Informative and practical video on managing stress by Dr. Mike Evans.
about 4 years ago
Gestational Diabetes A transient, self-limiting, hyperglycaemia, which occurs during pregnancy due to maternal endocrine changes. Glucose Control Insulin cause…
over 9 years ago
This student made video formed part of an educational tool to raise the issue of delirium in patients. It is extremely common in those placed in the Intensive Care Unit, with over 80% of those who are intubated developing some form of the disorder. The video shows how a CAM-ICU test can be performed on a patient, in a clear and informative way. It is important to recognise if a patient is delirious as this can impact on their pain management, a topic which is highly discussed by doctors as being hard to manage.
almost 9 years ago
A Comical Guide to the Delerium OSCE Station is one of a series of comic strip guides created during a 3rd year SSC project to develop mental health e-learning resources for 3rd year medical students at the University of Leeds. The aim was to create a fun and easy way for students to learn how to perform well in a mental health OSCE station.
over 7 years ago
During my GP placement of this year a different GP to the one who normally taught us called us into his consulting room to see a lady with lung cancer and subsequent clubbing. He then suddenly sprung on us the challenge "Name me 17 causes of clubbing!". My colleugue and I fumbled around with some random suggestions, thrown by the acute onset of the task. We were well and truly embarrassed. As a result, I vowed to devise a way to force the causes of clubbing to stay in my head, and this poem (or rap) is the result. Ideally it would have been in the form of a video with a trendy, young rapper delivering it, but I'm right in the middle of exams and time is precious.
over 7 years ago
Ministry of Ethics.co.uk is a non-commercial student-run project aiming to bring learning about Medical Ethics and Law (MEL) into the Web 2.0 era. The website has revision notes, MCQs & EMQs, case videos and scenarios, and allows discussions with other students and professors or lecturers from across the UK and beyond. The website is the perfect revision resource for medical students, clinical students and juniors doctors to learn more about MEL. Doctors are so much more than walking books of facts; they are faced with ethically and legally challenging situations throughout their professional lives. Medical ethics education helps make students aware of the situations that they will face in the clinical setting and suggests appropriate ways of approaching them. In the long term, it aids the development of moral and ethical reasoning that will allow student doctors to understand other people's views, helping them to become more empathetic and caring clinicians. Since it's creation, our website has won a number of prizes including: - Winning Presentation at the 2011 Fifth Conference on Medical Ethics and Law - 2011 BMA Book Awards Highly Commended - 2011 BMJ onExamination Best National E-Learning Resource Prize We hope you enjoy looking at our site and in particular the case scenarios and interactive question bank.
over 7 years ago
This video and other related images/videos (in HD) are available for instant download licensing here: http://www.alilamedicalmedia.com/-/galleries/images-vid...
over 5 years ago
Introduction This post describe the creation of a Stroke Summary video. The aim of this project was to assess the attitudes of medical students towards the use of video animation in medical education. An educational tutorial was produced outlining the basic principles of stroke. This aimed to provide a summary of different aspects relating to stroke, outlined in the Bristol University curriculum. This intended to be a short, concise animation covering stroke presentation, definition and recognition, with an overview of the blood supply to the brain and the classification of stroke presentation used in clinical practice. This was followed by some key facts and a summary of different management stages. After the video animation was produced an assessment of student’s attitudes using an online questionnaire was undertaken. This consisted of ten short questions and an open text feedback for additional comments. The video was then edited with reference to feedback given by students and the results analysed. This report will outline relevant research and project work that lead to this assignment being undertaken. A description of the method followed to generate the video animation and to collect feedback on students will be outlined followed by analysis of results. This will then be discussed in relation to previous work and research. Background There are a number of reasons this project has been undertaken. On a personal level, I have a long-standing interest in teaching and medical education. As part of a previous project I created a series of audio tutorials in cardiovascular medicine and assessed student attitudes to audio learning. The findings of this report showed that a large number of students found these audio tutorials useful and would like more of these available to supplement their learning. One of the questions given to students at this time assessed how useful they found different types of educational material. This project showed students reporting audio tutorials more useful than previously thought, while also reporting that they were not readily available. Although a video tutorial was not provided to them at this time, feedback questions assessed attitudes to video tutorials as a learning resource. Students reported low availability and felt they would be more useful than audio tutorials. Some results from this project are shown in figure 1. Figure 1. Results from previous research by Buick (2007), showing attitudes of students towards different learning tutorials. The majority of students report audio tutorials to be ‘quite useful’ or ‘very useful’. Video tutorials are thought by students to be more useful that audio tutorials, however there is a large proportion that do not have access to these learning resources. As a number of students reported an inability to access to video tutorials, it was thought that creating a video animation tutorial followed by assessing students attitudes would be a useful follow up project. If this is found to be a useful resource, other students may generate video tutorials in the future. Therefore student feedback also assessed attitudes towards authenticity, relating to who generates the tutorial and whether they find the ability to feedback a useful tool. Medical education is widely researched globally, although it is not often a consideration for those studying medicine. Those involved in teaching and educating future doctors have looked at different methods of passing on knowledge. A high quality medical education given to future healthcare professionals is important. It is widely accepted that a better knowledge results in better care for patients and education is at the centre of any healthcare system. This is reflected in the cost of educating medical students and training doctors in the UK. In the 1997 it was reported by the Department of Health that estimates of 200 million pounds would be spent per year for an increase in 1000 medical students being trained in the UK. This suggests that the cost of training a medical student is in the region of £200,0001. Medical education in the UK is split in two halves, with undergraduate and postgraduate training. The Department of Health has recently invested millions of pounds into the development of online tutorials for postgraduate training posts in a number of different specialities. Justification for is given by reducing the cost of training through the use of standardised online tutorials. This will be a more cost effective method than the standard in hospital teaching. This approach has not been undertaken for undergraduate medical education. Universities are seen as primarily responsible for undergraduate training. Many of these institutions have used the Internet to aid teaching and have produced video tutorials. However, as reflected in the previous project (Buick, 2007), resources are often limited and students do not feel they have ready access to these educational tutorials. The benefits of different types of learning resource have been researched. These include online audio downloads (Spickard et al, 2004), practice exam questions and interactive tutorials (Hudsen, 2004). Research showing the benefit of video was shown by Balslev et al (2005) comparing video and written text while teaching a patient case. Balsley et al (2005) found those who learnt using a video presentation rather than those given written text showed a significant increase in data exploration, theory evaluation and exploration. However, there is little research looking specifically at video animation for explaining conditions. Animation software is now available on personal computers and is also possible using Microsoft PowerPointTM, which is the most widely used presentation software. It is clear that recent trends show training can benefit from this type of learning resource. Generation of high quality video tutorials can help students learn while reducing the cost of training. It is for this reason that more material is likely to become available, either from funded production supported by external organisations or by the trainers and trainees themselves who have technology able to produce material such as this on their home computer. Ethical and Legal Issues During the development of this video some ethical and legal issues arose that had to be addressed before a final video could be made. When considering what imagery would be used in the video, I wanted to include pictures of clinical signs relevant to the audio narration. However, taking images from the Internet without prior consent was not thought to be ethical and therefore clinical signs were displayed graphically through drawings and diagrams. Plagiarism and copyright were some of the legal issues surrounding the presentation of medical information. Narrated information was generated using a number of information sources, none of which were exclusively quoted. Therefore an end reference list was generated showing all supporting information sources. Images used in the animation were either self generated or taken from sources such as Wikipedia.org. This resource supplies images under a free software license such as GNU general public license2. This allows anyone to freely use and edit images while referencing the original source. Skills Needed To Develop This Video Animation To generate the video a number I had to develop a number of new skills. Unlike previous work that had been undertaken this media was generated using animation software. To use this effectively I had to research the different functions that were available. To do this I combined reading books aimed to teach beginners such as Macromedia Flash 8 for Dummies (Ellen Finkelstein and Gurdy Leete, 2006) and online sources such as www.learnflash.com . To generate voice narration, another program was used that allowed editing and splicing of audio tracks. This was then split up into a number of narrated sections and added to the animation. Method Script To produce the tutorial the first stage was to construct a script for narration. This involved outlining the areas to be covered. The main headings used were: Stroke definition This gave a clinical definition and a lay person recognition mnemonic called FAST which is used to help members of the general public recognise stroke. Pathophysiology This covered blood supply to the brain. This combined diagrams of the circle of Willis, with images of the brain. Arterial blood supply were then displayed over the brain images while relating this to the arterial vessels leaving the circle of Willis Classification Students at Bristol university are asked to understand the Oxford / Bamford classification. This was covered in detail with explanations of clinical signs that may be seen and graphical representation of these. Prevalence This section covered prevalence, national impact and cost of stroke in the UK. Management In this section management was split up it to immediate management, medical management, in hospital care and some of the procedures considered for different cases. Risk factors for stroke and research into this was also written up and narrated. However at a later stage this was not included due to time constraints and video length. Narration An audio narration was generated using software called ‘Garage Band’ which allows audio tracks to be recorded and edited. The narration was exported in 45 sections so that this could then be added to the animation at relevant points. Animation The animation was made using Adobe Flash. This software is used for making websites and animations used for Internet adverts. It has the facility to export as a ‘flash video format’, which can then be played using a media player online. This software generates animation by allowing objects to be drawn on a stage and moved around using command lines and tools. This was used as it has the ability to animate objects and add audio narration. It also is designed for exporting animations to the Internet allowing the material to be accessed by a large number of people. Feedback A short questionnaire was generated which consisted of ten questions and placed online using a survey collection website (www.surveymonkey.com). Students were directed to the feedback questionnaire and allowed to submit this anonymously. Adapting the tutorial Some feedback constructively suggested changes that could be made. The video was updated after some concern about the speed of narration and that some of the narrative sections seemed to overlap. Analysis and Report The results of the feedback were then collected and displayed in a table. This was then added to the report and discussed with reference to research and previous project work. Results Students were allowed to access to the video animation through the Internet. After uploading the video an email was sent to students studying COMP2 at Bristol University. These students are required to know about aspects of stroke covered in this tutorial to pass this section of the course. The email notified them of the options to view the tutorial and how to give feedback. In total 30 students completed the feedback questionnaire and out of these 4 students provided optional written feedback. The results to the questions given were generally very positive. The majority of students showed a strong preference to video animations as a useful tool in medical education. The results are displayed in Table 1 below. TABLE 1 shows the ten question asked of the students and to what extent they agreed with each statement. Results are given in the percentage of students who chose the relevant category. Written Feedback Four written comments were made: "Really useful presentation!! Would be much better if someone proof read the whole thing as there are some spelling mistakes; also if the pauses between facts were longer it would be more easier to take in some facts. Overall, really nicely done!!" "Some of speech went too quickly, but good overall" "Very clearly written with excellent use of images to match the text and commentary!" "The Video was excellent." Discussion Student attitudes to this video tutorial were very positive. This was in contrast to the attitudes previously shown in the audio tutorial project (Buick, 2007) where video tutorials were not thought to be a useful resource. These results support recent developments in the generation of online video training for doctors by the Department of Health and previous research by Balsley et al (2005). Question one showed that the majority of students strongly agreed that the stroke video would be a useful resource. Questions two, three and four aimed to establish what aspects of a disease were best outlined using a video animation. Results showed that students agree or strongly agreed that defining the condition, pathophysiology and management were all well explained in this format. Interestingly, a large majority of students (70%) felt pathophysiology was best represented kinaesthetically. This may be due to the visual aspect that can be associated with pathophysiology. Disease processes are often represented using diagrams in textbooks with text explaining the disease process. Using computer technology it is possible to turn the text into audio narration and allow the user to view dynamic diagrams. In this way, students can better conceptualise the disease process, facilitating a more complete understanding of disease and its clinical manifestations. Question five aimed to highlight the benefit of visual stimulation as well as audio narration as a positive learning method. All students agreed or strongly agreed that the combination of these two aspects was beneficial. Question six showed a very strong response from students wanting access to more video tutorials, with 70% of students strongly agreeing to this statement. It is often the case that students take part in generating teaching material, and some students may be concerned that this material is inaccurate. However, many students do not think that this is a significant problem. This is reflected by the spread of student’s opinion seen in question 7, where there was no clear consensus of opinion. It may be that as students learn from a number of different resources, that any inaccuracies will be revealed and perhaps stimulate a better understanding through the process of verifying correct answers and practicing evidence based medicine. Question nine and ten show that most students value resources that allow sharing of educational material and feel they could help others learn. They would also value the option to feedback on this material. The written feedback showed positive responses from students. However there was feedback on some aspects of the video that they felt could be changed. The narration was delivered quickly with few gaps between statements to keep the tutorial short and concise, however this was thought to be distracting and made it less easy to follow. Following this feedback the narration was changed and placed back on the Internet for others to review. Further research and investigation could include the generation of a larger resource of video animations. My research has suggested that using animation to cover pathophysiology may be most beneficial. The software used to make this video also allows for the incorporation of interactive elements. The video produced in this project or other videos could have online menus, allowing users to select which part of the tutorial they wish to view rather than having to watch the whole animation, or they include interactive questions. Reflections Strength and weaknesses Strengths of this project include its unique approach to medical education. There have been few animated videos produced for undergraduate medical students that use this advanced software. This software is used by professional web developers but can be used effectively by students and doctors for educational purposes to produce video animation and interactive tutorials. For these reasons, I passionately believe that this technology could be used to revolutionise the way students learn medicine. If done effectively this could provide a more cost effective and engaging learning experience. This will ultimately benefit patients and doctors alike. This material can be place online allowing remote access. This is increasingly important for medical students studying on placements who are often learning away from the university setting. Weaknesses of this project include that of the work intensity of generating animated video. It is estimated that it takes around 6 to 9 hours to produce a minute of animated video. This does not include the research and recording of narration. The total sum of time to generate material and the additional skills needed to use the software makes generation of larger numbers of videos not possible by a small community of learners such as a university. Although it was done in this case, it is difficult to edit the material after it has been created. This may mean that material will become inaccurate when new advances occur. The feedback sample collected was opportunistic and the response rate was low. These factors may bias the results as only a subsection of opinions may have been obtained. These opinions may not be representative of the population studied or generalisable to them. It was difficult obtaining a professional medical opinion about the video in the time that I was allocated. However this has been organised for a later time. Knowledge and skills gained During this project I was able to learn about stroke its presentation, classification, management and risk factors. I read texts, which summarised stroke and research into risk factors and management of stroke. The challenge of usefully condensing a subject into a short educational tutorial was a challenging one. I feel I improved my skills of summarising information effectively. I gained knowledge of some of the challenges of undertaking a project such as this. One of the largest challenges included how long it took to produce the animation. In the future I will be aware of these difficulties and allow for time to gather information and generate the material. I also learnt the benefit of gaining feedback and allowing for adaption to this. It took more time to respond to feedback but this resulted in a better product that other students can use. I also reflected on the impact of stroke itself. Stroke has a major impact on patients, health care and carers. Much can be done in the recognition classification and management. A better understanding benefits all areas and I have gained a better knowledge and the importance of helping others gain a good understanding of stroke. I learned how to generate a video animation for the use of teaching in medicine and combine this with audio presentation. I learned how long it can take to generate material like this and the skill of organising my time effectively to manage a project. I can use this skill in the future to produce more educational material to help teach during my medical career. I also gained skills in learning how to place material on the Internet for others to access and will also use this in the future. Conclusions Previously evidence has shown the use of videos in medical education to be beneficial. It has normally been used to demonstrate clinical examination and procedures this study suggest there is a place for explanation of pathophysiology and disease summaries. However, there has been little research in to its use for graphically representing condition summaries. Computer technology now allows people to generate animation on their personal computer. It is possible that over time more students and doctors will start producing innovative visual and audio teaching material. This project indicates that this would be well received by students. References Planning the Medical Workforce: Medical Workforce Standing Advisory Committee: Third Report December. 1997 Page 40. The GNU project launched in 1984. Balslev T, de Grave W S, Muijtjens A M and Scherpbier A J (2005) Comparison of text and video cases in a postgraduate problem-based learning format Medical Education; 39: 1086–1092 Buick (2007) Year 3 External SSC. Bristol University Medical School. Spickard A, Smithers J, Cordray D, Gigante J, Wofford J L. (2004) A randomised trial of an online lecture with and without audio; Medical Education 38 (7), 787–790. Hudson J. N., (2004) Computer-aided learning in the real world of medical education: does the quality of interaction with the computer affect student learning? Medical Education 38 (8), 887–895. Ellen Finkelstein and Gurdy Leete, (2006) Macromedia Flash 8 for Dummies. Wiley publishing Inc. ISBN 0764596918
Dr Alastair Buick
about 10 years ago
Does the NHS really need saving? Your first question may be ‘does the NHS really need saving?’, and I would have to answer with an emphatic ‘Yes’. April this year sees the official start of Clinical Commissioning Groups (CCGs), the key component of The Health and Social Care Act, one of the biggest changes the NHS has seen. Amongst other things these organisations are tasked with saving the NHS £20 billion in the next 3 years by means of ‘efficiency changes’, despite the Institute of Fiscal Studies saying that the NHS needs to be spending £20 billion more each year by 2020. A daunting task but even more so in the light of the recently published Francis Report, where failings at Stafford Hospital have highlighted the need for compassionate patient care to be at the centre of all decisions. All of this has to be achieved in the largest publically funded health service in the world, which employs 1.7 million staff and serves more than 62 million people, with an annual budget of £106 billion (2011/12). So is it the solution? Clearly technology cannot be the only solution to this problem but I believe technology is pivotal in achieving the ‘efficiency changes’ desired. This might be direct use of technology to improve efficiency or may indirectly provide the intelligence that can drive non-technology based efficiencies; and if technology can be used to save clinicians time this can be reinvested into improving patient care. The NHS already has or is working on a number of national scale IT projects that could bring efficiency savings such as choose and book, electronic prescription service and map of medicine to name but a few. Newer and more localised projects include telehealth, clinical decision tools, remote working, the use of social media and real time patient data analysis. Yet many of these ideas, though new to the NHS, have been employed in business for many years. The NHS needs to catch up and then to further innovate. We need clinicians, managers and IT developers to work together if we are to be successful. Such change is not without its challenges and the size and complexity of the NHS makes implementation of change difficult. Patient safety and confidentiality has to be paramount but these create practical and technical barriers to development. I have just completed Connecting for Health’s Clinical Safety Training and there are some formidable hurdles to development and implementation of new IT systems in the NHS (ISB0129 and ISB0160). Procurement in the NHS is a beast of its own that I wouldn’t claim to understand but the processes are complex potentially making it difficult for small developers. The necessity of financial savings means the best solutions are not always chosen, even though that can be false economy in the long run. Yet we must not let these barriers stop us from seeking to employ technology for the good of clinicians and patients. We must not let them stifle innovation or be frustrated by what can be a slow process at times. The NHS recognises some of these issues and is working to try to help small businesses negotiate these obstacles. I hope in a series of posts in coming months to look in more detail at some of the technologies currently being used in the NHS, as well as emerging projects, and the opportunities and problems that surround them. I may stray occasionally into statistics or politics if you can cope with that! I am a practicing clinician with fingers in many pies so the frequency of my postings is likely to be inversely proportional to the workload I face! Comments are always welcome but I may not always reply in a timely manner.
Dr Damian Williams
almost 7 years ago
Dr Danielle Reddi is a Pain Research Fellow and Speciality Registrar in Anaesthesia at University College London Hospital, London, NW1 2BU, Dr Natasha Curran is Consultant in Pain and Anaesthesia, UCLH and Dr Robert Stephens is Consultant in Anaesthesia, UCLH.
over 4 years ago
Children's palliative care in Wales needs more "strategic attention" by ministers and the NHS, a new report says.
over 4 years ago
The organisation said it was "the right thing to do to defend the current and next generations of junior doctors"...
over 4 years ago
Cranial Nerve 1- Olfaction This patient has difficulty identifying the smells presented. Loss of smell is anosmia. The most common cause is a cold (as in this patient) or nasal allergies. Other causes include trauma or a meningioma affecting the olfactory tracts. Anosmia is also seen in Kallman syndrome because of agenesis of the olfactory bulbs. Cranial Nerve 2- Visual acuity This patientâs visual acuity is being tested with a Rosenbaum chart. First the left eye is tested, then the right eye. He is tested with his glasses on so this represents corrected visual acuity. He has 20/70 vision in the left eye and 20/40 in the right. His decreased visual acuity is from optic nerve damage. Cranial Nerve II- Visual field The patient's visual fields are being tested with gross confrontation. A right sided visual field deficit for both eyes is shown. This is a right hemianopia from a lesion behind the optic chiasm involving the left optic tract, radiation or striate cortex. Cranial Nerve II- Fundoscopy The first photograph is of a fundus showing papilledema. The findings of papilledema include 1. Loss of venous pulsation 2. Swelling of the optic nerve head so there is loss of the disc margin 3. Venous engorgement 4. Disc hyperemi 5. Loss of the physiologic cup an 6. Flame shaped hemorrhages. This photograph shows all the signs except the hemorrhages and loss of venous pulsations. The second photograph shows optic atrophy, which is pallor of the optic disc resulting form damage to the optic nerve from pressure, ischemia, or demyelination. Images Courtesy Dr. Kathleen Digre, University of Uta Cranial Nerves 2 & 3- Pupillary Light Refle The swinging flashlight test is used to show a relative afferent pupillary defect or a Marcus Gunn pupil of the left eye. The left eye has perceived less light stimulus (a defect in the sensory or afferent pathway) then the opposite eye so the pupil dilates with the same light stimulus that caused constriction when the normal eye was stimulated. Video Courtesy of Dr.Daniel Jacobson, Marshfield Clini and Dr. Kathleen Digre, University of Uta Cranial Nerves 3, 4 & 6- Inspection & Ocular Alignmen This patient with ocular myasthenia gravis has bilateral ptosis, left greater than right. There is also ocular misalignment because of weakness of the eye muscles especially of the left eye. Note the reflection of the light source doesn't fall on the same location of each eyeball. Video Courtesy of Dr.Daniel Jacobson, Marshfield Clini and Dr. Kathleen Digre, University of Uta Cranial Nerves 3, 4 & 6- Versions • The first patient shown has incomplete abduction of her left eye from a 6th nerve palsy. • The second patient has a left 3rd nerve palsy resulting in ptosis, dilated pupil, limited adduction, elevation, and depression of the left eye. Second Video Courtesy of Dr.Daniel Jacobson, Marshfield Clini and Dr. Kathleen Digre, University of Uta Cranial Nerves 3, 4 & 6- Duction Each eye is examined with the other covered (this is called ductions). The patient is unable to adduct either the left or the right eye. If you watch closely you can see nystagmus upon abduction of each eye. When both eyes are tested together (testing versions) you can see the bilateral adduction defect with nystagmus of the abducting eye. This is bilateral internuclear ophthalmoplegia often caused by a demyelinating lesion effecting the MLF bilaterally. The adduction defect occurs because there is disruption of the MLF (internuclear) connections between the abducens nucleus and the lower motor neurons in the oculomotor nucleus that innervate the medial rectus muscle. Saccades Smooth Pursui The patient shown has progressive supranuclear palsy. As part of this disease there is disruption of fixation by square wave jerks and impairment of smooth pursuit movements. Saccadic eye movements are also impaired. Although not shown in this video, vertical saccadic eye movements are usually the initial deficit in this disorder. Video Courtesy of Dr.Daniel Jacobson, Marshfield Clini and Dr. Kathleen Digre, University of Utah Optokinetic Nystagmu This patient has poor optokinetic nystagmus when the tape is moved to the right or left. The patient lacks the input from the parietal-occipital gaze centers to initiate smooth pursuit movements therefore her visual tracking of the objects on the tape is inconsistent and erratic. Patients who have a lesion of the parietal-occipital gaze center will have absent optokinetic nystagmus when the tape is moved toward the side of the lesion. Vestibulo-ocular refle The vestibulo-ocular reflex should be present in a comatose patient with intact brainstem function. This is called intact "Doll’s eyes" because in the old fashion dolls the eyes were weighted with lead so when the head was turned one way the eyes turned in the opposite direction. Absent "Doll’s eyes" or vestibulo-ocular reflex indicates brainstem dysfunction at the midbrain-pontine level. Vergenc Light-near dissociation occurs when the pupils don't react to light but constrict with convergence as part of the near reflex. This is what happens in the Argyll-Robertson pupil (usually seen with neurosyphilis) where there is a pretectal lesion affecting the retinomesencephalic afferents controlling the light reflex but sparing the occipitomesencephalic pathways for the near reflex. Video Courtesy of Dr.Daniel Jacobson, Marshfield Clini and Dr. Kathleen Digre, University of Uta Cranial Nerve 5- Sensor There is a sensory deficit for both light touch and pain on the left side of the face for all divisions of the 5th nerve. Note that the deficit is first recognized just to the left of the midline and not exactly at the midline. Patients with psychogenic sensory loss often identify the sensory change as beginning right at the midline. Cranial Nerves 5 & 7 - Corneal refle A patient with an absent corneal reflex either has a CN 5 sensory deficit or a CN 7 motor deficit. The corneal reflex is particularly helpful in assessing brainstem function in the unconscious patient. An absent corneal reflex in this setting would indicate brainstem dysfunction. Cranial Nerve 5- Motor • The first patient shown has weakness of the pterygoids and the jaw deviates towards the side of the weakness. • The second patient shown has a positive jaw jerk which indicates an upper motor lesion affecting the 5th cranial nerve. First Video Courtesy of Alejandro Stern, Stern Foundation Cranial Nerve 7- Motor • The first patient has weakness of all the muscles of facial expression on the right side of the face indicating a lesion of the facial nucleus or the peripheral 7th nerve. • The second patient has weakness of the lower half of his left face including the orbicularis oculi muscle but sparing the forehead. This is consistent with a central 7th or upper motor neuron lesion. Video Courtesy of Alejandro Stern, Stern Foundatio Cranial Nerve 7- Sensory, Tast The patient has difficulty correctly identifying taste on the right side of the tongue indicating a lesion of the sensory limb of the 7th nerve. Cranial Nerve 8- Auditory Acuity, Weber & Rinne Test This patient has decreased hearing acuity of the right ear. The Weber test lateralizes to the right ear and bone conduction is greater than air conduction on the right. He has a conductive hearing loss. Cranial Nerve 8- Vestibula Patients with vestibular disease typically complain of vertigo – the illusion of a spinning movement. Nystagmus is the principle finding in vestibular disease. It is horizontal and torsional with the slow phase of the nystagmus toward the abnormal side in peripheral vestibular nerve disease. Visual fixation can suppress the nystagmus. In central causes of vertigo (located in the brainstem) the nystagmus can be horizontal, upbeat, downbeat, or torsional and is not suppressed by visual fixation. Cranial Nerve 9 & 10- Moto When the patient says "ah" there is excessive nasal air escape. The palate elevates more on the left side and the uvula deviates toward the left side because the right side is weak. This patient has a deficit of the right 9th & 10th cranial nerves. Video Courtesy of Alejandro Stern, Stern Foundatio Cranial Nerve 9 & 10- Sensory and Motor: Gag Refle Using a tongue blade, the left side of the patient's palate is touched which results in a gag reflex with the left side of the palate elevating more then the right and the uvula deviating to the left consistent with a right CN 9 & 10 deficit. Video Courtesy of Alejandro Stern, Stern Foundation Cranial Nerve 11- Moto When the patient contracts the muscles of the neck the left sternocleidomastoid muscle is easily seen but the right is absent. Looking at the back of the patient, the left trapezius muscle is outlined and present but the right is atrophic and hard to identify. These findings indicate a lesion of the right 11th cranial nerve. Video Courtesy of Alejandro Stern, Stern Foundation Cranial Nerve 12- Moto Notice the atrophy and fasciculation of the right side of this patient's tongue. The tongue deviates to the right as well because of weakness of the right intrinsic tongue muscles. These findings are present because of a lesion of the right 12th cranial nerve.
almost 9 years ago