Prognostic Value of Clockwise and Counterclockwise Rotation
In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4). ...
ECG Challenge: New Beats With a Pacemaker - Medscape
Jul 22, 2024 · There is a regular rhythm at a rate of 110 beats/min. P waves occur before each QRS complex (+) with a stable PR interval (0.12 sec). ... have a normal morphology, axis, and …
ECG Challenge: A Counterclockwise Rotation - Page 2 - Medscape
Jan 9, 2019 · All of the QRS complexes are identical, and they have a normal duration (0.08 sec) and normal axis between 0° and +90° (positive QRS complex in leads I and aVF). The …
Occasional Lightheadedness and Concerning ECG - Page 3
May 3, 2024 · The QRS complexes have a normal duration (0.08 sec) and there is a normal axis. The QRS complexes have low voltage (< 5 mm in each limb lead and < 10 mm in each …
ECG Challenge: What's Behind Her Slow Pulse? - Page 2 - Medscape
Aug 8, 2019 · The QRS complexes are narrow (0.08 sec) and have a normal morphology and normal axis between 0° and +90° (positive QRS complex in leads I and aVF). The average …
The Telltale Tall R Waves - Page 2 - Medscape
Oct 2, 2018 · The QRS complex duration is normal with a normal axis between 0° and +90° (positive QRS complex in leads I and aVF). However, the QRS complex morphology is not …
ECG Challenge: Dysuria, Hematuria, and Fever - Page 2 - Medscape
Feb 21, 2024 · The QRS complex duration is normal (0.08 sec), and the axis is normal between 0° and +90°. The QRS complex is positive in leads I and aVF. The S wave in lead V2 ( [ ) is 22 …
ECG Challenge: Crackling Lung Sounds and Edema - Medscape
Aug 19, 2024 · The QRS complex duration is increased (0.16 sec) with a normal axis between 0° and +90° (positive QRS complex in leads I and aVF). ... (440/510 msec) but are normal when …
ECG Challenge: Hyperlipidemia and Irregular Pulse - Medscape
May 22, 2024 · The axis is very leftward between -30° and -90° (positive QRS complex in lead I and negative in leads II and aVF). This is a left anterior fascicular block. The QT/QTc intervals …
ECG Challenge: Irregular Pulse in a Hypertensive Patient - Medscape
Sep 27, 2024 · The axis is extremely leftward between -30° and -90° with a positive QRS complex in lead I and negative QRS complexes in leads II and aVF. There is an initial R wave in leads …