COMPLETE QUESTIONS AND VERIFIED
ANSWERS
◉What are the causes of a left bundle branch block?. Answer: -
myocardial infarction
- cardiomyopathy
- severe hypertensive heart disease
- myocarditis
- advanced aortic stenosis
◉How does a left bundle branch block present on an ECG?. Answer:
Negative deflection wide QRS and opposite T wave deflection
(carrot), may have small R wave followed by S wave
◉What are the causes of prolonged QTc?. Answer: - antiarrythmics
- antimicrobials
- antidepressants
- antipsychotics
,◉What QTc value means that is is prolonged?. Answer: QTc greater
than 500
◉How much oxygen can be used in a nasal cannula?. Answer: 0.25L
to 6L
◉How much oxygen can be used in a oxymask?. Answer: 5L to 10L
◉How much oxygen can be used in an aerosol mask?. Answer: 10L
◉How much oxygen can be used in a non-rebreather mask?.
Answer: > 10L
◉What is perfusion?. Answer: The forward flow of blood carrying
oxygen to the cells and tissues
◉What are the requirements of perfusion?. Answer: - oxygen
carrying capacity
- ability of oxygen to attach to the red blood cells
- cardiac output
- blood pressure
,◉What is oxygenation?. Answer: The process of attaching O2 to the
red blood cells
◉What is ventilation?. Answer: Physically moving air in and out of
the lungs
◉What is systolic blood pressure?. Answer: Pressure on the arterial
walls during ventricular contraction
◉What is diastolic blood pressure?. Answer: Pressure during
ventricular relaxation
◉What is the equation for mean arterial pressure (MAP)?. Answer:
[(2 x DBP) + SBP] / 3
◉What is the equation for cardiac output?. Answer: Stroke volume x
HR
◉How do we assess perfusion?. Answer: - oxygenation and
ventilation
- pulses
- blood pressure
- skin
- kidneys
, -sensorium
◉What skin findings indicate perfusion status?. Answer: - flushed
skin means the vessels are dilated
- pale skin means the vessels are constricted
- ash skin means poor oxygenation
◉How do we assess oxygenation?. Answer: SpO2 and PaO2
◉How do we assess ventilation?. Answer: Respiratory rate and
pattern and PaCO2
◉What is preload?. Answer: The amount of fluid filling the heart
◉How do you assess preload?. Answer: - HR
- urine output
- skin
- pulses
- passive leg raise
- ultrasound