What is do2 - Study guides, Class notes & Summaries

Ashman phenomenon is a predisposition for aberrancy when which of the following occurs? A. A long P-P interval is followed by a short P-P interval. B. A short P-P interval is followed by a long P-P interval. C. A short R-R interval is followed by a long R-R interval. D. A long R-R interval is followed by a short R-R interval. - correct answer D Ashman phenomenon occurs when a short cycle follows a long cycle. Refractory periods are related to cycle length. When a short cycle follo...

(Solved with Rationales) Pass CCRN test bank. 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 ...

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...

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...

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...

Pass CCRN 120 Study Questions with Complete Solutions 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 - Correct Answer 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 t...

A-a gradient formula and normal range Correct Answer-PAO2- PaO2 PAO2 = FiO2 x (Patm- Ph20) - (PCo2/RQ) PAO2 = 150 - (PCO2/0.8) Normal is 10-250 Increased A-a gradient Correct Answer-- VQ mismatch (ex. COPD, PE, PNA) - responds to 100% O2 - Right to left shunt (ex. ARDs - Decreased diffusion (ex. ILD) Normal A-a gradient Correct Answer-- Low mixed venous O2 (ex. high altitude) - Hypoventilation (ex. drug OD) Acute vs chronic pH changes (hypercapnia/respiratory acidosis) Correct Ans...

CCRN PASS TEST BANK EXAM WITH QUESTIONS AND WELL VERIFIED ANSWERS [ALREADY GRADED A+] ACTUAL EXAM 100% REAL EXAM!!! 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 the catheter and pulls it out. He then complains of shortness of breath, and his pulse oximetry indicates an SpO2 of 84%. How should this patient be positioned? A. Head...

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...

A patient received Humulin NPH insulin at 7 am. He was nauseated and vomiting at lunchtime and cannot tolerate PO. If this patient develops manifestations of hypoglycemia, treatment would include: A. 25 ml of 50% dextrose in water (D50W). B. glucagon subcutaneously. C. 4 oz of apple juice. D. 100 ml of 5% dextrose in water (D5W). - A. 25 ml of 50% dextrose in water (D50W). A volume of 25 ml of D50W would provide 12.5 g of carbohydrate and 50 calories. A patient had a craniotomy 2 days...