By S. Marik. Columbia Union College. 2018.
Finally buy forzest 20 mg without a prescription impotence in men symptoms and average age, in case you hear this point from other sources (but don’t worry about it unduly) buy 20mg forzest visa erectile dysfunction treated by, there is what some think to be a very, very rare variant of MS (others think it might be a separate disease), that can lead to death in a few months. Symptoms of MS There are many symptoms associated with MS that occur to a greater or lesser degree. They can, for example, include problems with: • urinary and bowel function • pain and changes in sensation and dizziness • tiredness • depression and cognitive or memory impairment • mobility • speech and eating difﬁculties • problems with eyesight and hearing. Sometimes this process affects one set of nerves, and sometimes it affects several sets. This is often called ‘an episode’, or ‘attack’ or, when it recurs, an ‘exacerbation’, ‘relapse’ or ‘ﬂare-up’ of MS. Symptoms may almost disappear as some repair of the myelin takes place, particularly early in the disease, and ‘inﬂammation’ or swelling around the damaged areas subsides over the course of a few hours or sometimes days. When such symptoms disappear or become less severe, this process is usually called ‘a remission’, but there is always likely to be some residual damage to the nerves involved. Thus the same symp- tom is likely to reappear again, but this may not be for days, weeks, months, and sometimes for many years. As the disease progresses, dam- age will occur at new nerve sites and, from time to time, new symptoms will appear. Some people have one or two attacks or relapses and then there are no further symptoms for many years. At the other extreme some people may experience almost continuous progression without any distinct remissions or attacks, but just a general decline in either sensory or mus- cle control, or both. In between these two extremes is the most frequent pattern of MS, consisting of shorter periods of attacks or relapses, sepa- rated by longer periods of gradual recovery, i. Progression of symptoms MS is known as a progressive neurological disease, even though we are still not good at predicting when, how and in what ways it will progress. Most people will experience a recurrence of the same symptoms that they had before, although the degree and the timing of that recurrence is difﬁcult to judge precisely. From time to time, new symptoms will probably appear, as the course of the disease affects another nerve pathway. They may be linked in some way to those you have already experienced, but completely new sen- sory or motor (movement-related) symptoms may appear. It is important, however, not to be constantly preoccupied in waiting for a new symptom to appear. It may occur in weeks or months, but you may be one of the more fortunate people with MS who never has another new symptom. As a very rough guide, at any one time about one-third of all people with MS appear to be experiencing no serious relapses, about one-third are having a distinct relapsing-remitting course with relapses of varying severity, and about one-third are experiencing a chronically progressive course. About one-third of all people with MS have serious disabilities and require signiﬁcant everyday support, and a further third require 6 MANAGING YOUR MULTIPLE SCLEROSIS what might be described as signiﬁcant lifestyle adjustments to manage their lives with MS. Symptoms that can catch you unawares Two particular symptoms are reported by people with MS as having quite an effect on many aspects of everyday life in unexpected ways. Fatigue Lots of people with MS complain that they sometimes feel extra- ordinarily tired. This tiredness, which is usually described as MS fatigue, can be very unpredictable and difﬁcult to manage. You need to pace yourself carefully and be prepared to adapt your life from day to day, even hour to hour. Bladder problems Up to 80–90% of people with MS have some problems of this kind, although the nature of these problems differs widely. Early on in the disease there may be very few difﬁculties: a little more ‘urgency’ perhaps, i. Whilst these particular problems may be considered medically to be modest or minor, for people with MS they involve quite a lot of thought and careful planning. Much later in the disease process these problems can become substantial, and require several strategies to manage them (discussed in Chapter 4). An important point concerning all bladder problems associated with MS is that some recent studies have found a high proportion of those with urinary problems also have bladder infections that may exacerbate those problems considerably, as well as possibly causing pain. Such infections can be cured, in most cases with appropriate antibiotic treatment. So get help from your doctor on this issue and don’t just assume that all your difﬁculties with your bladder are caused directly by the MS itself. Outlook Medium term In general the progression of MS is slowest, and the outlook (often called the prognosis), is best for people who are diagnosed under the age of 40, and who have an initial relapsing-remitting history. However, the long- MULTIPLE SCLEROSIS EXPLAINED 7 term prognosis, even in these cases, is impossible to predict with any certainty.
This low-functioning client chose the panda bear image 20 mg forzest visa losartan causes erectile dysfunction, and other mem- bers within the group framed the picture by coloring the rim buy 20 mg forzest overnight delivery low testosterone erectile dysfunction treatment, accenting it 6. How- ever, as it reached the ﬁfth member of the group (an infantalized and angry youth placed out of the home for the ﬁrst time, whom I will call Tony), this member maliciously scribbled over the collage image. As no rebuff was forthcoming, he anxiously awaited the next project, and on this one he wrote derogatory epithets. It was only upon Tony’s leaving the group that the verbal processing of respect, feelings expression, and trust could be explored. However, it is important to note that Tony’s imagery (what he chose and drew individually) provided a secondary level to the discussion. In review- ing his image I believed it metaphorically described his deep sense of loss, fear, and feelings of entrapment (see Figure 6. By the time Tony had passed his plate there was very little room left for others to interact. They were consequently relegated to reinforcing the spider’s trap by adding circles of color. When Tony returned to the group, timid and apologetic, the discussion focused on empathy, not merely for how Tony had defaced others’ art (and therefore lost trust) but for the feelings of loneliness that all individuals feel 6. Through the symbolism of Tony’s plate, and the subsequent interpretation, the feed- back became central as the group members explored the possible fear be- hind Tony’s anger in a mutual partnership. The importance of a mutual un- derstanding cannot be overstated, as it is the very foundation on which objective empathic awareness is based. One of the beneﬁts of utilizing art therapy within the therapeutic hour is that it allows members to practice new ways of behaving in a safe and supportive atmosphere. To take advantage of this, I often link directives from one week to the next in an attempt to reinforce goals and strengthen the skills reviewed in the prior group meeting. Accordingly, in the following group session I gave the same members a sheet of paper with predrawn black boxes. As they passed the artwork, I further informed them that no one was allowed to cross the boundary of the black box. In this session, unlike the previous one, Tony respected the space, feel- ings, and emotions of others on both a symbolic and a conscious level. On the second pass the victim of his earlier defacing attained revenge by drawing a circle within Tony’s square. When Tony verbally protested, another peer calmly intervened and offered him a second sheet of paper (see Figure 6. In so doing he symbolically asserted his sense of self while defending the space as purely his. The peer who offered Tony a second sheet of paper provided him with a constructive response to a situational stressor. This manner of peer-to-peer interaction serves to advance the client’s interpersonal learning as group members acknowledge and become con- cerned with one another’s feelings and thoughts. When the objective is feelings oriented, in this case empathic identiﬁ- cation, the use of a tangible medium such as plasticene clay frequently proves beneﬁcial. The process of creating in a three-dimensional form of- fers the artist a deeper level of accomplishment, because the experience of working with a physical medium requires intellectual thought, sheds light on the unconscious, and provides kinetic relief. In a group session with high-functioning adolescent females I adapted Yalom’s (1983) verbal exercise into an art therapy directive. I instructed the group to make a clay animal that represented the self and, when this was complete, to create another clay animal for the person sitting on their right. Yalom notes that "it is important to explain this exercise carefully so that the members fully understand that they are to choose on the basis not of physical resemblance, but of some trait of the animal which is similar to a trait of the person" (p. One client, the scapegoat of the group, fashioned a penguin as an image of the self and conversely created a black cat for the member to her right (see Figure 6. In the discussion phase she commented that the penguin char- acterized her since "penguins don’t mind the cold," while the black cat sym- bolized the member to her right "because you don’t want to mess with her. Accordingly, for the female who created the penguin, this per- sonal symbol and her resultant verbal statement "penguins don’t mind the cold" constituted a metaphor for her peer’s "coldness" and her ensuing pro- tective need to insulate herself. For all the peers, this expression, coupled with an interactive process that was largely centered on anxiety, gave im- petus to planned directives that focused on acceptance, feeling motiva- tion, and cooperation. In this vein, it was integral for these females to experience and explore their anxiety (rather than distracting themselves through attack) in re- sponse to member-to-member interactions. Thus, its creation and presentation held numerous levels of meaning, both personal and col- lective. It was therefore important to process and discuss the image on a deeper level than the creator’s statement ("Jimmy makes beautiful things, and in case we have to add this to another project I want him to do it").
In one of his ﬁrst sessions he was introduced to the art room and took an immediate interest in the sand tray proven forzest 20 mg erectile dysfunction pump implant. The sand tray discount forzest 20 mg without prescription erectile dysfunction drug therapy, much like art therapy, gives ex- pression to nonverbal emotional issues in a symbolic form that guards the individual from anxiety-laden conﬂict. The front of the tray symbolizes freedom (motorcycle), escape (palm trees), and a partially buried serpent (far left side), which I interpreted as representing the destructive forces that threaten from within. The back of the tray con- tains what Gregory described as his father watching sports on television (which was the only activity that continued to unite the two) and a grave- yard (right rear), which he was reluctant to discuss. I then asked him about the praying mantis (left rear), which is situated very close to the father symbol. In an uncharacteristic explanation Gregory spoke at length about how praying mantises ﬁght and kill their opponents with deadly accuracy. Additionally, this substitution was not conﬁned to the art room or the miniatures. Gre- gory’s interpersonal relationships were fraught with resentment as the in- tensity of his animosity shifted from the father to less intrusive victims. In the early stages of family therapy I utilized quiet listening and clari- fication to establish a safe environment that would foster insight and growth. Gregory’s symptomatic behavior began to reﬂect the problems sur- rounding the marital dyad as issues related to complementarity (Nichols, 1984) and projective identiﬁcation (Klein, 1946) came to the forefront. The basic structure of this exercise pairs the family constellation into even teams. Often I will direct speciﬁc family members to draw with each other; however, select situations call for a less directive approach and in these cases I allow the individuals to decide for themselves. After each pair appoints a leader, I direct them to think of a drawing they would like to complete. Through verbal communication the leaders help their partners to render an exact duplicate. If you recall the case review on Dion, in Chapter 5, this technique was illustrated through his rendering of Figure 5. The paired communica- tion drawing can be utilized in a multiplicity of ways and with any number of people. If you are in a group setting, or if the family has an uneven num- ber of participants, one individual can take on the role of leader while the remainder of the group members form a horseshoe with their backs turned away from one another. As with the majority of art therapy directives, the mental health professional is hindered only by a lack of creativity. Thus, you can employ numerous variations on this technique to maximize any number of goals or objectives. Due to this family’s dysfunctional interaction patterns, their invisible loyalties (Boszormenyi-Nagy & Spark, 1973), and regressive coping styles, I opted to determine the teams. As is evident from the completed drawings, the parents—the leaders of this communication-driven exercise—did not accomplish the goal of an exact rendering. The differences begin with the physical direction of the 280 Two’s Company, Three’s a Crowd? In the feed- back stage of this directive the family’s spontaneous comments focused on these tangible, visual, and clearly noticeable differences. Although these obvious signs engendered a spirited discussion, as I noted in Chapter 6, without illumination of the process the session will not be generalized because the interrelationships will be ignored. For this rea- son, I initiated a commentary on the interaction, which was fraught with conﬂict, power, and control issues. Of further note is that while the mother was directing her son, he not only abandoned the task when he did not understand her direction but was verbally cruel and judgmental, blaming his difﬁculty on her inadequacies. Similarly, the father, while giving instructions to Gregory, became frus- trated with Gregory’s questions and responded in a manner that was no- ticeably vague and distancing. In an effort to clarify, confront, and interpret I directed the discussion by asking the family which suggestions the partners had listened to and which ones they ignored. I followed this question by asking all the family members if they had listened the same way today as they generally did. The responses to both questions ranged from indifference and disregard (manifestation of transference by the younger son and father) to self- justiﬁcation (a sense of cultural obligation on the mother’s part) and re- 281 The Practice of Art Therapy proach toward both his father and brother (defensive functioning by Gre- gory). This came about because the younger son made the brusque comment that if he had been the leader the results would have been better. Consequently, the father unexpectedly decided to give his son his wish, and the children thus became the leaders. Beyond the placement of the paper (which was perfect in both cases), the younger son did not pro- duce an improved response, as he once again became frustrated and sud- denly discarded the project while attempting to describe the vertical and horizontal lines. Equally, the father’s aggravation became increasingly ap- parent as Gregory was describing the diamond shape that connected to the outer lines.
Type II discount 20 mg forzest overnight delivery erectile dysfunction treatment natural, or beta error proven forzest 20 mg erectile dysfunction 19 years old, occurs when an investigator concludes that there is no effect or no difference when in fact a true difference exists in the underlying population (3). Quantiﬁcation of the likelihood of alpha error is provided by the familiar p value. In effect, the difference observed in a sample is due to chance variation rather than a true underlying difference in the population. Type I Error There are limitations to the ubiquitous p values seen in imaging research reports (4). In other words, there could be a very large difference between two groups under study, but the p value might not be signiﬁcant if the sample sizes are small. Conversely, there could be a very small, clinically unimportant difference between two groups of subjects or between two Chapter 2 Critically Assessing the Literature 21 imaging tests, but with a large enough sample size even this clinically unimportant result would be statistically signiﬁcant. Because of these limitations, many journals are underemphasizing the use of p values and encouraging research results to be reported by way of conﬁdence intervals. Conﬁdence Intervals Conﬁdence intervals are preferred because they provide much more infor- mation than p values. Conﬁdence intervals provide information about the precision of an estimate (how wide are the conﬁdence intervals), the size of an estimate (magnitude of the conﬁdence intervals), and the statistical signiﬁcance of an estimate (whether the intervals include the null) (5). If you assume that your sample was randomly selected from some pop- ulation (that follows a normal distribution), you can be 95% certain that the conﬁdence interval (CI) includes the population mean. More precisely, if you generate many 95% CIs from many data sets, you can expect that the CI will include the true population mean in 95% of the cases and not include the true mean value in the other 5% (4). Whereas the p value is often interpreted as being either statistically signiﬁcant or not, the CI, by providing a range of values, allows the reader to interpret the implications of the results at either end (6,7). In addition, while p values have no units, CIs are presented in the units of the variable of interest, which helps readers to interpret the results. The CIs shift the interpretation from a qualitative judgment about the role of chance to a quantitative estimation of the biologic measure of effect (4,6,7). As an example, two hypothetical transcranial circle of Willis vascular ultrasound studies in patients with sickle cell disease describe mean peak systolic velocities of 200cm/sec associated with 70% of vascular diameter stenosis and higher risk of stroke. However, the narrower conﬁdence intervals for the larger study reﬂect the greater precision, and indicate the value of the larger sample size. For a smaller sample: 50 95 CI 200 1 96( ) 50 95% CI 200 14 186 214 For a larger sample: 50 95 CI 200 1 96( ) 500 22 C. Type II Error The familiar p value does not provide information as to the probability of a type II or beta error. The size of the sample studied may be too small to detect an important difference even if such a difference does exist. The ability of a study to detect an important difference, if that difference does in fact exist in the underlying population, is called the power of a study. Power analysis can be performed in advance of a research investigation to avoid type II error. Power Analysis Power analysis plays an important role in determining what an adequate sample size is, so that meaningful results can be obtained (8). Power analy- sis is the probability of observing an effect in a sample of patients if the speciﬁed effect size, or greater, is found in the population (3). Mathemati- cally, power is deﬁned as 1 minus beta (1 -b), where b is the probability of having a type II error. The other type of error is type I or alpha (a), also known as false positives in a study population (7). By accomplishing this, false-negative and false-positive results are eliminated, respectively. In practice, however, powers near 100% are rarely achievable, so, at best, a study should reduce the false negatives b and false positives a to a minimum (3,9). Achieving an acceptable reduc- tion of false negatives and false positives requires a large subject sample size. Optimal power, a and b, settings are based on a balance between sci- entiﬁc rigorousness and the issues of feasibility and cost. Studies with more com- plete reporting and better study design will often report the power of the study, for example, by stating that the study has 90% power to detect a dif- ference in sensitivity of 10% between CT angiography and Doppler ultra- sound in carotid artery disease. The risk of an error from bias decreases as the rigorousness of the study design and analysis increases. Randomized controlled trials are considered the best design for minimizing the risk of bias because patients are ran- Chapter 2 Critically Assessing the Literature 23 domly allocated. This random allocation allows for unbiased distribution of both known and unknown confounding variables between the study groups. In nonrandomized studies, appropriate study design and statisti- cal analysis can only control for known or measurable bias. Detection of and correction for bias, or systematic error, in research is a vexing challenge for both researchers and users of the medical literature alike. Maclure and Schneeweiss (11) have identiﬁed 10 different levels at which biases can distort the relationship between published study results and truth.
At running speed of 6 m/s this force is about three body weights order forzest 20 mg visa impotence essential oils, which is in agreement with our estimate discount 20mg forzest erectile dysfunction non prescription drugs. A typical time history of vertical ground force measured by using a force plate in the study of Bobbert et al. We might ask the question whether the peak ground force measured during running qualifies to be called impulsive force? According to our definition, an impulsive force must be so much greater than any other force acting on a body so that the velocity of the body changes sharply during the brief period the impulsive force acts. Also, the duration of ap- plication of impact force must be so short that the position of the body does not change appreciably during impact. The leftmost figure shows the segment orientations on the last frame before touchdown. As can be seen in the figure, there is a small change in the configuration of the run- ner during the first 100 ms of the contact. Otherwise, impact force is not an impulsive force in the strictest sense—neither it is too large compared to the body weight nor does the configuration of the runner remains con- stant during the course of its application. The foot sus- tains impact forces and reduces potential injury to the body by deform- ing upon striking the ground. If the foot were a rigid object, the ground reaction force acting on it would be of great magnitude and short dura- tion. The bones of the foot, however, are tied together by flexible liga- ments and the movement of these bones relative to each other is also con- trolled by tendons. As the foot deforms in response to the force of impact, the ligaments and tendons stretch, absorbing much of the shock. As a result, the impulse is caused by a more sustained force of smaller amplitude. For example, in running, the impulse of collision has both a tangential and normal com- ponent at the surface of contact. Condition b is not satisfied when a ball dropped onto a hard surface rebounds from the surface. In this section we relax these two assumptions and consider impulse in more general terms. The times ti and tf represent the initial and final instants of a time in- terval during which the spatial positions of the two bodies remain essen- tially the same. Let P and P9 designate points that come into contact with each other during the collision of two bodies A and B. Let n be the unit vector in the direction of the common normal to the contact surface. Let T denote the common tangent plane to the surfaces of A and B at the point of contact. When a runner hits the asphalt with one foot, the unit vector n could be chosen as the unit normal vector to the as- phalt pointing outward from the ground. This is because both the foot and the running shoe are much more deformable than the asphalt, and there- fore, at the point of contact, the shoe would assume the curvature of the asphalt ground. Note that although the direction of n is uniquely deter- mined by the tangent plane T, the sense of direction of n is arbitrary. Let us next resolve the velocities at the point of contact into two com- ponents, one in the direction of the normal n and the other in the tangent plane T: vP 5 uP n 1 wP (7. A parameter e called coefficient of restitution is introduced as a mea- sure of the capacity of colliding solids to rebound from each other: e 5 (uP 2 uP9 )/(uP9 2 uP ) (7. When two solids stick at the point of impact, the collision is said to be plastic and e 5 0. The coefficient of restitution is very nearly zero if one of the colliding solids is made of soft clay. In the opposite end, when e 5 1, the velocity of approach has the same magnitude of velocity of separa- tion in the n direction. In this case the impact of collision does not lead to dissipation of mechanical en- ergy. A ball dropped from a height h onto a hard planar surface will re- bound to the same height after the collision if e 5 1. It must be emphasized that although parameter e is relatively easy to measure, its interpretation as a measure of deformability of the colliding bodies is difficult because it depends upon the materials, geometry, and initial velocities. To address this question, let us resolve the impulse z into two components: z 5 n 1 t (7. Most accidental falls occur, on the other hand, when this inequality cannot be satisfied. In such cases there is slip at time tf and the impulse of collision in the tangential plane is related to the impulse in the normal direction by the following equation: iti 5 m ini (7. At the in- stant the man hits the rock, his leg makes an angle of u with the vertical axis.
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