Complete the following ECG criteria for a sinoatrial (SA) block:
Rhythm ________________________________________
Rate ________________________________________
P waves ________________________________________
PR interval ________________________________________
QRS duration ________________________________________
Fill in the blanks with correct word
Rhythm Irregular because of the pause caused by the SA block; the pause is the same as (or an exact multiple of) the distance between two other P-P intervals.
Rate Usually normal, but varies because of the pause.
P waves Positive (upright) in lead II, P waves look alike; when present, one precedes each QRS complex.
PR interval 0.12 to 0.20 seconds and constant from beat to beat.
QRS duration 0.11 seconds or less unless abnormally conducted.
You might also like to view...
An elderly man presents to the CCU with a blood pressure reading of 190/125, severe headache, visual disturbances, and bleeding from his eyes. The nurse recognizes this condition as which of the following?
A) Pericarditis B) Endocarditis C) Dilated cardiomyopathy D) Hypertensive crisis
An IV is infusing at 23 mcgtt/min. What would this rate of flow equal in mL/h?
1. 23 mL/h 2. 230 mL/h 3. 2.3 mL/h 4. 18 mL/h
A patient in diabetic ketoacidosis has the following arterial blood gasses: pH 7.25; pCO2 30 mm Hg; HCO3- 16 . The patient has rapid, regular respirations. The nurse's best response would be to
a. ask the patient to breathe into a paper bag to retain CO2. b. administer sodium bicarbonate. c. administer insulin and fluids intravenously. d. prepare for intubation.
What is the difference between a thrombus and an embolus?
What will be an ideal response?