10 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
lung disease • Pulmonary ... Arterial Hypertension ... Right to Left Shunt ... Defect ** • Atrial ... Right to Left Shunt
Hepatopulmonary Syndrome on Echocardiogram (A4C)
Hepatopulmonary Syndrome: Intrapulmonary shunting is most commonly demonstrated by contrast TTE when
Echocardiogram (A4C ... visualized in the left atrium ... with intracardiac shunt ... Echocardiogram #A4C ... #bubble #shunting
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
VIQ mismatch and shunt ... lung diseases, pulmonary ... asthma, COPD, pulmonary ... embolus SHUNT ... shunting (eg, atrial
Causes of Cyanosis in the Newborn - Differential Diagnosis Algorithm
Peripheral Only:
 • Poor Perfusion
 • Acrocyanosis
Hemoglobinopathy:
Only: • Poor Perfusion ... Left-to-Right Shunt ... Arteriosus • Atrial ... Total Anomalous Pulmonary ... Right-to-Left Shunt
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
1) or anatomic shunt ... cycles after right atrial ... blood gas (ABC) ... cirrhosis • Intra-pulmonary ... scanning or pulmonary
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Right to Left Shunt ... - Anatomic Shunt ... - Physiologic Shunt ... Disease and more • Diffusion ... Gradient #alveolar #arterial
Double Shunt on Echocardiogram
What do you see on this saline contrast study, in a patient with
Double Shunt on ... liver disease and pulmonary ... Early transit of bubbles ... as RAP>LAP as atrial ... clinical #pocus #a4c
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
Effect in Right Atrium ... left to right shunt ... Effect #Right #Atrium ... echocardiogram #s4c ... #pocus #bubble
Perform computations online at:
ScyMed.com
6th ED
ICU-card
«ICU, Formulas & Drugs»
HEMODYNAMIC PATTERNS
Condition
SAP
CVP

PAP PCWP

CO C(a-v)02 PVR

SVR
Hypovolemic shock
↓
↓
↓
↓
↓
↑
↑
↑
Cardiogenic shock
↓
1
↑
1

1
↑

Septic shock
↓
↓
↓
↓
↑
↓
↓
↓
Cardiac Tamponade
.
↑
↑
1
↓

→
↑
RV
→ ↓ → →↑ Pulmonary ... +2PDP)/3 Mean Pulmonary ... DP-PCWP Coronary Perfusion ... = 1.36 cmH20 PULMONARY ... Qt 0.0-7.0 % Shunt
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
specific questions to ask ... murmur 3/6) - Pulmonary ... indication of AC ... days before Pulmonary ... CARP, DECREASE V trials