Which haemodynamic changes are observed in Phase II of the Valsalva Manoeuvre?
Hypotension and increased venous return
Hypotension and tachycardia
Hypertension and bradycardia
Hypertension and reduced venous return
Mechanism of Sodium Thiosulphate metabolism:
Oxidation (to pentobarbital)
Renal elimination unchanged
Which additive of propofol retards bacterial growth?
Soyabean Oil (intralipid)
Sodium Hydroxide (brings pH > 7)
At which temperature are platelets best stored at?
< -25 C
Which pathway describes the excretion and metabolism of rocuronium?
Non specific ester hydrolysis
Liver metabolism and excretion
Which of these describes the pressures acting on the lung
Mouth Pressure – Alveolar Pressure
Alveolar Pressure – Pleural Pressure
Alveolar Pressure – Atmospheric Pressure
Alveolar Pressure – Abdominal Abdominal
Eccrine sweat glands:
Are innervated by parasympathetic fibers releasing acetylcholine from their post synaptic fibers
Are innervated by parasympathetic fibers releasing noradrenaline from their post synaptic fibers
Are innervated by sympathetic fibers releasing acetylcholine from their post synaptic fibers
Are innervated by sympathetic fibers releasing noradrenaline from their post synaptic fibers
According to the oxygen cascade, which of the following has the lowest oxygen tension?
End expiratory gas
Central venous blood
Which cardiac reflex describes a rise in contractility in response to a raised heart rate?
Treppe effect (did not mention Bowditch) – frequency dependent inotropy
Omeprazole acts by
Irreversibly binding H/Na/KATPase pump
Reversibly binding H/Na/KATPase pump
Irreversibly binding the H/K/ATPase pump
Reversible binding of H/K/ATPase pump
Which of the following neuromuscular junction blocking drugs can induce a Phase II block?
Which of the following factors INCREASE cerebral blood flow?
According to the Stewart Physiochemical approach to acid base which of the following is a dependable variable:
Weak acid concentration
Strong Ion Difference
Which of the following stimulates bile secretion?
Mechanism of action of amphotericin
Inhibition of cell wall synthesis
Inhibition of DNA synthesis
Formation of membrane pores (by binding to ergosterol)
Inhibition of ergosterol synthesis
The pH of saliva
The normal pH of saliva is 6.7 to 7.4
The latent heat of vapourisation of water is:
For water at its normal boiling point of 100 ºC, the heat of vaporization is 2260 J g-1. This means that to convert 1 g of water at 100 ºC to 1 g of steam at 100 ºC,
2260 J of heat must be absorbed by the water.
Which of the following most correctly describes the Bohr effect?
A decrease in PaCO2 will decrease the affinity of oxygen for haemoglobin
An increase in PaCO2 will promote oxygen offloading in the tissues
A decrease in pH will decrease the affinity of oxygen for haemoglobin
An increase in temperature will increase the affinity of oxygen for haemoglobin
Which of these drugs has the SHORTEST context sensitive half time after a 12hr infusion?