The success of aneurysmectomy in abolishing recurrent ventricular tachycardia or ventricular fibrillation has not been clearly defined. Ten patients who underwent aneurysm resection to control ventricular arrhythmias were studied before and an average of 19 (4 to 42) months following operation. All patients had moderate to large aneurysms and four had asynergy in adjacent segments. Of four patients with significant stenosis in vessels not supplying the aneurysm, three had aortocoronary bypass grafts in addition to their resection. Ambulatory Holter monitoring and a graded exercise test were performed in all patients postoperatively. There was no operative mortality. Two patients who did not have associated revascularization procedures died suddenly 1.5 and 7 months postoperatively. Of the eight survivors, despite clinical improvement, the Holter ECG revealed runs of ventricular tachycardia in three patients and frequent multifocal ventricular extrasystoles in the other five patients. No correlation was found between recurrence of the ventricular arrhythmias and aneurysm size, contraction pattern of other myocardial segments, extent of coronary disease, or the presence of congestive heart failure. In conclusion, aneurysmectomy does not abolish ventricular tachyarrhythmias and probably should be reserved for patients who remain symptomatic despite an adequate medical trial. The persistence of complex arrhythmias following operation warrants a close follow-up in these patients. 相似文献
Weight reduction cycles are used by weight classed athletes in Taekwondo to make a weight category. Tension, dizziness, headaches, and confusion have been associated with rapid weight loss (RWL). There is a lack of research in weight cycling and its benefits among Taekwondo athletes.
Purpose
To investigate the rate of weight cycling in Junior Taekwondo athletes and its effect on performance.
Methods
Athletes were weighed prior to competition, then again before their first match. Body mass difference in relation to winning was compared.
Results
A significant increase from weigh-in to pre-match measurements was consistently found in both genders with no significant difference between them. Winners had a mean body mass gain (1.02 kg) which was non-significantly less than the non-winners (1.09 kg).
Conclusions
RWL practices do not define which athlete will perform better. Negative effects of weight cycling coupled with RWL has unclear performance benefits which indicates a need for further research. 相似文献
Objectives: Mixed martial arts (MMA) has witnessed a surge in popularity worldwide. This study explores the musculoskeletal and head injuries sustained in the professional fights of the Ultimate Fighting Championship (UFC), and establishes associations between injury profiles and impactful contributory factors.
Methods: The Nevada State Athletic Commission database was screened for ringside physician reports of UFC fights between January 2016 and July 2018. Information on the fighter’s gender, weight, injury, way of finish, and match result were collected. Injury rates were calculated and statistical analyses were conducted to determine significant associations among variables. P-values <0.05 were considered significant (95% CI).
Results: A total of 291 injuries were recorded in 285 fights from nine weight divisions. The overall injury rate was 51 per 100 athletic exposures (AE). Males predominantly partook in 249 matches (87%) and had higher injury rates (54 injuries per 100 AE) than females (30 injuries per 100 AE). Decision was the most common way a match ended. Knockouts (KOs) were significantly higher in males (36%) than in females (14%, P = 0.0007). Submissions were significantly higher in females (36%) than in males (16%, P = 0.001). Head injuries (67%) were the most common injuries reported with a rate of 34 per 100 AE. Upper limb injuries were significantly higher in females (40%) than in males (14%, P = 0.0003). Lower limb injuries were significantly higher in males (19%) than in females (5%, P = 0.01). Head injuries were significantly associated with KOs (P < 0.0001). Upper limb injuries (P = 0.032) and lower limb injuries (P = 0.034) were significantly associated with matches that ended with Decision. Trend-line analyses showed that as weight division increases, overall injury rates, head injuries, lower limb injuries, and KOs’ frequency increase, whereas upper limb injuries, Submission frequency, and Decision frequency decrease.
Conclusion: MMA has a high injury rate. Gender, way of finish, and weight play an important role in predicting fight outcomes and injury profiles. Injury prevention policies must be entertained to limit injury risk in MMA. 相似文献
In creating and performing music, musicians can experience health problems from the high physical and psychological demands of their profession. Musculoskeletal disorders related to playing are painful, chronic and disabling conditions which are prevalent among classical musicians. The widespread study of the prevalence, etiology, and management of playing-related musculoskeletal disorders (PRMDs) is a recent development known as performing arts medicine. Despite the rapid development of this new field, it is unclear how musicians identify themselves as injured, and how they make decisions about what, if anything, to do about these disabling injuries. The aims of our study were two-fold. First, we aimed to provide musicians with the opportunity to define a PRMD in their own words. Second, we sought to understand the subjective meaning of the PRMD experience to musicians. Two key informants identified 30 study participants in Ontario and Quebec, Canada. As a form of data triangulation, participants included 27 musicians and three health professionals. Data were collected in semi-structured interviews which lasted, on average, 40 min. Data were transcribed, and were manually coded and analyzed. Participants defined a PRMD as pain and other symptoms which are chronic, are beyond their control, and which interfere with their ability to play their instrument at their usual level. Participants distinguished between "normal", mild everyday aches and pains, and a PRMD. Although a PRMD is not a medically serious or life-threatening illness, it is devastating to musicians physically, emotionally, socially, and financially. The overall theme of suffering captures the meaning of these problems which threaten the identity of the musician. The findings of this study are consistent with other studies of the experience of work-related musculoskeletal disorders, and other illnesses. 相似文献
Humanism has appeared intermittently in the nursing literature as a concept that can be used in understanding nursing. I return to the concept in response to noticing the term appearing in the context of health humanities, where it is loosely associated both with humanities and being humane. I review the usage and critiques of humanism in both nursing and medical literature and then re‐evaluate what the idea of humanism might hold for nursing, trying to avoid the traps of an over‐determination of the human subject, or dichotomizing nursing as art or science, technology or caring. I draw on writings on humanism primarily from Emmanuel Levinas and Edward Said to emphasize strands in humanism of obligation towards others and of critical discernment within history and culture directed towards democratic practices. I discuss in passing the strong association in the UK particularly between humanism and scientism as a note of caution about the plurality of the term humanism. I conclude that humanism is a tradition that does offer productive ways of thinking about nursing with the proviso that it ought to be treated carefully as a problematic tradition and not as a new essence for nursing. 相似文献
Objectives: Effects of two mentally stimulating art interventions on processing speed and visuo-spatial cognition were compared in three samples.
Method: In a randomized 10-week art intervention study with a pre-post follow-up design, 113 adults (27 healthy older adults with subjective memory complaints, 50 healthy older adults and 36 healthy younger adults) were randomly assigned to one of two groups: visual art production or cognitive art evaluation, where the participants either produced or evaluated art. ANOVAs with repeated measures were computed to observe effects on the Symbol-Digit Test, and the Stick Test.
Results: Significant Time effects were found with regard to processing speed and visuo-spatial cognition. Additionally, there was found a significant Time × Sample interaction for processing speed. The effects proved robust after testing for education and adding sex as additional factor.
Conclusion: Mental stimulation by participation in art classes leads to an improvement of processing speed and visuo-spatial cognition. Further investigation is required to improve understanding of the potential impact of art intervention on cognitive abilities across adulthood. 相似文献
There is a very small body of literature addressing the use of the arts or art therapy in antenatal and postnatal care, and much of it is qualitative, including some rich and complex data which are worthy of discussion and consideration. Overall, it points to a promising use of supportive and therapeutic arts in this area. This article presents some background on the use of the arts specifically focusing on postnatal depression and birth trauma. It then moves on to present a brief survey of literature in the field, followed by some further reflections and discussion about further research needed to establish clinical utility and economic viability. 相似文献