Archives: FRCA Part 1

FCA1-0710

A 72-year old man has presented to the emergency room with sweating, nausea, chest pain, and an ECG that shows ST elevation. The ST segment of the ECG corresponds to a period of slow calcium influx in the cardiac action potential. This equates to which phase in the cardiac action potential?

FCA1-0711

A 40-year old female comes to the GP’s office with unexplained weight gain, cold intolerance and fatigue. Her thyroid function tests are performed as there is a suspicion of hypothyroidism. A negative feedback mechanism is incorporated in the control of thyroid hormone release. All of choices below are also controlled by a negative feedback loop except:

FCA1-0712

A 25-year old male with palpitations and dizziness presents to the emergency room. In the triage process, cardiac monitoring shows supraventricular tachycardia with a heart rate of 200 beats per minute. This high heart rate arises as a result of different specialised cells and nerve fibres in the heart which are responsible for conducting that action potential which is generated in the event of systole. The fastest conduction velocity is carried out by which of the following?

FCA1-0713

All of the following are responses to massive haemorrhage except which of the following?

FCA1-0703

The rapid depolarisation phase of the myocardial action potential is caused by:

FCA1-0704

An 80-year old lady has a background history of a previous myocardial infarction which has left permanent damage to her heart’s conduction system. The part of the conduction system with the highest velocities is damaged, and this has resulted in desynchronisation of the ventricles. The part of the heart that conducts the fastest is which of the following?

FCA1-0705

Prophylactic antibiotics are required for which of the following procedures?

FCA1-0706

While on the ward, you notice a patient that is lying down supine and attached to a monitor is hypotensive with a blood pressure of 90/70mmHg and he is also tachycardic with a pulse of 120 beats/minute. After adjusting the bed with the patient’s legs raised by 45 degrees, you reassess the blood pressure after 1 minute and his blood pressure has increased to 100/75mmHg. You then prescribe IV fluids and ask for 500ml of normal saline to be given intravenously over 15 minutes. The increase in the blood pressure can be explained by which physiological association?

FCA1-0708

With regards to oxygen delivery in the body, which of these statements is true?