GAMSAT Clinical Procedures and Protocols 5

Question 1

When performing electrical cardioversion for atrial fibrillation, the defibrillator should be set to which mode to avoid delivering a shock during the vulnerable period of the cardiac cycle?

Accepted Answer

Synchronized mode

Answer

Synchronized cardioversion delivers the shock on the R wave to avoid the T-wave vulnerable period, which could precipitate ventricular fibrillation.

Question 2

A patient requires pericardiocentesis for cardiac tamponade. The needle is inserted at which angle and location in the subxiphoid approach?

Accepted Answer

15–45 degrees, aimed toward the left shoulder

Answer

In the subxiphoid approach, the needle is inserted at 15–45 degrees below the skin surface, directed toward the left shoulder to enter the pericardial space.

Question 3

During an appendectomy, the appendix is found at the convergence of which anatomical structure on the cecum?

Accepted Answer

Teniae coli

Answer

The three teniae coli converge on the cecum at the base of the appendix, making them a reliable surgical landmark for locating the appendix.

Question 4

A patient with suspected deep vein thrombosis has a positive D-dimer. What is the most appropriate next diagnostic step?

Accepted Answer

Compression ultrasound of the affected limb

Answer

Compression ultrasound is the first-line imaging investigation for DVT due to its high sensitivity and specificity, non-invasive nature, and absence of radiation.

Question 5

When assessing a burn injury using the Rule of Nines in an adult, what percentage of total body surface area does each arm represent?

Accepted Answer

9%

Answer

Each arm accounts for 9% of total body surface area in adults using the Rule of Nines, which guides fluid resuscitation calculations in burn management.

(GAMSAT) Graduate Medical School Admissions Test Practice Test

(GAMSAT) Graduate Medical School Admissions Test Practice Test

GAMSAT Clinical Procedures and Protocols 5