Primary spontaneous pneumothorax in a recreational athlete

Primary spontaneous pneumothorax (PSP) is relatively uncommon in the athletic population. Because of the subtle nature of the symptoms, the diagnosis is easily missed, which can lead to unnecessary prolonged discomfort and recovery time for the athlete. ere is currently a lack of evidence in the literature concerning treatment and return-to-play protocols referring specically to PSP within the athletic community. is case report highlights the predisposing and important factors in the history of a 34-year-old recreational male athlete who developed PSP. According to the knowledge of the authors, this report of PSP in a recreational athlete is the rst of its kind described in South Africa. Owing to the possibility of life-threatening complications, it is important for sports physicians to be familiar with the important points in the history and to be made aware of the predisposing factors that may lead to PSP

The effects of body position on the distribution of obstructive, mixed and central sleep apnoea

BACKGROUND. Obstructive sleep apnoea is commonly aggravated by the supine body position. The impact of body position on the severity of mixed and central sleep apnoeas is understudied. OBJECTIVES. To evaluate the impact of body position on obstructive, mixed and central apnoea indices in subjects presenting with this triform of sleep apnoea during a single polysomnogram. METHODS. We retrospectively analysed 26 polysomnograms where obstructive, mixed and central apnoeas each occurred at a rate >5/hr. Comparisons between lateral and supine body positions were made for obstructive apnoea index (OAI), mixed apnoea index (MAI), central apnoea index (CAI), apnoea-hypopnoea index (AHI) and obstructive apnoea-hypopnoea index (OAHI). RESULTS. Mean (SD) apnoea indices were significantly lower in lateral v. supine positions, respectively: MAI 15.06 (18.34) v. 32.09 (17.05); p<0.001, CAI 11.82 (11.77) v. 23.82 (14.18); p<0.001, AHI 79.46 (31.17) v. 99.47 (26.33); p<0.001, OAHI 67.87 (28.25) v. 76.00 (23.21); p=0.039. Unexpectedly, the converse was seen for OAI when comparing the lateral v. supine position: 53.10 (30.64) v. 43.58 (25.83); p=0.009, respectively. CONCLUSION. It may be beneficial for subjects with a combination of obstructive, mixed, and central apnoeas to avoid the supine body position. In this triform phenotype, mixed apnoeas are neither purely obstructive nor purely centrally mediated. Furthermore, obstructive, mixed, and central apnoeas may be different representations of a single respiratory abnormality.First author, GC, funded the study.http://www.ajtccm.org.za/index.php/SARJam2020School of Health Systems and Public Health (SHSPH

Considerations for developing and implementing a safe list for alien taxa

Many species have been intentionally introduced to new regions for their benefits. Some of these alien species cause damage, others do not (or at least have not yet). There are several approaches to address this problem: prohibit taxa that will cause damage, try to limit damages while preserving benefits, or promote taxa that are safe. In the present article, we unpack the safe list approach, which we define as “a list of taxa alien to the region of interest that are considered of sufficiently low risk of invasion and impact that the taxa can be widely used without concerns of negative impacts.” We discuss the potential use of safe lists in the management of biological invasions; disentangle aspects related to the purpose, development, implementation, and impact of safe lists; and provide guidance for those considering to develop and implement such lists

Samewerking tussen universiteite en blanke-onderwyserskolleges : 'n histories-kritiese ondersoek

Gevorderde werkstuk (M. Ed.) -- Universiteit van Stellenbosch, 1986.Full text to be digitised and attached to bibliographic record

Occupational stress, sense of coherence, coping, burnout and work engagement of registered nurses in South Africa

The aim of this study was to assess the relationship between the occupational stress, sense of coherence, coping, burnout and work engagement of registered nurses in South Africa. A cross-sectional survey design was used. The study population consisted of 818 registered nurses. The Nursing Stress Inventory, the Orientation to Life Questionnaire, the COPE, the Maslach Burnout Inventory-Human Services Survey, and the Utrecht Work Engagement Scale were administered. The results show that the experience of depletion of emotional resources and feelings of depersonalisation by registered nurses were associated with stress due to job demands and a lack of organisational support, focus on and ventilation of emotions as a coping strategy, and a weak sense of coherence. Work engagement was predicted by a strong sense of coherence and approach-coping strategies

Primary spontaneous pneumothorax in a recreational athlete

Primary spontaneous pneumothorax (PSP) is relatively uncommon in the athletic population. Because of the subtle nature of the symp toms, the diagnosis is easily missed, which can lead to unnecessary prolonged discomfort and recovery time for the athlete. ere is currently a lack of evidence in the literature concerning treatment and return-to-play protocols referring specically to PSP within the athletic community. is case report highlights the predisposing and important factors in the history of a 34-year-old recreational male athlete who developed PSP. According to the knowledge of the authors, this report of PSP in a recreational athlete is the rst of its kind described in South Africa. Owing to the possibility of life-threatening complications, it is important for sports physicians to be familiar with the important points in the history and to be made aware of the predisposing factors that may lead to PSP

Effect of storage regime on the stability of DNA used as a calibration standard for real-time polymerase chain reaction

This article looks at storage factors influencing the stability of potential DNA calibration standards for use in quantitative polymerase chain reaction (PCR). Target sequences from the bacteria Campylobacter jejuni were cloned into a plasmid vector. Samples of these potential calibration standards were stored at +4, −20, and −80 °C as aqueous and lyophilized samples and were prepared as both single-use aliquots and multiple-use preparations. Results showed that the samples stored as single-use aqueous solutions at +4 °C and lyophilized samples stored at +4 and −20 °C were the most stable. Samples stored as frozen aqueous solutions at −20 °C were the least stable