Sinus Tachycardia

Question 1

Define Sinus Tachycardia

Answer 1

Discharge rate from the sinus node is increased as a result of vagal inhibition and is > 100 bpm

Question 2

Is there a P wave?

Answer 2

Yes

Question 3

Is there a QRS?

Answer 3

Yes; <.12

Question 4

Is there PR Interval?

Answer 4

Yes; .12 - .20

Question 5

What is the rate?

Answer 5

Greater than 100

Question 6

What is the rhythm?

Answer 6

Regular

Question 7

What are predisposing factors of ST?

Answer 7

1. Running (Exercise) 2. Hyovolemia (Dehydration) 3. Pain 4. Anxiety 5. Fever 6. Infection 7. CHF 8. Hyperthyroid

Question 8

What are some Clinical Manifestations of ST?

Answer 8

1. Dizziness 2. Hypotension 3. Increased need for 02

Question 9

What are some Treatments for ST?

Answer 9

1. Figure out underlying cause, Assess & Tx. 2. Limit Stimulants 3. Give 02 4. HR? Give Lasix 5. Doc to perform Carotid massage 6. Vagal Maneuvers 7. Ca channel blockers & Beta blockers

Question 10

What is the physiological cascade R/T ST?

Answer 10

1. Decreased Ventricular Filling time
2. Decreased Stroke Volume
3. Lowering BP
4. Reduced Cardiac Output
5. Inadequate Tissue Perfussion.

Question 11

What are some S/S R/T ST?

Answer 11

1. Palpatations
2. Dizziness
3. SOB