EMT 1130 Final Exam (part 2)

when assisting a pt with his or her Rx inhaler, it is important to:

• have the pot exhale deeply prior to inhaling the medication

• instruct the pt to hold his or her breathe for 20 to 30 seconds

• avoid a spacer device, as this decreases the medications efficacy

when the level of arterial carbon dioxide rises above normal:

• respirations increase in rate and depth

• respirations decrease in rate and depth

• exhalation lasts longer than inspiration

you are assisting an asthma pt with his Rx inhaler. After the pt takes a deep breath and depresses the inhaler, you should:

• instruct him to hold his breath for as long as he comfortably can

• allow him to breath room air and assess his Sp02

• immediately reapply the oxygen mask and reassess his condition

dissecting aortic aneurysm

• when the inner layers of the aorta become separated

• a weakened area develops in the aortic wall

• the aorta ruptures, resulting in profound bleeding

which of the following blood vessels transports oxygenated blood

• pulmonary veins

• pulmonar arteries

• inferior vena cava

what is the function of the left atrium

• it receives oxygenated blood from the lungs

• it ejects oxygenated blood into the aorta

• it receives blood from the pulmonary arteries

when after load increases

• it becomes harder for the ventricle to push blood through the blood vessels

• the volume of venous blood that returns to the right atrium increases

• the amount of resistanced that the ventricle must beat against decreases

when an electrical impulse reaches the AV node, it is slowed for a brief period of time so that:

• blood can pass from the atria to the ventricles

• the impulse can spread through the purkinje fibers

• blood returning from the body can fill the atria

what is the term for cardiac muscles ability to contract spontaneously without a stimulus

• automaticity

• excitability

• contractility

when the myocardium requires more oxygen:

• the arteries supplying the heart dilate

• the heart rate decreases significantly

• the heart contracts with less force