atrial – ABC CARDIOL

ABCIC

My Approach To

My Approach to Imaging the Atrial Septal Defect by Three-Dimensional Echocardiography

Pre-procedural assessment

At the end of a detailed 2D TEE with a full septal analysis from the four-chamber view to bicaval section and color mapping, we commence the 3D image acquisition. The en-face projection of the ASD and the defect’s positioning in the anatomic position provide valuable information from a single image: size, shape, location in the interatrial septum, characteristics of the defect’s borders, and the presence of additional fenestration.

I usually start the 3D evaluation from the perspective of the right atrium to facilitate the identification of anatomical markers. I acquire a medium angle block (3D or 4D zoom) or a large block (full-volume using the two-section tool) starting from an initial bicaval section and proceeding with approximate 90° rotation in the z-plane so that the superior and inferior vena cava are aligned in the vertical plane (i.e., superior vena cava at the 11 o’clock position) and the aorta in the anterior and superior region. I prefer not to use the narrow-angle mode for acquisition (live 3D or bird’s eye view) or very high magnification due to a loss of anatomical references adjacent to the defect, which can interfere with this fundamental initial analysis. From this reconstruction (), I can characterize the defect as unique, the OS type, having an oval shape, being central, being medium-sized, and having adequate borders. shows the same ASD and allows assessment of the occurrence of dynamic variation in its dimension with the cardiac cycle.

[…]

Read Full Article

ABC

Case Report

Pseudo-pulmonary Embolism – A Case of Hypoxemia Associated with Right-to-left Shunt

Mariana Faustino et al. Ana Oliveira Soares Fernando Rodrigues Rui Anjos … António Freitas Victor M. Gil

Introduction

Platypnea orthodeoxia is a rare syndrome characterized by dyspnea and decreased arterial oxygen saturation when passing from the dorsal decubitus position to the sitting or upright position. It usually results from an intracardiac right-to-left shunt; however, the pathophysiological mechanism responsible for the positional nature of the shunt has not been clarified^,. We report a case of dyspnea and orthostatic hypoxemia, which was attributed to a right-to-left shunt due to atrial septal defect (ASD).

[…]

Read Full Article

ABC

Clinicoradiological Session

Case 4 / 2014 – 15-year-old Patient with Atrial Septal Aneurysm, Right Bundle Branch Block and Paroxysmal Atrial Fibrillation

Edmar Atik

Complementary tests

Electrocardiogram: () showed sinus rhythm and Full Right Bundle Branch Block (CRBBB) and Left Bundle Branch Anterior Superior Hemiblock (LAHB). QRS complex duration was of 0.13′ with rsr’ morphology in V1 and RS in V6, with negative T wave in V1 and V2. AP: +30º, AQRS: -30º, AT: 0º.

Chest radiography: Shows normal heart region and vascular markings ().

[…]

Read Full Article

My Approach to Imaging the Atrial Septal Defect by Three-Dimensional Echocardiography

Pre-procedural assessment

Pseudo-pulmonary Embolism – A Case of Hypoxemia Associated with Right-to-left Shunt

Introduction

Case 4 / 2014 – 15-year-old Patient with Atrial Septal Aneurysm, Right Bundle Branch Block and Paroxysmal Atrial Fibrillation

Complementary tests

Electronic Document Format (Vancouver)

Electronic Document Format (ABNT)

Electronic Document Format (APA)

Electronic Document Format (ISO)

Electronic Document Format (Vancouver)

Electronic Document Format (ABNT)

Electronic Document Format (APA)

Electronic Document Format (ISO)

Electronic Document Format (Vancouver)

Electronic Document Format (ABNT)

Electronic Document Format (APA)

Electronic Document Format (ISO)