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Exam (elaborations)

NURS 644 Exam 1 Practice Questions and Correct Answers

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  • Course
  • NUR 644
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  • NUR 644

DDX Hypovolemic Shock Intravascular hypovolemia (hemorrhagic shock, renal loss, GI loss, Third spacing) Venodilation: anaphylaxis, neurogenic shock, drugs Impaired Cardiac Filling: Cardiac Tamponade, High pleural pressure (PEEP, TPX) other obstruction (tumor, thrombus) DDX Cardiogenic Shock Arrh...

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  • August 22, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NUR 644
  • NUR 644
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NURS 644 Exam 1 Practice Questions
and Correct Answers
DDX Hypovolemic Shock ✅Intravascular hypovolemia (hemorrhagic shock, renal loss,
GI loss, Third spacing)

Venodilation: anaphylaxis, neurogenic shock, drugs

Impaired Cardiac Filling: Cardiac Tamponade, High pleural pressure (PEEP, TPX) other
obstruction (tumor, thrombus)

DDX Cardiogenic Shock ✅Arrhythmia, Systolic RV or LV dysfunction (Ischemia, CM,
metabolic derangement, CCB, BB, sepsis, myocardial contusion, toxins)

Diastolic Dysfunction: Ischemia, Hypertrophy, Restrictive CM, Tamponade

Excessive afterload: PE, AS, Hypertrophic Obstructive CM, ARDS, Malignant HTN

Valve dysfunction: AI, Papillary muscle rupture, Endocarditis, MS

Device malfunction: ECMO, VAD, IABP

DDX Distributive Shock ✅Sepsis

Hepatic Failure

Adrenal Insufficiency

Thiamine Deficiency

Toxins (ASA, CO, Cyanide)

Thyroid Storm

AV shunts

Cellular dysoxia (prolonged shock states)

Prerequisites for weaning ✅Recovery of underlying condition

PaO2/FiO2 of >200

PEEP <8

, FiO2 < 50%

pH >7.25

Hemodynamic stability

Spontaneous breathing effort

Benefits of NIPPV ✅Less complications: barotrauma, cardiac arrhythmias,
hypotension, volutrauma, VAP

Indications for NIPPV ✅Acute hypercapnic RF in COPD

Cardiogenic Pulmonary Edema

Immunosuppressed patients with pulmonary infiltrates, fever and ARespFX

Ventilator management of O2 ✅Manipulation of FiO2 or PEEP

Ventilator Management of CO2 ✅Manipulation of tidal volume and rate

To retain Co2--> Lower rate/less Vt
To blow off CO2--.> increase rate/Vt

PUSH/PULL SIGN ✅Push: blood in lung space displaces lung to the other side.
Tracheal deviation. Hemothorax

Pull sign: Air vacuum pulls to affected side. Pneumothorax

Types of Acute Resp Failure ✅Hypoxemia vs Hypercabia

Hypoxemic RF V/Q Mismatch ✅Most common cause

PNA, PE, ARDS, Alveolar Collapse, Pulm AV communication

Increased A-a gradient

pulmonary vasoconstriction (reduce perfusion) to the area of the lung with reduced
ventilation

hypoxic pulmonary vasoconstriction- unique to pulm vasculature

responsive to O2 therapy

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