response to a painful stimulus, the patient bends their elbow with adduction of the upper arms and abnormal posturing of the wrist and fingers, otherwise known as decorticate posturing. Early communication with the next of kin, family or appropriate advocate is always necessary. The term stupor describes a state whereby the patient is quiet and tends not to move, except in response to vigorous and repeated noxious stimuli (Hickey 2003). Permanently unconscious state means an irreversible condition in which I am permanently unaware of myself and surroundings.. Before your Living Will goes into effect, you either must be: (1) Terminally ill (see definition as described in the Living Will Declaration Form) and unable to tell your physician your wishes regarding health-care services;OR(2) Permanently unconscious. mixed and dilated pupil(s) – 3rd (oculomotor) nerve lesion from uncal herniation. Hypotension is initially manged with intravenous fluid resuscitation; early vasopressor support is considered when the blood pressure does not respond. The thalamus plays a crucial role in maintaining arousal. This behaviour reflects generalised brain dysfunction due to interference with the RAS, affecting the arousal mechanism (Siddiqi et al 2007). This is termed a ‘positive feedback response’. Common problems with the airway of patient with a seriously reduced level of consciousness involve blockage of the pharynx by the tongue, a foreign body, or vomit. A ‘coma alarm’, an alarm-triggered management routine designed for patients presenting with coma, has been shown to optimise assessment and treatment.6 Checklists for healthcare professionals have also shown utility in the management of coma.20 Intuitively, simulation-based education is an ideal way to train a multidisciplinary team to work collaboratively and effectively. Asymmetrical responses are significant, indicating that a focal neurological deficit is present, but overall brain function is more accurately reflected by the level of best response on the better side (see Limb movement, below). This response is only recorded when sufficient painful stimulus has been applied to provoke a response and no detectable movement has been observed. Unconsciousness is reported when an individual cannot respond to some stimuli and seems to be asleep, either for a short or long time. It is important to remember that the patient is cognitively aware, even if they appear to be mentally and physically inert. In 1974, Teasdale and Jennett developed the Glasgow Coma Scale (GCS), a process used throughout the UK and worldwide as part of the neurological assessment and ongoing observation of the patient (see Figure 28.4). Deep coma, the opposite of consciousness, is diagnosed when the patient is unrousable and unresponsive to external stimuli; there are varied states of altered consciousness in between the two extremes (, Anatomical and physiological basis for consciousness. After a prolonged period of wakefulness, the synapses in the feedback loops become increasingly fatigued, reducing the level of stimulation and activity directed to the reticular activating system and thereby inducing a state of lethargy, drowsiness and eventually sleep (Guyton & Hall 2000). As you get closer to the surface you start to see more things and be more cognizant of what's out there, until you break through to total awareness. To provide a procedural mechanism whereby ethically and medically appropriate health care decisions can be made for patients who lack health care decision-making capacity and for whom no surrogate exists. The patient is able to produce phrases or sentences but the conversation is rambling and inappropriate to the questions being asked. The importance of maintaining such an equilibrium is beyond dispute, but die difficulty of understanding what … The deeper you go, the darker the surroundings. The thalamus and ascending reticular activating system can be damaged either by direct insult or by problems arising within the brainstem.3,4. When the prognosis is poor these discussions will include ceiling of care, consideration of future withdrawal of treatment and cardiopulmonary resuscitation. Minor disturbance such as irritability can easily go undetected and comments from a relative such as ‘she does not seem to recognise me today’ may denote a subtle change in behaviour that requires further investigation. Examination of the skin may reveal drug injection sites. 9), known as ‘Cushing’s response’, is a very late sign of raised intracranial pressure (ICP) and there may have been other signs such as subtle alterations in behaviour or fluctuating level of consciousness which could have indicated a deterioration in neurological status. The response is recorded as ‘localising to pain’ if the patient moves their arm across the midline, to the level of the chin, in an attempt to locate the source of the pain (Figure 28.6b). Hence, appropriate health care decisions include both the provision of appropriate medic… Early diagnosis and treatment with medication, and environmental changes such as reducing noise or sensory input may help to alleviate some of the symptoms. C. Flexing to pain. Systematic team approach to the unconscious patient. The patient is unable to produce any verbal response despite prolonged and repeated stimulation. Electroencephalography (EEG) should be performed in suspected cases of non-convulsive status epilepticus. Whatever model is used, it must consider the patient as he or she intersects in this complex system. Eye movements cannot be fully assessed in an unconscious patient. Congenital deficits of the eye or previous enucleation (see Ch. poor concentration or short-term memory problems, may only become apparent when a patient returns home. Coma is defined as having a GCS <8 or scoring U on the AVPU (Alert, responsive to Voice, responsive to Pain, Unresponsive) scale.7 A focused neurological examination should be undertaken. The nurse needs to be aware if the patient has any hearing deficits because if their eyes are closed, this will affect the initial response. Figure 28.4 The neurological observation chart. Reinforcing biases What exactly qualifies as unconscious bias? The unconscious patient presents a special challenge to the nurse. The primary care team plays a major role in supporting patients following acquired brain injury, facilitating referral to specialist agencies (see www.bann.org.uk). Prognosis depends on a number of factors. This initiates a cycle that causes continued intense excitation of both regions. care of unconsciousness patient Loss of Consciousness is apparent in patient who is not oriented, does not follow commands, or needs persistent stimuli to achieve a state of alertness. Inappropriate words = scores 3. Patients may be unable to understand the nurse’s questions or commands because they do not understand the language or may have a hearing deficit. If any doubt exists, the cervical spine should be immobilised. Orientated = scores 5. A second feedback cycle that stimulates proprioceptors in skeletal muscles is also shown in Figure 28.2. When health care providers and their colleagues are confronted with the reality of racial and ethnic bias, their level of discomfort multiplies, and the willingness to believe and accept that these biases actually exist diminishes. Although the patient has sleep/waking cycles, the higher centres of the brain are destroyed. For further information about the use of the neurological observation chart and GCS in practice, see Woodward (1997a-d), NICE (2003), Waterhouse (2005) and Palmer & Knight (2006). Oxygen therapy should be commenced early and the patient’s oxygen saturation levels monitored to reduce the risk of hypoxia. As the condition develops, speech and communication becomes difficult and behaviour becomes increasingly inappropriate until control of basic and vital processes is completely disorganised. When applying a painful stimulus, it is important to explain to the patient and their relatives what you are about to do and why you are doing it, otherwise they may feel that unnecessary trauma is being inflicted. unconscious patient, as illustrated in the following case. Variations in the motor response may occur during the assessment. These can cause emotional distress for both the patient and family, particularly if they go unheeded and help is not provided. Impaired states of consciousness can be categorised as acute or chronic. Activation of the muscle stimulates proprioceptors to transmit sensory impulses upward to re-excite the RAS. Require special mouth care is essential for some patients suffering from specific illnesses mentioned below: Patients with high fever or hyper-pyrexia. However, the patient is able to control vertical eye movements and blinking and may be able to use these movements to develop a simple communication system. 5. Signals from different areas in the thalamus initiate selective activity in the cortex protecting the higher centres from sensory overload (Marieb 2004). Although unconscious patients most commonly present to the Emergency Department, the competencies to care for these patients are required by acute and general physicians.1,2 Unless the cause of unconsciousness is immediately obvious and reversible, both early senior physician and critical care input are required, especially when the prognosis is poor and decisions regarding ceiling of care or cardiopulmonary resuscitation are needed. 2. Hospital pharmacists can obtain a drug history from primary-care shared records. In most cases, this condition is brought forward by complications arising from alcohol or drug abuse, injuries, or major illnesses. Figure 28.2 The feedback mechanism, showing two feedback cycles passing through the RAS. Although flumazenil can be considered in benzodiazepine overdose, it is contraindicated in patients with a history of seizures and can provoke seizures with concomitant tricyclic overdose. Providing the patient has not sustained a cervical fracture, the ‘trapezius pinch’ (Figure 28.7b) is a useful alternative; the trapezius muscle (the large triangular muscle of the neck and thorax) is squeezed between the nurse’s fingers and thumb. In one systematic review the mortality rate varied from 25–87%.14 Non-traumatic unconscious patients presenting with a stroke have the highest mortality, while those presenting with epilepsy and poisoning have the best prognosis.14,16,17 A Swedish study of coma patients presenting to the Emergency Department found initial inpatient mortality to be 27%, rising to 39% at 1 year.18 Patients with a lower GCS at presentation, 3–5, have a significantly higher mortality than those with a GCS of 7–10.19. Elevating the head end of the bed to degree prevents aspiration. The damaged cortex is unable to interpret the incoming sensory impulses and therefore cannot transmit them to other areas for appropriate action. Ataxic breathing (Biot's respiration) – groups of quick, shallow inspirations followed by regular or irregular periods of apnoea, suggesting a lesion in the lower pons.11, Central neurogenic hyperventilation – breathing characterised by deep and rapid breaths at a rate of at least 25 breaths per minute indicating a lesion in the pons or midbrain.12. deafness or paralysis) or if the patient is receiving muscle relaxants. A second feedback cycle that stimulates proprioceptors in skeletal muscles is also shown in. Although dementia is an irreversible condition, new drug therapies such as donepezil (Aricept®) are being used successfully to delay onset of the disease. Normal conscious behaviour is dependent upon the functioning of the higher cerebral hemispheres and an intact reticular activating system (see below). The mesencephalic area is composed of grey matter and lies in the upper pons and midbrain of the brain stem. The response usually includes spastic hand and wrist movements, with an inward rotation of the shoulders and forearms. It is concerned with the arousal of the brain in sleep and wakefulness (Marieb 2004). Consciousness cannot be measured directly but can be estimated by observing behaviour in response to stimuli. For the care to be effective, a nurse should perform frequent, systematic and objective assessment on the comatose client. Unconscious bias can also affect healthcare professionals in many ways, including patient-clinician interactions, hiring and promotion, and their own interprofessional interactions. The patient offers monosyllabic words, usually in response to physical stimulation. Following painful stimulation, the patient responds by rigid extension, i.e. Hearing can often be the last sense to be lost and the first one to come back before they are able to respond. The need to assess conscious level may arise at any time, in any ward, in any hospital. suctioning, nasogastric tube or urinary catheter. E. Extending to pain. A. Supraorbital ridge pressure. The breath may exhibit the musty smell of hepatic encephalopathy or the garlic smell of organophosphate poisoning.9,10 When the breath suggests alcohol consumption, a thorough search for other causes of unconsciousness should continue. © Royal College of Physicians 2018. nurse play and important role in the care of unconscious (comtosed) patient to prevent p otential complications respiratory eg;distress, pneumonia,a spiration,p ressure ulcer.this achived by: 1. When an individual is in a deep sleep, the RAS is in a dormant state. Patients will present with a range of symptoms including: Delirium is very distressing for the patient and their relatives who may witness their altered behaviour. Common causes of altered level of consciousness are illustrated in Figure 28.3 (see www.headway.org.uk). Clipping is a handy way to collect important slides you want to go back to later. Copyright © 2020 by the Royal College of Physicians, DOI: https://doi.org/10.7861/clinmedicine.18-1-88, Sign In to Email Alerts with your Email Address, A systematic approach to the unconscious patient, Joint Royal Colleges of Physicians Training Board, Specialty training curriculum for Acute Internal Medicine, Specialty training curriculum for General Internal Medicine, Coma of unknown origin in the emergency department: implementation of an in-house management routine. If the painful stimulus does not elicit any response from the patient this indicates a deep depression of the arousal system and the patient is recorded as having no eye opening. The chronic states of impaired consciousness tend to be irreversible as they are caused by invasive or destructive brain lesions. Deterioration or improvement will depend on a number of factors such as the mechanism, extent and site of injury, age, previous medical history and length of coma. Clinically, patients appear to stare into space with nystagmus-like eye movements, lip smacking or myoclonic jerks.13. It is important to remember that the patient is cognitively aware, even if they appear to be mentally and physically inert. 9). A system of upper brainstem and thalamic neurons, the reticular activating system and its broad connections to the cerebral hemispheres maintain wakefulness. Stimulation produces a diffuse flow of nerve impulses which pass upwards through the thalamus and hypothalamus, radiating out across the cerebral cortex to provoke a general increase in cerebral activity and wakefulness (see Figure 28.1). Unconscious patients usually breathe through the mouth, causing secretions to dry. … The cerebrum regulates incoming information by a positive feedback mechanism (Guyton & Hall 2000). Cognitive disabilities, e.g. A. Obeys commands (‘lift up your arms’). If the patient still fails to open their eyes, a painful stimulus must be used. Following the application of a central painful stimulus, either the trapezius squeeze or supraorbital ridge pressure, the patient responds by flexing their arm normally by bending their elbow and weakly withdrawing their hand; no attempt to localise towards the source of the pain is made. Bias, at a conscious or unconscious level, is a topic that is uncomfortable for many within health care, and it is often minimized, avoided, or in some instances rejected. Early physiological stability and diagnosis are necessary to optimise outcome. The nurse must be able to assess and observe the patient accurately so that appropriate intervention can be instituted if the level of consciousness deteriorates. the RAS may first stimulate the cerebral cortex, and the cortical areas responding to reason and emotion may ‘modify’ the RAS, either positively or negatively, according to the ‘decision’ of the cerebral cortex. Comparison of consciousness level assessment in the poisoned patient using the alert/verbal/painful/unresponsive scale and the Glasgow Coma Scale. Kussmaul respiration – deep, laboured breathing, indicative of severe metabolic acidosis and commonly associated with diabetic ketoacidosis. The verbal response may also be compromised by the presence of an endotracheal or tracheostomy tube. A. Supraorbital ridge pressure. Being fully awake, alert, and oriented t… Death will occur soonest when the airway and breathing are compromised; therefore, intubation should be considered in patients with a GCS of 8 or less, or those who cannot protect their own airway or have ineffective respiratory drive and poor oxygenation. Review the contributory causes of altered consciousness shown in Figure 28.3 and consider the underlying mechanism for each of them. Appropriate measures to resuscitate, stabilise and support an unconscious patient must be performed rapidly. The nurse observes and describes three aspects of the patient’s behaviour: Each of these is independently assessed and recorded on a chart (Figure 28.4). Pressure is applied to the lateral inner aspect of the second or third finger using a pen or pencil, for a maximum of 15 seconds (Figure 28.5). Figure 28.3 Common causes of unconsciousness. In this condition there is prolonged seizure activity but in the absence of motor signs. This is indicated on the patient’s chart as ‘T’. This assesses the patient’s best motor response. It's like being underwater. Appropriate measures to resuscitate, stabilise and support an unconscious patient must be performed rapidly. None =scores 1 . E. Extending to pain. The unconscious patient is challenging, in terms of immediate care, diagnosis, specific treatment and predicting prognosis. Mental functions progressively decline with global deterioration of memory, thought processes, motor performance, emotional responsiveness and social behaviour. The best response for each of the three aspects is recorded as a numerical score. However, if the eyelids are drawn back, the eyes may remain open. The nurse plays a pivotal role working with the multidisciplinary team to plan, implement and evaluate specific treatment regimens, whilst providing emotional support and reassurance to the patient and their relatives. C. Flexing to pain. Acute states, for example drug or alcohol intoxication, are potentially reversible whereas chronic states tend to be irreversible as they are caused by invasive or destructive brain lesions. Applying a central painful stimulus. Unless the cause of coma is immediately obvious and reversible, input from senior physicians and critical care colleagues is necessary. Patients with normal pressure hydrocephalus may be helped by insertion of a ventricular shunt (Wilson & Islam 2004, Vegetative state (VS) is a term used to describe a condition that may occur following a severe brain injury, where there is extensive damage to the cerebral cortex. All rights reserved. Emergency neurological life support: approach to the patient with coma, Organophosphate toxicity and occupational exposure, Prognostic and diagnostic value of EEG signal coupling measures in coma, The etiology and outcome of non-traumatic coma in critical care: a systematic review, The new neurometabolic cascade of concussion, Metabolic vs structural coma in the ED – An observational study, Causes of coma and their evolution in the medical intensive care unit, Prognosis of patients presenting with nontraumatic coma, Nontraumatic coma. However, older people often have evidence of minor injuries, such as bruises, which should alert the attending physician to more serious intracranial pathology. Sleep is induced by a hormone called melatonin which is synthesised from serotonin in the pineal gland. Incontinence, perspiration, poor nutrition, obesity and old age also contribute to the formation of pressure ulcers. In older people, especially those taking anticoagulant medication, an intracranial bleed remains a strong possibility, even in the absence of a history of falls or external injury. This initiates a cycle that causes continued intense excitation of both regions. For further information about PVS and locked-in syndrome, see Randall (1997), Smith (1997) and Royal College of Physicians (2003). Lesions in this area can cause excessive sleepiness or even coma (Fitzgerald 1996). Prolonged loss of consciousness (coma, defined as a Glasgow Coma Score of 8 or less) is seen commonly: (1) following head injury, (2) after an overdose of sedating drugs, and (3) in the situation of ‘nontraumatic coma’, where there are many possible diagnoses, but the most common are postanoxic, postischaemic, systemic infection, and metabolic derangement, e.g. However, almost any type of sensory signal can immediately activate the RAS and waken the individual, for example when daylight is detected by the retina of the eye, impulses are sent to the suprachiasmatic nucleus of the hypothalamus, activating sympathetic nerve fibres that will inhibit the secretion of melatonin in the pineal gland. the specialised auditory and visual tracts (see Ch. The patient will moan or groan in response to painful stimulation. If appropriate, written instructions and replies can be used to assess the patient’s language ability. Abnormal flexion. No system is Vegetative state (VS) is a term used to describe a condition that may occur following a severe brain injury, where there is extensive damage to the cerebral cortex. Even during normal sleep, an individual can be roused by external stimuli, in comparison to the person in a coma. The patient’s verbal response may be impaired as a result of a speech deficit such as dysphasia. This article discusses the nursing management of patients who are unconscious and … B. Localising to pain. Bystanders may have witnessed the patient collapse, while paramedics are skilled in surveying the scene for clues, such as empty drug packets, alcohol or a suicide note. The RAS is also affected by signals from the cerebral cortex, i.e. Deterioration or improvement will depend on a number of factors such as the mechanism, extent and site of injury, age, previous medical history and length of coma. In 1974, Teasdale and Jennett developed the Glasgow Coma Scale (GCS), a process used throughout the UK and worldwide as part of the neurological assessment and ongoing observation of the patient (see Figure 28.4). When an individual is in a deep sleep, the RAS is in a dormant state. It may be necessary to increase the level of the verbal stimulation to gain a reaction. Unconsciousness Patent Position During the course of the day, the patient may display a localising response to other sources of irritation, e.g. Spontaneously = scores 4. A. Obeys commands (‘lift up your arms’). Introduction To Patient Centered Care PPT. Decisions made without clear knowledge of the patient’s specific treatment preferences must be made in the patient’s best interest, considering the patient’s personal history, values and beliefs to the extent known. If there is no concern regarding a neck injury, the doll's eyes or oculocephalic reflex can be performed. The content of consciousness refers to the sum of cognitive and affective mental functions. ‘Coma cocktails’ should be avoided.3 In cases where there is clinical suspicion of toxicity, specific antidotes should be used, eg naloxone in opiate toxicity. Impaired consciousness can be considered in terms of reduced alertness/ability to be aroused, awareness or both, with coma defined as ‘a completely unaware patient unresponsive to external stimuli with only eye opening to pain with no eye tracking or fixation, and limb withdrawal to a noxious stimulus at best (often with reflex motor movements)’.3 When describing consciousness imprecise terms such as ‘drowsy’ or ‘mildly unconscious’ should be avoided in favour of a clear description of the patient's actual condition and functional abilities.3, There are two main mechanisms to explain coma. For further information about the use of the neurological observation chart and GCS in practice, see Woodward (1997a-, Nursing patients with musculoskeletal disorders, Nursing patients with respiratory disorders, Nursing patients with disorders of the breast and reproductive systems, Alexanders Nursing Practice Hospital and Home. Impaired, reduced or absent consciousness implies the presence of brain dysfunction and demands urgent medical attention. ©2013 MFMER | slide- ‹#› Michelle van Ryn, PhD, vanryn.michelle@mayo.edu August 25, 2015 Unconscious Bias In Healthcare APHA Webinar on Unequal Treatment: The unconscious patient is unable to ensure their own safety and in deeper levels of coma may be unable to protect their own airway. Physiologically, the brain stem is functioning but the cerebral cortex is not, and patients can survive for several years requiring full-time nursing care. B. Trapezius pinch. Unconsciousness is a state which occurs when the ability to maintain an awareness of self and environment is lost. The frequency of recording will be based on the patient’s clinical condition. Abstract. They are: This condition is caused by a generalised and progressive loss of cortical tissue in the brain. Physiologically, the brain stem is functioning but the cerebral cortex is not, and patients can survive for several years requiring full-time nursing care. Initial investigations in an unconscious patient. As the ABC assessment is undertaken, other team members should be: connecting the patient to a cardiac monitor and oxygen saturation probe. Figure 28.6 Motor responses. Some neuro-rehabilitation units use a structured technique for assessing various sensory aspects of communication, movement awareness and wakefulness, known as SMART (sensory modality assessment and rehabilitation technique –, There is ongoing debate, both in the UK and other countries, about the moral, ethical and legal issues surrounding the care and treatment of these individuals and the dilemma posed by some patients to ‘the right to die’ and withdrawal of treatment has received considerable professional, public and political attention over recent years (Porter 2005) (see.

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