Ontology type: schema:ScholarlyArticle Open Access: True
2019-12
AUTHORSTiina M. Ikäheimo, Miia Länsitie, Rasmus Valtonen, Heidi E. Hintsala, Niilo Ryti, Juha Perkiömäki, Matti Mäntysaari, Arto J. Hautala, Jouni J. K. Jaakkola
ABSTRACTBACKGROUND: Methodological information acknowledging safety of cardiac patients in controlled medical experiments are lacking. The descriptive report presents one good practice for considering safety in a randomized controlled study involving augmented cardiovascular strain among persons with coronary artery disease (CAD). METHODS: The patients were pre-selected by a cardiologist according to strictly defined selection criteria. Further confirmation of eligibility included screening of health. In addition, assessments of physical capacity by a graded bicycle ergometer test were implemented and safety monitored by an exercise physiologist and medical doctor. In this context, an emergency simulation was also carried out. A total of 18 CAD patients each underwent four different experimental interventions where either temperature (+ 22 °C and - 15 °C) and the level of exercise (rest and brisk walking) were employed for 30 min in random order (72 experiments). Baseline (20 min) and follow-up (60 min) measurements were conducted resting at + 22 °C. ECG, and brachial blood pressure were measured and perceived exertion and symptoms of chest pain inquired throughout the experiments. An emergency nurse was responsible for the health monitoring and at least two persons followed the patient throughout the experiment. A medical doctor was available on call for consultation. The termination criteria followed the generally accepted international guidelines for exercise testing and were planned prior to the experiments. RESULTS: The exercise test simulation revealed risks requiring changes in the study design and emergency response. The cardiovascular responses of the controlled trials were related to irregular HR, ST-depression or post-exercise hypotension. These were expected and the majority could be dealt on site by the research personnel and on call consultation. Only one patient was encouraged to seek for external health care consultation. CONCLUSIONS: Appropriate prospective design is a key to safe implementation of controlled studies involving cardiac patients and stimulation of cardiovascular function. This includes careful selection of participants, sufficient and knowledgeable staff, as well as identifying possible emergency situations and the required responses. TRIAL REGISTRATION: ClinicalTrials ID: NCT02855905 . More... »
PAGES69
http://scigraph.springernature.com/pub.10.1186/s12872-019-1051-1
DOIhttp://dx.doi.org/10.1186/s12872-019-1051-1
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/30909877
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