Peter Mandelsson is a 64 year old gentleman who has presented to the emergency department with a 1 hour history of a central crushing chest pain. He has associated shortness of breath, pallor and oxygen saturations of 94%. What is the most likely finding on ECG? a) ST elevation b) S1Q3T3 c) Right axis deviation d) J waves e) No changes
a) ST elevation. The scenario described indicates a myocaridal infarction and of the options given, this is the most likely. The only other possibility is (e) no changes but this is less likely than (a). (b) is a rare finding on an ECG associated with pulmonary embolism. (c) right axis deviation indicates strain on the right side of the heart. (d) j waves can be a rare normal variant but are also associated with hypothermia and hypercalcaemia.
Resolve this equation: 14 = 3x + 2
If 14 = 3x + 2, we want to resolve to find out what x is. Firstly, we can subtract 2 from each side of the equation: 14-2 = 3x + 2 - 2 --> 12 = 3x. Then we can divide both sides by three: 12/3 = 3x/3 --> 4 = x
A 74 year old man presents with a 2 month history of numbness and tingling in his lateral 3 1/2 fingers of his right hand. Given the distribution of the symptoms, which nerve is most likely affected?
The affected nerve is the median nerve. The median nerve can get compressed as it traverses through the carpal tunnel and into the hand. This gives rise to the symptoms described above. The ulnar nerve supplies the medial 1 1/2 fingers.