Causes of increased svo2 - Study guides, Class notes & Summaries

1. E-D = ERV 160. A healthy 30-year-old woman is referred for a life insurance physical exam. History reveals that she has never smoked and vesicular breath sounds are heard at the periph- ery of the lung with aus- cultation. In the patient's spirometry tracing below, the expiratory reserve vol- ume (ERV) equals which of the following? 2. .21*380 = 80 mmHg 161. A group of third-year medical students accom- panied a medical mission team to Peru, South Amer- ica. After arriving at the ai...

How does COPD result in atrial fibrillation and predisposition to PEs? - COPD causes pulmonary hypertension, right ventricular hypertrophy, and right atrial enlargement. The right atrial enlargement causes stretching of the atrial tissue and frequently results in atrial dysrhythmias. SA blocks, second-degree AV block type I, and third-degree AV heart block at the level of the AV node would occur in _______________ occlusion - RCA (as seen in inferior wall MIs) There is (more/less) risk of b...

A patient develops atrial fibrillation after abdominal surgery. Her blood pressure falls from 110/70 mm Hg to 92/68 mm Hg. The hypotension is related to which of the following? a. Decrease in ventricular contractility b. Hypovolemia c. Mural thrombi d. Decrease in ventricular filling - Correct answer: d Rationale: The contribution that atrial contraction makes to ventricular filling volume is approximately 15% to 30%. Atrial fibrillation results in quivering but not contracting atria. The...

ACNP Shock States Latest Update Graded A+ Central Venous Pressure A measure of the pressure exerted by fluid in the right atrium; indicative of right sided heart function Normal: 0-6 CVP Elevation Ex. Fluid overload, cardiogenic shock Conditions that cause an increase in the amount of fluid in the R atrium CVP Decreased Ex. Dehydration, Distributive shock Conditions that cause a decrease in the amount of fluid in the R atrium Pulmonary Artery Pressure a measure of the systolic and diastolic p...

S1 Lub - start of systole Closure of AV (Mitral and tricuspid) S2 Dub Closure: Aortic and pulmonic louder with PE S3 heart failure and cor pulmonale, mitral, aortic, tricuspid insufficiency/regurg S4 cause by atrial contraction (not in afib) HTN, MI, aortic stenosis, and ventricular hypertrophy Insufficiency (regurg) occurs when valve is _______? Stenosis occurs when valve is ________? Insufficiency (regurg) = closed = chronic/acute Stenosis = open = chronic Systolic Murmurs: wha...

What will the nurse identify as symptoms of hypovolemic shock in a patient? (choose all that apply) A) Capillary refill time greater than 30 seconds B) Temperature of 97.6F (36.4C) C) Decrease in blood pressure of 20 mmHg when the patient sits up D) Restlessness E) Sinus bradycardia of 55 beats per minute - CORRECT ANSWER-A) Due to decreased blood flow to the brain and peripheral areas when blood is shunted to maintain the vital organs, capillary refill time will be reduced C) Orthostati...

FCCN II: cardiac concepts latest update graded A preload: what how wet/dry you are amount of fluid filling heart *affected by dilating/constricting VEINS* R heart -CVP L heart -PCWP (wedge pressure) preload: affected by VEINS constrict --> INCREASE dilate --> DECREASE preload: frank-starling principle giving fluid improves CO up to a certain pt preload: Tx low -*crystalloids* -colloids: albumin, hespan -blood: PRBCs, plasma preload: Tx high -diuretics: lasix -vasodilators: NTG, nare...

CCRN Barrons Respiratory Concepts Exam Questions and Answers 100% pass Rely on mild hypoxemia for ventilator drive. if the PaO2 Is corrected to normal, this may result in a decreased drive to breathe - Answer- Chronic PaCO2 retainers What is the clinical indicator of ventilation - Answer- PaCO2 What is minute ventilation - Answer- tidal volume x respiratory rate +normal ventilation is about 4L/min an increase in minute ventilation = - Answer- an increase in work of breathing Primary musc...

Order when reading ABGs? - Oxygenation status (PaO2, level of FiO2 received, O2 delivery device), acid-base balance (pH), ventilation status (PaCO2-also influences acid-base balance), bicarbonate level What are the clinical indications for drawing an ABG? - Patient has a change in LOC, increasing respiratory difficulty, or low blood pressure (or change in BP on arrival). Why do we need to draw an ABG for a patient with low blood pressure? - Because if the body is acidotic and the pH is ver...

When caring for a patient with an SVR of 600, which of the following are considered appropriate interventions by the nurse? SATA - Correct Answer ️️ -Administer fluids, administer dopamine, administer norepinephrine The nurse understands that which of the following are medications that increase the contractility of the heart? SATA - Correct Answer ️️ -Dopamine, dobutamine, milrinone The nurse understands that when caring for a patient on a ventilator, they must measure the PA press...