Monitoring Equipment Flashcards
Where does the waves of electrical activity start in the electro cardiogram
The waves of electrical activity starts in the sinoatrial node and travels to the internodal tracks through atrial contraction. Then it travels to the atrioventricular node where the purkinje fibers cause ventricular contraction
What does the P wave represent
Electrical depolarization of atrial myocardium prior to contraction
What does the QRS complex
Depolarization of ventricle myocardium prior to contraction
What does the T wave represent
Ventricular re polarization
What does the electrocardiograph do
Sensitive voltage metering instrument that amplifies hearts electrical impulses
What position does the animal need to be placed for an electro cardiogram
Right lateral recumbent sea on a non-conductive surface. Limbs need to be perpendicular and parallel to each other
What is a pair of electrodes called
A lead
What is the principal lead used to assess arrhythmias
Lead to placement
What is blood pressure
Pressure exerted by circulating blood on arterial walls
What is the systolic pressure
Highest pressure of the cardiac cycle
What is diastolic pressure
Lowest pressure of cardiac cycle
What is map
Mean arterial pressure
What is blood pressure an indicator of
Anesthetic depth
Cardiac function
Organ perfusion
What are two indirect blood pressure monitors
Doppler bp
Oscillometer bp
What is a Doppler bp monitor
Continuously monitor hr and heart rhythm
What are the 4 arteries where yu can place the Doppler
Median palmar artery
Dorsal pedal artery
Coccygeal artery
Femoral artery
What is pao2
Oxygen partial pressure in the arteries
What is sao2
Arterial hemoglobin saturated with O2
What light is used by the pulse oximeter
Oxygenated hemoglobin absorbs red light
Deoxygenated hemoglobin absorbs infrared light
What are two factors affecting accuracy of the pulse oximetry device
External light sources Electro cautery Tissue thickness Darkly pigmented tissues Well perfused area Area with no hair Excessive movement Hypothermia Anemia Drug effects
What does a capnograph do
Measures amount of co2 in patients inhaled and exhaled air.
What is an electrocardiogram
Graphic representation of the hearts electrical activity as it travels to the cardiac conduction system
