Svo2 - Study guides, Class notes & Summaries

A patient admitted with sepsis has a pulmonary artery catheter placed that also measures SvO2. During a routine assessment, the nurse notes that the patient's SvO2 is 56%. The nurse knows that this indicates:oxygen supply is not equal to demand. Which hemodynamic changes are associated with mitral stenosis?Elevated left atrial pressure, pulmonary artery occlusive pressure, and pulmonary artery diastolic pressure; normal left ventricular end-diastolic pressure

Which of the following would be the earliest auscultatory finding in left ventricular failure (LVF)? A. Crackles B. S3 C. Murmur of mitral regurgitation D. Pericardial friction rub Ans: B. S3 LVF would be the most subtle because early changes are usually subtle changes. Choose "S3." A patient with a triple-lumen subclavian catheter has been receiving total parenteral nutrition, maintenance fluids, and antibiotics by the catheter. He has been slightly confused. Suddenly he grasps...

CCRN Test Bank Questions and Answers 100% Pass Which of the following would be the earliest auscultatory finding in left ventricular failure (LVF)? A. Crackles B. S3 C. Murmur of mitral regurgitation D. Pericardial friction rub B. S3 LVF would be the most subtle because early changes are usually subtle changes. Choose "S3." A patient with a triple-lumen subclavian catheter has been receiving total parenteral nutrition, maintenance fluids, and antibiotics by the catheter. He has been slig...

AACN CSC Review Course Session 1 UPDATED Exam Questions and CORRECT Answers 70% - Correct ANSWER- at rest the myocardium extracts ___% of available oxygen 30-35% - Correct ANSWER- normal SvO2 in heart 60-80% - Correct ANSWER- normal SvO2 in body coronary perfusion pressure - Correct ANSWER- DBP - LVEDP > 40 mmHg - Correct ANSWER- normal coronary perfusion pressure

Tx to decrease preload - -Diuretics -Dilators (nitrates, nitroprusside, morphine) Define preload - -Preload is the volume/pressure in the ventricle at the end of DIASTOLE after the AV valves close, just prior to ejection -As preload increases, SV and CO will increase up to a point -Too high of a preload may lead to heart failure -Preload will seldom be elevate if the heart is without disease and there are no metabolic abnormalities Cardiac output equation - CO = HR x SV Components of str...

Prophecy General ICU RN A V1 What is cardiac tamponade? Fluid in the pericardial sac causing decreasing preload. This decreases SV and ultimately CO. Effects of Hyper/Hypokalemia and calcemia on EKG Hypokalemia causes U waves Hyperkalemia causes peaked T waves Normal BP? 90-120/60-80 Normal HR? 60-100 bpm Normal CO? 4-8 L/min Normal SVR? 800-1,200 dynes/seconds Normal PVR? 37-250 dynes/sec/cm5 Normal SVo2? 60-80% Normal PAP? Systolic: 15-30 mm Hg Diastolic: 4-12 mm Hg Normal...

What is the most important sign in a critically ill pt? Why? - Correct answer-Tachypnea Indicates metabolic acidosis w/ respiratory alkalosis compensation A pt misses dialysis for a few days and comes in with fluid overload. He's tachycardic and tachypneic. On physical exam, you find JVD, pulsus paradoxus (20 mmHg drop during inspiration), and HoTN (80/40) with distant, muffled heart sounds. Lungs are clear to auscultation. What is the dx? - Correct answer-Cardiac tamponade; obstructive s...

Which of the following would be the earliest auscultatory finding in left ventricular failure (LVF)? A. Crackles B. S3 C. Murmur of mitral regurgitation D. Pericardial friction rub -:- B. S3 LVF would be the most subtle because early changes are usually subtle changes. Choose "S3." A patient with a triple-lumen subclavian catheter has been receiving total parenteral nutrition, maintenance fluids, and antibiotics by the catheter. He has been slightly confused. Suddenly he grasps...

Low SVO2 - Answer- greater than or less than 60 low pO2 - Answer- less than 60 high fiO2 - Answer- greater than 80 how to administer platelets - Answer- use gravity tubing not through pump. premedicate with famotidine and benadryl STEMI - Answer- -greater than 1 mm ST elevation in 2 or more continous leads inferior wall MI is in which leads - Answer- -II, III, AVF Anterior wall MI - Answer- -V3 and V4 Septal wall MI - Answer- V1 and V2 Lateral wall MI - Answer- I, AVL, V5...

One hemodynamic benefit of intra-aortic balloon therapy is: A) Balloon inflation prevents right to left shunt B) Balloon deflation increases coronary artery perfusion C) Balloon inflation optimizes aortic valve performance D) Balloon deflation decreases left ventricular afterload - D) Balloon deflation decreases left ventricular afterload Which of the following hemodynamic profiles would benefit from aggressive fluid administration, pressors and antibiotic therapy? A) RAP 1, PAOP 4, SVR ...