Four Stroke

What is the order of operation of a 4 stroke engine

• Intake, Power, Compression, Exhaust

• Exhaust, Intake, Compression, Power

• Intake, Compression, Power, Exhaust

• Compression, Exhaust, Power, Intake

Tags

NGSS.MS-PS2-1

The length the piston moves from top to bottom or bottom to top is called

• Stroke

• Bore

• Movement

• Lenght

During the first stroke (Intake), what valves are open-if any?

• Both closed

• Intake valve open, Exhaust closed.

• Both are open

• Intake valve closed, Exhaust valve open.

During the power stroke the piston moves________

• up

• down slighty

• in both directions

• down

During the exhaust stroke the piston moves________

• up

• in both directions

• the head bolts

• down

What are some common symptoms of a stroke?

• Paralysis of one side of body, slurring speech, facial droop

• Headache

• Chest pain

• Shortness of breath

Which of these are risk factors for stroke?

• High blood pressure

• Age > 55 years

• Low cholesterol

• Family history of stroke

• All of the above

Acute treatment for ischemic stroke includes

• IV alteplase <4.5hr

• IV alteplase >4.5hrs

• metoprolol

• simvastatin

Which of the following actions would reduce treatment time for suspected stroke?

• Get a chest x-ray upon ED arrival

• Obtain an arterial blood gas (ABG)

• Provide prehospital notification of possible stroke

• Get a detailed history of the patient from their family member

For suspected stroke, which of the following interventions should be done ASAP?

• CT scan of the brain

• X-ray of the brain

• Ultrasound of the brain

• Nerve conduction study