:) Flashcards
What does first and second downward deflections on V1 LBBB represent? [2]
he first downward deflection represents the right ventricle, and the slightly delayed 2nd downward deflection corresponds to the depolarisation of the left ventricle.
How can you tell if ST elevation is significant? [1]
ST elevation is significant when it is greater than 1 mm (1 small square) in 2 or more contiguous limb leads or >2mm in 2 or more chest leads.
State two causes of tracheal deviation towards [2] and away from [2] trachea
- Towards: pneumonectomy or collapsed lung
- Away from: tension pneumothorax and pleural effusion
This shows?
pneumothorax
.pneumoperitoneoum- perforation
10-29% risk of CAD: What investigation is most appropriate?
Angiography
Full blood count
Functional imaging – Stress echo
CT calcium scoring
Rule out non-cardiac causes of chest pain
10-29% risk of CAD: What investigation is most appropriate?
Angiography 61-90%
Full blood count
Functional imaging – Stress echo 30-59%
CT calcium scoring – measurement of calcium present in coronary arteries: assess degree of coronary artery disease
Rule out non-cardiac causes of chest pain - <10%
Postural hypotension is associated with?:
SBP decrease by >10mmHg
SBP decrease by >20mmHg
SBP decrease by >20mmHg, DBP decrease by >10mmHg
SBP decrease by >20mmHg, DBP increase by > 10mmHg
SBP decrease by >30mmHg, DBP decrease by >15mmHg
Postural hypotension is associated with?:
SBP decrease by >10mmHg
SBP decrease by >20mmHg
SBP decrease by >20mmHg, DBP decrease by >10mmHg
SBP decrease by >20mmHg, DBP increase by > 10mmHg
SBP decrease by >30mmHg, DBP decrease by >15mmHg
Draw a graph of up and down lung
What is the name of this sign and what is it testing? [1]
Phalens sign: The Phalen maneuver is performed by having the patient hold both wrists in complete and forced flexion (pushing the dorsal surfaces of both hands together) for 30-60 seconds. This can increase the pressure in the carpal tunnel.
What ligaments holds up the uterus to prevent it from prolapsing? [1]
cardinal ligament
Why does cleft palate occur? [1]
Failure of palatal shelves to fuse (from maxillary prominences)
internal thoracic artery is a branch of? [1]
the subclavian artery
- Carpal tunnel syndrome surgery. What do the surgeons have to cut through to get to the median nerve?
flexor retinaculum
Where is the appendix?
(the junction of the lateral and middle thirds of a line joining the umbilicus with the right anterior superior iliac spine (ASIS)
Great sciatic foramen contents?
Lesser sciatic foramen contents?
How do you calculate mean arterial pressure? [1]
MAP = DP + 1/3(SP – DP) or MAP = DP + 1/3(PP)
Where DP is the diastolic blood pressure, SP is the systolic blood pressure, and PP is the pulse pressure. This method is often more conducive to measuring MAP in most clinical settings as it offers a quick means of calculation if the blood pressure is known.
Order of vasculature and veins in intercostal groove? [3]
Vein, artery, nerve. The vein is the most superior, the artery is inferior to it, and then the intercostal nerve is the most inferior in the neurovascular bundle.
intercostal arteries which are branches of the descending aorta. The arteries have a thicker wall and so the blood in the lumen does not make them appear
dark as the veins.
- collagen fibres
- smooth muscle
- hyaline cartilage
- elastic fibres
- elastic cartilage
Elastic fibres in the wall of the bronchiole are continuous with those in the surrounding interalveolar septa. Radial traction on these fibres helps to keep the a
open.
anterior
interventricular
sulcus
- muscularis propria
(externa) - lamina propria
- adventitia
- serosa
- submucosa
- muscularis mucosae
- muscularis propria
(externa) - lamina propria
- adventitia
- serosa
5. submucosa - muscularis mucosae
in this cholangiogram the radioopaque dye has entered the duodenum (A is pointing to the 2nd part). The plicae circulares can be seen.
masseter supplied
by mandibular nerve
periosteum