By S. Wenzel. Manhattan College. 2018.
Seeing the patient through talks out and acts out those things that concern [his or her] medical care without giving up the nur- him—good purchase artane 2mg amex, bad and indifferent purchase 2mg artane otc. If nothing more is turing will keep the unique opportunity that personal done with these, what the patient gets is ventilation or closeness provides to further [the] patient’s growth catharsis, if you will. This area empha- beyond—to what I call “nurturer”—someone who fosters learning, someone who fosters growing up sizes the social, emotional, spiritual, and intellec- emotionally, someone who even fosters healing. Through the closeness The second aspect of the nursing process is shared offered by the provision of intimate bodily care, with medicine and is labeled the “cure. Hall (1958) comments on he wants to go and will take or refuse help in get- the two ways that this medical aspect of nursing ting there—the patient will make amazingly more may be viewed. It may be viewed as the nurse rapid progress toward recovery and rehabilitation” assisting the doctor by assuming medical tasks or (Hall, 1958, p. Hall believed that through this process, the patient would emerge as a whole person. The other view of this aspect of nursing is Knowledge and skills the nurse needs in order to to see the nurse helping the patient use self therapeutically include knowing self and through his or her medical, surgical, and learning interpersonal skills. The goals of the inter- rehabilitative care in the role of comforter personal process are to help patients to understand and nurturer. The other view of this aspect of nursing tance of nursing with the patient as opposed to is to see the nurse helping the patient through his nursing at, to, or for the patient. Hall reﬂected on or her medical, surgical, and rehabilitative care in the value of the therapeutic use of self by the pro- the role of comforter and nurturer. What made the love and trust the patient enough to work with him Loeb Center uniquely different was the model of professional nursing that was implemented under Lydia Hall’s guidance. The center’s guiding philos- The nurse who knows self by the same ophy was Hall’s belief that during the rehabilitation token can love and trust the patient phase of an illness experience, professional nurses enough to work with him professionally, were the best prepared to foster the rehabilitation rather than for him technically, or at him process, decrease complications and recurrences, vocationally. Her goals cease being tied up with She saw this being accomplished by the “where can I throw my nursing stuff around,”or “how special and unique way nurses work with can I explain my nursing stuff to get the patient to do patients in a close interpersonal process what we want him to do,” or “how can I understand with the goal of fostering learning, growth, my patient so that I can handle him better. In She saw this being accomplished by the special and this way, the nurse recognizes that the power to heal unique way nurses work with patients in a close in- lies in the patient and not in the nurse unless she is terpersonal process with the goal of fostering learn- healing herself. At the Loeb Center, ability to help the patient tap this source of power in nursing was the chief therapy, with medicine and his continuous growth and development. A new comes comfortable working cooperatively and con- model of organization of nursing services was im- sistently with members of other professions, as she plemented and studied at the center. Hall stated: meshes her contributions with theirs in a concerted program of care and rehabilitation. She will facilitates the interpersonal process and invited the be involved not only in direct bedside care but she will patient to learn to reach the core of his difﬁculties also be the instrument to bring the rehabilitation while seeing him through the cure that is possible. Specialists in re- Through the professional nursing process, the pa- lated therapies will be available on staff as resource tient has the opportunity of making the illness a persons and as consultants. The 80-bed unit The Loeb Center for Nursing was staffed with 44 professional nurses employed and Rehabilitation around the clock. Professional nurses gave direct patient care and teaching and were responsible for Lydia Hall was able to actualize her vision of nurs- eight patients and their families. Senior staff nurses ing through the creation of the Loeb Center for were available on each ward as resources and men- Nursing and Rehabilitation at Monteﬁore Medical tors for staff nurses. The center’s major orientation was rehabil- nurses there was one nonprofessional worker called itation and subsequent discharge to home or to a a “messenger-attendant. Doctors referred patients to the center, and Instead, they performed such tasks as getting linen a professional nurse made admission decisions. Morning and evening shifts were the teachings of Harry Stack Sullivan, Carl Rogers, staffed at the same ratio. Nurses were taught to less; however, Hall (1965) noted that there were use a nondirective counseling approach that em- “enough nurses at night to make rounds every hour phasized the use of a reﬂective process. Within this and to nurse those patients who are awake around process, it was important for nurses to learn to the concerns that may be keeping them awake” know and care for self so that they could use the self (p. In most institutions of that time, the number therapeutically in relationship with the patient of nurses was decreased during the evening and (Hall, 1965, 1969). Hall reﬂected: night shifts because it was felt that larger numbers If the nurse is a teacher, she will concern herself with of nurses were needed during the day to get the the facilitation of the patient’s verbal expressions and work done. Hall took exception to the idea that will reﬂect these so that the patient can hear what he nursing service was organized around work to be says. Through this process, he will come to grips with done rather than the needs of the patients. Lydia Hall directed the Loeb Center from 1963 Rather than strict adherence to institutional rou- until her death in 1969. Genrose Alfano succeeded tines and schedules, patients at the Loeb Center her in the position of director until 1984.
Neurons Communicate Using Electricity and Chemicals The nervous system operates using an electrochemical process (see Note 3 quality artane 2mg. An electrical charge moves through the neuron itself and chemicals are used to transmit information between neurons generic 2 mg artane with visa. Within the neuron, when a signal is received by the dendrites, is it transmitted to the soma in the form of an electrical signal, and, if the signal is strong enough, it may then be passed on to the axon and then to the terminal buttons. If the signal reaches the terminal buttons, they are signaled to emit chemicals known as neurotransmitters, which communicate with other neurons across the spaces between the cells, known as synapses. Video Clip: The Electrochemical Action of the Neuron This video clip shows a model of the electrochemical action of the neuron and neurotransmitters. The electrical signal moves through the neuron as a result of changes in the electrical charge of the axon. Normally, the axon remains in the resting potential, a state in which the interior of the neuron contains a greater number of negatively charged ions than does the area outside the cell. When the segment of the axon that is closest to the cell body is stimulated by an electrical signal from the dendrites, and if this electrical signal is strong enough that it passes a certain level or threshold, the cell membrane in this first segment opens its gates, allowing positively charged sodium ions that were previously kept out to enter. This change in electrical charge that occurs in a neuron when a nerve impulse is transmitted is known as the action potential. Once the action potential occurs, the number of positive ions exceeds the number of negative ions in this segment, and the segment temporarily becomes positively charged. The electrical charge moves down the axon from segment to segment, in a set of small jumps, moving from node to node. When the action potential occurs in the first segment of the axon, it quickly creates a similar change in the next segment, which then stimulates the next segment, and so forth as the positive electrical impulse continues all the way down to the end of the axon. As each new segment becomes positive, the membrane in the prior segment closes up again, and the segment returns to its negative resting potential. In this way the action potential is transmitted along the axon, toward the terminal buttons. The entire response along the length of the axon is very fast—it can happen up to 1,000 times each second. An important aspect of the action potential is that it operates in an all or nothing manner. What this means is that the neuron either fires completely, such that the action potential moves all the way down the axon, or it does not fire at all. Thus neurons can provide more energy to the neurons down the line by firing faster but not by firing more strongly. Furthermore, the neuron is prevented from repeated firing by the presence of a refractory period—a brief time after the Attributed to Charles Stangor Saylor. Neurotransmitters: The Body’s Chemical Messengers Not only do the neural signals travel via electrical charges within the neuron, but they also travel via chemical transmission between the neurons. Neurons are separated by junction areas known as synapses, areas where the terminal buttons at the end of the axon of one neuron nearly, but don’t quite, touch the dendrites of another. The synapses provide a remarkable function because they allow each axon to communicate with many dendrites in neighboring cells. Because a neuron may have synaptic connections with thousands of other neurons, the communication links among the neurons in the nervous system allow for a highly sophisticated communication system. When the electrical impulse from the action potential reaches the end of the axon, it signals the terminal buttons to release neurotransmitters into the synapse. A neurotransmitter is a chemical that relays signals across the synapses between neurons. Neurotransmitters travel across the synaptic space between the terminal button of one neuron and the dendrites of other neurons, where they bind to the dendrites in the neighboring neurons. Furthermore, different terminal buttons release different neurotransmitters, and different dendrites are particularly sensitive to different neurotransmitters. The dendrites will admit the neurotransmitters only if they are the right shape to fit in the receptor sites on the receiving neuron. For this reason, the receptor sites and neurotransmitters are often compared to a lock and key (Figure 3. The neurotransmitters fit into receptors on the receiving dendrites in the manner of a lock and key. When neurotransmitters are accepted by the receptors on the receiving neurons their effect may be either excitatory (i. Furthermore, if the receiving neuron is able to accept more than one neurotransmitter, then it will be influenced by the excitatory and inhibitory processes of each. If the excitatory effects of the neurotransmitters are greater than the inhibitory influences of the neurotransmitters, the neuron moves closer to its firing threshold, and if it reaches the threshold, the action potential and the process of transferring information through the neuron begins. Neurotransmitters that are not accepted by the receptor sites must be removed from the synapse in order for the next potential stimulation of the neuron to happen. This process occurs in part through the breaking down of the neurotransmitters by enzymes, and in part through reuptake, a process in which neurotransmitters that are in the synapse are reabsorbed into the transmitting terminal buttons, ready to again be released after the neuron fires. More than 100 chemical substances produced in the body have been identified as neurotransmitters, and these substances have a wide and profound effect on emotion, cognition, and behavior. Neurotransmitters regulate our appetite, our memory, our emotions, as well as our muscle action and movement.
Falsely high levels can be caused by carbon monoxide order 2 mg artane with amex, which makes blood bright red buy generic artane 2mg on-line. Bedside oximetry has reduced the frequency with which blood gas samples need to be taken. Overall pH of blood is the balance between respiratory and metabolic function (see Figure 19. Acidosis or alkalosis from one quadrant will, with time and effective homeostatic mechanisms, compensate for excess in another to maintain a ‘neutral’ blood pH of 7. If compensation is occurring, then identify whether respiratory function is compensating for metabolic acidosis/alkalosis, or vice versa. This will usually need to be analysed in the context of knowledge about the patient’s pathological condition: for example, respiratory failure causes respiratory acidosis, while renal failure causes metabolic acidosis. Respiratory compensation occurs quickly (within a few minutes), but metabolic compensation can take hours or days to occur. Hence, metabolic compensation will only occur in response to prolonged respiratory complications. If pH is life-threatening and compensatory mechanisms cannot be adequately mimicked (e. In practice, sodium bicarbonate is sometimes given (in small aliquots), but exogenous acid is rarely given. Even with critical illness, compensatory mechanisms are often safer than exogenous intervention. This chapter has suggested ‘normal’ values, although there are slight variations between authors. However, as with almost any measurement, trends are more important than absolute figures. Despite their name, blood gas samples are used to monitor both respiratory and metabolic function; this chapter has therefore offered detailed discussion of acid-base balance. Occasional articles appear in nursing and medical texts; Coleman and Houston (1998) outline acid-base balance, while Szaflarski (1996) gives a comprehensive overview of potential errors from arterial blood gas sampling. This chapter describes more frequently used modes, with some noninvasive options, to extend knowledge rather than develop psychomotor skills. Cardiovascular and respiratory function is interrelated, and so although another chapter discusses respiratory monitoring, this chapter includes monitoring internal respiration (e. Formulae are not included, as microchip technology has replaced the need for nurses to calculate them. Invasive equipment increases infection risks (see Chapter 15); risks increase with more invasive equipment (usually used on sicker, so more immunocompromised, patients). Aseptic technique and infection control are especially important, therefore, with all invasive equipment. All monitoring equipment is diagnostic rather than therapeutic, and should be removed once risks outweigh benefits, or maximum time limits are reached. Consistency between measurements (and measurers) is therefore as important as accurate technique. Arterial blood pressure This is the pressure exerted on arterial walls and so affects perfusion and oxygen/nutrient supply to, and waste removal from, tissues. Intensive care nursing 178 Flow is affected by driving force (cardiac output) and viscosity, while resistance (afterload) is determined by vascular (arteriole) and interstitial resistance (e. Small (capillary) vessels are especially susceptible to poor flow from high viscosity. Pressure progressively alters throughout the cardiovascular system; distal measurement (e. Left ventricular myocardial oxygen supply can only occur when coronary artery pressure exceeds left ventricular pressure (diastole), and so tachycardia (reduced diastolic time) reduces myocardial oxygen supply while increasing demand. Most machines overestimate low pressures and Haemodynamic monitoring 179 underestimate high pressures (Gomersall & Oh 1997) so that they are least useful when most needed. Cuff inflation pressures of noninvasive monitors can be high and uncomfortable and should be adjusted to give safe, but not excessive, margins between each patient’s systolic and cuff inflation pressure. Nurses should check inflation pressure, trying cuffs on themselves to realise what their patients will be subjected to. Arterial tonometry displays beat-to-beat waveforms and digital readings of pressure. Reflecting principles of intra-arterial monitoring, this is potentially useful, but not yet reliable enough to replace invasive monitoring (Windsor 1998). Intra-arterial measurement Direct (invasive) arterial pressure monitoring (see Figure 20. Rapid upstrokes with sharply defined apexes indicate good left ventricular contractility (Windsor 1998).
Once the mode of access is determined purchase 2 mg artane with amex, the postmortem dental examination begins with digital radiographs order 2 mg artane visa. In some forensic cases a single arch bitewing projec- tion image is used on some periapical radiographs to allow comparisons to antemortem bitewings. Once the digital radiographs are completed the post- mortem visual examination is carried out, with the radiographs available for review whenever necessary. Te leader performs the visual examination and places the digital sensor or flm to assist with radiographs. Te assistant operates and aims the handheld x-ray source and assists the leader with the visual examination. Te third member of the team is the computer operator, who verifes correct radiographic images, controls the progress through the visual examination and radiographs, and enters the dental data into the electronic chart as the examination progresses. Once the examination is complete, the computer operator reads back all the recorded data for the leader and assistant to verify as quality control. Quality control is a team efort and all checks should lead to the production of a pristine postmortem record with photographs, radiographs, and charting. If done properly, there should be no need to reexamine the case until fnal release verifcation afer a positive identifcation has been made. Te antemortem section, perhaps, has the most difcult job in the odontology section. Tey are responsible for gathering information on dentists of record, working with investigators to assess needs for further information searches, and translat- ing the records of treating dentists into a standard form for comparisons. When all of the postmortem work is completed, the antemortem section is still working and busy up to the close of the overall operation. Hopefully all the workers have been trained in similar fashion and are aware of protocols in use. For extended operations, new workers are needed to replace those that have fnished their tour of duty. Te chief odontologist should have a stan- dard procedure for reviewing applicants and verifying the accuracy of their credentials. Each new member needs to be closely monitored to ensure he or she understands what his or her role is to be and how important accuracy is to the identifcation process. Experienced and new workers must be moni- tored for physical and emotional stress and each case handled appropriately. Tese identifcation records are then given to the overall team leader or control center for processing. Most operations then require the identifying section to review the identifcation and all records before fnal release of the victim’s body to the family. It assigns a unique number to each case and will not allow duplication of numbers. Digital imaging eliminates darkrooms and chemical processors and dental identifcation in multiple Fatality incidents 259 instead allows immediate images for viewing and comparison. Digital imaging requires imaging sofware to capture, enhance, and store the images. Te system captures the radiographic image from a wired sensor and stores these images for viewing. It has also been seen that this setup com- bined with three dental postmortem bays can handle large numbers of cases in each twelve-hour shif. Tis system prevents past bottlenecks in the dental identifcation morgue when conventional flm radiography and paper records would invariably impede the fow. Dual-screen computer technology that enables gurney-side and computer input team members to view the informa- tion simultaneously is already possible and has been tested in the laboratory. Tis allows the mail merge features of Microsof Word to be used to create a range of reports that may be needed by local authorities or other groups. Te fnal records from an opera- tion in the form of a database can be given to the responsible representative of the agency in charge of the operation in digital form for their use or retrieval at a later date. Tis will also allow for additional records to be added by the local authorities in charge of postaction operations. All the dental records, digital images, and digital radiographs from the Hurricanes Katrina and Rita response were contained in 20 gigabytes of information and presented to the Louisiana authorities in a removable computer drive. All antemortem records were scanned into digital form and then were sealed and boxed for storage. Be sure the system backs up regularly and gives a dependable and accessible backup copy of the data. Check frequently to ensure the backup will work to restore the information in case the system fails. In training sessions the odontology section must study modes and methods available to their particular settings. Do not expect to be able to switch from conventional to digital systems on the fy. Te transition is time-consuming and could be prevented if all of this was approved and covered in training sessions. In the opinion of this author, there is a reasonable cutof for the use of conventional methods.
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