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Gowning training: the use of video recording together with microbial assessment.

Following classroom training on proper aseptic gowning technique, clean room operators were filmed while gowning according to standard procedure. Subsequently, the exterior surface of each operator's gown was monitored for microbial contamination. Operators reviewed their personal videotaping with the trainer. Through careful and critical self-observation, the operator's ability to follow the gowning procedure in addition to using good gowning technique was ascertained. Furthermore, the operator's gowning technique was compared with the results of the microbiological monitoring data. A correlation between microbial contamination of the gown surface and improper technique was demonstrated. This correlation enhanced the operator's awareness of the consequences of improper gowning technique. Use of video replay enabled the operator and trainer to identify improper or subtle flaws in technique detected through microbial monitoring but undetected during actual gowning. This training program served to further emphasize the importance of using proper aseptic gowning technique. Clean room operators are more involved in maintaining clean room integrity and their awareness of the potential for contaminating the area by inadequate technique has been enhanced.

Asepsis↗

Ladder beam and camera video recording system for evaluating forelimb and hindlimb deficits after sensorimotor cortex injury in rats.

Hindlimb and forelimb deficits in rats caused by sensorimotor cortex lesions are frequently tested by using the narrow flat beam (hindlimb), the narrow pegged beam (hindlimb and forelimb) or the grid-walking (forelimb) tests. Although these are excellent tests, the narrow flat beam generates non-parametric data so that using more powerful parametric statistical analyses are prohibited. All these tests can be difficult to score if the rat is moving rapidly. Foot misplacements, especially on the grid-walking test, are indicative of an ongoing deficit, but have not been reliably and accurately described and quantified previously. In this paper we present an easy to construct and use horizontal ladder-beam with a camera system on rails which can be used to evaluate both hindlimb and forelimb deficits in a single test. By slow motion videotape playback we were able to quantify and demonstrate foot misplacements which go beyond the recovery period usually seen using more conventional measures (i.e. footslips and footfaults). This convenient system provides a rapid and reliable method for recording and evaluating rat performance on any type of beam and may be useful for measuring sensorimotor recovery following brain injury.

Animals↗

Changes in oral functions and posture at rest following surgical orthodontic treatment and myofunctional therapy. Evaluation by means of video recording.

Fifteen adult patients with skeletal mandibular prognathism or openbite underwent surgical and orthodontic treatment, then received myofunctional therapy. Cephalograms, facial photographs and oral models were taken on each patient. Patients were then videotaped, frontally and laterally. Observations were made of forty different oral behaviors and oral rest posture. Changes in morphology, speech, and swallowing are described and evaluated.

Adult↗

Problems in the use of video recordings in training for psychotherapy.

In Britain, personnel of the state psychiatric service provide many forms of psychotherapy, to very many people. To train psychologists, psychiatrists and other professionals is therefore a large-scale task. To simplify and economize on this task, teaching methods are sought which attempt to provide the trainee with models of behaviour (towards the patient) which are efficacious. This paper offers a discussion of some theoretical and practical problems involved in this approach, which may affect both the therapeutic task and the development of the therapist.

Curriculum↗

Video recording feedback: a feasible and effective approach to teaching history-taking and physical examination skills in undergraduate paediatric medicine.

Medical educators have always recognized the need to teach and train medical graduates and undergraduates the skills of conducting a consultation. Several authors have established the efficacy of using constructive feedback on videotape of each student's interaction with a patient to teach and enhance such skills. This study reports 'students' perceptions' of the feedback process used in the Junior Paediatric Clerkship at the Faculty of Medicine of the United Arab Emirates University. An unexpected 73% of the respondents believed that self-observation influenced development of their clinical skills. More than 80% said that the feedback from instructors and peers helped them to improve their clinical skills, but they would have liked to have more than one of their consultations recorded and reviewed. It was found that 75% of the students felt that self-critique of their performance made them aware of their strengths and weaknesses and their skills in analysing and evaluating consultations had been enhanced. It was found from Kruskal Wallis one-way ANOVA that the students' professional attitude, empathy, and warmth towards the patients differed highly significantly (P = 0.0062, 0.0089, 0.0007, respectively) from self-assurance, self-confidence and competence. They were also deficient in certain areas of history-taking, interviewing skills, and physical examination techniques and perceived they needed more training in order to be proficient.

Clinical Competence↗

Epiglottic motion: video recording of muscular dysfunction.

Progression of epiglottic movement was demonstrated on video tape during a pharyngeal swallow in 618 patients. Dysfunction of extrinsic laryngeal musculature and restriction of normal epiglottic motion produced the most significant changes. Intrinsic muscular dysfunction creates minor abnormalities in epiglottic motion but may lead to laryngotracheal aspiration. Alterations in normal movement should be recognized as such and significant neuromuscular and malignant disease considered.

Epiglottis↗

Spontaneous awakenings in preterm and term infants assessed throughout 24-h video-recordings.

The study aimed to evaluate the development of awakenings during preterm and term age in 12 low-risk infants observed between 33 and 40 weeks of post-conceptional age. Waking was been detected through the analysis of body motility. Gross generalized body movements with prolonged startles, marked stretching and writhing was considered as waking, whereas vigorous, forceful abrupt body movements with high frequency tremor sometimes superimposed upon movements were considered as corresponding to crying. Total number of awakenings in the 24 h does not show significant changes with age, whereas the mean duration increases significantly, which is accounted for mainly by those awakenings starting with crying, in particular, during the day. These data suggest a developmental gap between the ability to sustain the waking state, which already starts to increase before term age, and the ability to maintain prolonged sleep episodes, which has been shown to develop later. Furthermore, the developmental difference between awakenings starting with crying and awakenings starting with wakefulness suggests that two kinds of awakenings might be modulated by different factors.

Child Development↗

[Dynamic radiologic study with video recording of the oral and pharyngeal stages of normal deglutition].

The upsurge of interest in dynamic radiology of the oral pharyngeal phases of deglutition can be explained by: (a) the increased survival-rate in neuromuscular diseases; (b) the improved results in head and neck surgery and radiotherapy; (c) the awareness of the existence of a "silent" form of dysphagia. This paper is aimed at divulgating the radiological dynamic investigation of deglutition by videorecording, and at assessing the findings of a study on 119 consecutive non-dysphagic patients (55 males and 64 females; mean age 54 years) as a control group for future studies on dysphagic patients. Seventy-nine out of 119 subjects (66.4%) were found to be normal. Various abnormalities were observed in the remaining 40 (33.6%), such as barium penetration in the subepiglottic or supraglottic space (20 cases), dysmotility of the epiglottis (14 cases), transient and mild cricopharyngeal muscle dysfunction (17 cases), diverticula (6 cases). Further studies are needed to evaluate the true significance and implication of these findings in asymptomatic patients. Finally, a more widespread use of this method is hoped for, in order to establish its diagnostic and clinical efficacy.

Administration, Oral↗

Individual cell motility studied by time-lapse video recording: influence of experimental conditions.

BACKGROUND: Eukaryotic cell motility plays a key role during development, wound healing, and tumour invasion. Computer-assisted image analysis now makes it a realistic task to quantify individual cell motility of a large number of cells. However, the influence of culture conditions before and during measurements has not been investigated systematically. METHODS: We have evaluated intraassay and interassay variations in determinations of cellular speed of fibroblastoid L929 cells and investigated the effects of a series of physical and biological parameters on the motile behavior of this cell line. Cellular morphology and organization of filamentous actin were assessed by means of phase-contrast and confocal laser scanning microscopy and compared to the corresponding motility data. RESULTS: Cell dissociation procedure, seeding density, time of cultivation, and substrate concentration were shown to affect cellular speed significantly. pH and temperature of the medium most profoundly influenced cell motility and morphology. Thus, the mean cell speed was 40% lower at pH 7.25 than at pH 7.6; at 29 degrees C, it was approximately four times lower than at 39 degrees C. CONCLUSION: Of the parameters evaluated, cell motility was most strongly affected by changes in pH and temperature. In general, changes in cell speed were accompanied by alterations in cell morphology and organization of filamentous actin, although no consistent phenotypic characteristics could be demonstrated for cells exhibiting high cell speed.

Actins↗

Time lapse video recordings of highly purified human hematopoietic progenitor cells in culture.

Major hurdles in studies of stem cell biology include the low frequency and heterogeneity of human hematopoietic precursor cells in bone marrow and the difficulty of directly studying the effect of various culture conditions and growth factors on such cells. We have adapted the cell analyzer imaging system for monitoring and recording the morphology of limited numbers of cells under various culture conditions. Hematopoietic progenitor cells with a CD34+ CD45RAlo CD71lo phenotype were purified from previously frozen organ donor bone marrow by fluorescence activated cell sorting. Cultures of such cells were analyzed with the imaging system composed of an inverted microscope contained in an incubator, a video camera, an optical memory disk recorder and a computer-controlled motorized microscope XYZ precision stage. Fully computer-controlled video images at defined XYZ positions were captured at selected time intervals and recorded at a predetermined sequence on an optical memory disk. In this study, the cell analyzer system was used to obtain descriptions and measurements of hematopoietic cell behavior, like cell motility, cell interactions, cell shape, cell division, cell cycle time and cell size changes under different culture conditions.

Cell Communication↗

Covert video recordings of life-threatening child abuse: lessons for child protection.

OBJECTIVE: To describe historic markers and clinical observations of life-threatening child abuse as diagnosed using covert video surveillance (CVS). DESIGN: A descriptive, retrospective, partially controlled case study. SETTING: Two hospitals (in London and North Staffordshire, UK) receiving referrals for the investigation of apparent life-threatening events (ALTE), with the availability of CVS. PATIENTS: A total of 39 children (age range at CVS, 2 to 44 months; median, 9 months) in whom hospital CVS was used to investigate suspicions of induced illness. Thirty-six were referred for investigation of ALTE, one with suspected epilepsy, one with failure to thrive, and one with suspected strangulation. A control group consisted of 46 children with recurrent ALTE proven on physiologic recordings to be attributable to a natural medical cause (9 attributable to epileptic seizures, and 37 attributable to respiratory problems). INTERVENTION: Collection of historic details from medical, social service, and police records; interagency collaboration in planning, investigations, and management; development and use of CVS as a clinical tool in the investigation of patients in whom there was suspicion of induced illness. OUTCOME: Confirmation of attempted suffocation or other child abuse from CVS. RESULTS: CVS revealed abuse in 33 of 39 suspected cases, with documentation of intentional suffocation observed in 30 patients. Poisonings (with disinfectant or anticonvulsant), a deliberate fracture, and other emotional and physical abuse were also identified under surveillance. The first ALTE occurred at a median age corrected for the expected date of delivery of 3.6 months in the CVS patients and of 0.3 months in controls. Three CVS patients and 27 of the control children (including 20 at <32 weeks' gestation) were born prematurely. Bleeding from the nose and/or mouth was reported in 11 of the 38 patients with ALTE undergoing CVS but in none of the 46 controls. Four patients who had been subjected to recurrent suffocation before CVS had permanent neurologic deficits and/or required anticonvulsant therapy for epileptic seizures resulting from hypoxic cerebral injury. The 39 patients undergoing CVS had 41 siblings, 12 of whom had previously died suddenly and unexpectedly. Eleven of the deaths had been classified as sudden infant death syndrome but after CVS, four parents admitted to suffocating eight of these siblings. One additional sibling who had died suddenly with rotavirus gastroenteritis was reinvestigated after CVS of her sister revealed poisoning, and death was found to be caused by deliberate salt poisoning. Other signs of abuse were documented in the medical, social, and police records of an additional 15 of the siblings. In the 52 siblings of the 46 controls, 2 had died: one from hypoplastic left heart at 5 days and the other suddenly and unexpectedly (classified as sudden infant death syndrome) at 7 weeks. Twenty-three of the abusive parents were diagnosed by a psychiatrist as having personality disorders. CONCLUSIONS: Induced illness is a severe form of abuse that may cause death or permanent neurologic impairment. It may be accompanied by other severe forms of abuse, may result in behavioral disorders, and may be accompanied by immeasurable suffering. Detection of this abuse requires careful history-taking; thorough examination of the health, social, and police records; and close and focused collaboration between hospital and community child health professionals, child psychiatrists, social workers, and police officers. CVS may help investigate suspicions and ensure that children are protected from additional abuse. When parents have failed to acknowledge that they have deceived health professionals, partnership with them in seeking to protect their children may be neither safe nor effective.

Asphyxia↗

Coronary arteriography for quantitative analysis: experimental and clinical comparison of cinefilm and video recordings.

Although use of videotape for the recording of coronary angiograms continues to grow, the validity of quantitative coronary angiographic analysis of video images remains unknown. To estimate the reliability of angiographic images recorded on videotape, experimental and clinical angiograms were recorded simultaneously on both 35 mm cinefilm and super-VHS videotape with normal images and with spatial filtering of the images (edge enhancement) on a digital cardiac imaging system. The experimental angiographic studies were performed with plexiglass blocks and stenosis phantom of 0.5 to 3.0 mm in diameter. The clinical angiograms were recorded in 20 patients undergoing percutaneous transluminal coronary angioplasty (31 frames before and 20 frames after percutaneous transluminal coronary angioplasty). The cinefilm and corresponding videotapes were analyzed off-line with the new version of the coronary angiography analysis system. For the experimental study, measurements of minimal luminal diameter obtained from cinefilm, normal-image videotape, and edge-enhanced videotape were compared with the true phantom diameter. In the clinical study the agreement between measurements obtained from cinefilm and measurements from normal-image videotape and edge-enhanced videotape was examined. In the phantom series the accuracy and precision of quantitative coronary angiography measurement for cinefilm were -0.10 +/- 0.08 mm, for normal-image videotape -0.11 +/- 0.18 mm, and for edge-enhanced videotape -0.10 +/- 0.11 mm (mean +/- SD). In the clinical series, the differences between measurements from cinefilm and normal-image videotape were 0.14 +/- 0.20 mm and from cinefilm and edge-enhanced videotape 0.04 +/- 0.13 mm.(ABSTRACT TRUNCATED AT 250 WORDS)

Angioplasty, Balloon, Coronary↗

[Video recording after visualization of conjunctival lymph vessels].

AIM: The aim of the investigation is a combination of a harmless and easy method of visualisation with a suitable way or recording of the dynamic processes of flow of dye in the lymphatic vessels of the conjunctiva in human eyes in vivo. METHOD: A visualisation method of injecting subconjunctivally 0.10 ml of a 2.5% solution of Patentblau V, was employed to study the initial lymphatic vessels (LV) of conjunctiva. The penetration of the dye in the LV was observed through an operating microscope and was filmed with the video camera attached. The anatomy of the initial LV of the conjunctiva, their size, the speed of lymph flow and the time necessary for the diffusion of the dye through the LV walls were recorded. PATIENTS AND RESULTS: The method was applied to 16 patients suffering from various ophthalmologic and general disorders. Well-shaped lymph vessels in the conjunctiva are located circularly around the limbus, at a distance of 3-5 mm. These LV often resemble rosaries consisting of separate segments (lymphangions). The lymph flow varies in speed. When the valves shut completely, the speed of the lymph flow in the respective lymphangion equals 0, but when the valves open, the lymph may gradually or rapidly stream into the next lymphangion. The LV vary greatly in size, which depends mainly on the quantity of liquid that has penetrated inside them. CONCLUSION: The time necessary for the dye to diffuse through the LV walls also varies greatly and depends on the type and dynamics of the disorder of the anterior eye segment, as well as on the general vascular disorders of individual patients and their effect on the permeability of the LV walls.

Adult↗

Technological state of the art, possibilities and trends in urologic-endoscopic color photo, film and video recording techniques.

Endoscopic color photo-documentation has attained a high standard of sophistication through pioneering new technical developments and advances. Nearly all the cavities in the human body can be endoscopically explored by expediently combining appropriate equipment. Suitable endo-instruments for photography, film, and color video are discussed here on the basis of extensive experience at the German Diagnostic Clinic in Wiesbaden. The trand is clearly toward modern methods of magnetic tape recording employing compatible systems. A bright future is predicted for the color video process in medicine, especially in endoscopy.

Color↗

Dinner music for demented patients: analysis of video-recorded observations.

At a nursing home ward for demented patients, selections of dinner music were played during three periods of 2 weeks. At the end of the study was a control period. The reactions of five patients to three different types of music were registered by video observations. This study showed that the patients were affected by music, particularly soothing music. For example, it was found that when music was played one of the study's restless patients became unusually calm whereas another fed herself more than usual. The patients spent more time with dinner when music was played. Dinner music made the patients eat more calmly. Music as a nursing tool is an intervention that is simple to realize and worth trying. A tentative conclusion of this study is that music can beneficially affect restless and agitated demented patients.

Aged↗

Video recording in the assessment of violent incidents in psychiatric hospitals.

Research into causes and management of aggressive behavior in mental illness has been hampered by difficulties related to the accurate detection, description, and classification of aggression. Much aggressive behavior, particularly verbal aggression, is unreported or reported inaccurately. We describe the use of video surveillance to study aggression in psychiatric inpatients. The videos supplement or correct eyewitness accounts, accurately identifying aggressors and victims, as well as specific aggressive behaviors. Video has provided a tool for studying behavioral precursors and environmental catalysts of assaults. These observations have contributed to our efforts to create a typology of aggression based on underlying causes. Furthermore, video has played a direct role in clinical care, documenting or revealing medication side effects, as well as feigned or self-induced injuries. The ethical and responsible use of video surveillance of psychiatric inpatients has the potential to enhance our understanding and treatment of aggression.

Ethics, Medical↗

Analysis of video-recorded images to determine linear and angular dimensions in the growing horse.

Studies of growth and conformation require statistical methods that are not applicable to subjective conformation standards used by breeders and trainers. A new system was developed to provide an objective approach for both science and industry, based on analysis of video images to measure aspects of conformation that were represented by angles or lengths. A studio crush was developed in which video images of horses of different sizes were taken after bone protuberances, located by palpation, were marked with white paper stickers. Screen pixel coordinates of calibration marks, bone markers and points on horse outlines were digitised from captured images and corrected for aspect ratio and 'fish-eye' lens effects. Calculations from the corrected coordinates produced linear dimensions and angular dimensions useful for comparison of horses for conformation and experimental purposes. The precision achieved by the method in determining linear and angular dimensions was examined through systematically determining variance for isolated steps of the procedure. Angles of the front limbs viewed from in front were determined with a standard deviation of 2-5 degrees and effects of viewing angle were detectable statistically. The height of the rump and wither were determined with precision closely related to the limitations encountered in locating a point on a screen, which was greater for markers applied to the skin than for points at the edge of the image. Parameters determined from markers applied to the skin were, however, more variable (because their relation to bone position was affected by movement), but still provided a means by which a number of aspects of size and conformation can be determined objectively for many horses during growth. Sufficient precision was achieved to detect statistically relatively small effects on calculated parameters of camera height position.

Animals↗