Betty is a professional high diver and takes a vacation to a beach she has not visited before. while there, she notices a tall cliff, which she thinks would make an excellent place to practice her diving. which of the following statements about this situation is false? a. it would be safer for betty to practice at home since she is unfamiliar with the area. b. it would be perfectly safe for betty to swim around and make sure the water is deep enough. if she finds that it is, the cliff could be a good place to practice. c. betty could check in town to see if there are any group tours that include supervised cliff diving, instead of diving alone. d. betty could do some research about the area and see if it is a common cliff for diving. if she finds that it is safe, she could then plan another trip with a group of fellow divers to practice at the cliff.

Which of these is most likely to prevent pregnancy? a. tracking of female body temperature to identify ovulation times b. proper condom use c. male withdrawal before ejaculation d. proper spermicide use

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A62-year-old man is being treated for an acute myocardial infarction. he originally came to the ed with substernal chest pain and diaphoresis. given his risk factors of hypertension, diabetes, tobacco use, and family history, he is considered high risk. an ecg in the ed reveals a left-bundle branch pattern, and cardiac enzymes are elevated slightly. after a focused evaluation in the ed, the patient receives iv thrombolytics. although his bundle branch pattern never resolves, the patient is chest pain-free and haemodynamically stable after thrombolysis. two days later, however, the patient reports episodes of recurrent chest discomfort and shortness of breath overnight. in evaluating for potential myocardial reinfarction, which of the following is the most appropriate diagnostic test? - creatinine kinase- dynamic ecg changes- lactate dehydrogenase- myoglobin levels- troponin i level