Critical Care Cardiology Flashcards
In response to ______, pulmonary arteries constrict.
hypoxia
In response to decrease in systemic perfusion, blood vessels ________.
constrict
Cardiac Output Formula
HR x Stroke Volume
Normal Range: Cardiac Index
2.5 - 5 L/min
Normal Range: Pulmonary Vascular Resistance
50 - 250 dynes
Normal Range: Systemic Vascular Resistance
800 - 1200 Dynes
The force required to accelerate a mass of one gram at a rate of one centimeter per second squared.
Dyne
The _____ “Kentucky” heart sound is caused by CHF or Chordae Tendinae dysfunction.
S3
The ____ “Tennessee” heart sound is caused by hypertrophic cardiomyopathy, HTN, Pulmonary or Aortic Stenosis
S3
Auscultation Points for heart sounds in order
Aortic
Pulmonic
Tricuspid
Mitral
(All Physicians Take Money)
This electrolyte flows into the cell to initiate depolarization.
Sodium
This electrolyte flows out of the cell to initiate repolarization.
Potassium
This electrolyte maintains depolarization of pacemaker cells/myocardial contractility
Calcium
This electrolyte stabilizes the cell membrane.
Magnesium
A complete block of the ____ is often called the “widow maker”
Left Coronary Artery
Troponin increases _____ hours from onset of chest pain.
3 - 12
Troponin peaks at 24 - 48 hours, and returns to baseline over ______ days
5 - 14