Author Archives: admin

Pacemaker setup – demand and non demand modes

There is a significant error in the wording on the Pacemakers page (page 110) regarding the set up of a transcutaneous pacemaker.

This section should read:

  • should be set to non demand mode when there is no organised rhythm
  • set to demand mode if no there is an organised rhythm as this prevents pacing on Q wave that can precipitate ventricular tachyarrhythmias

This error will be corrected in the online version with the next upload of files.

Beta HCG unit correction

The correct measurement units (mIU/mL) have been applied to the various pages where quantitative beta HCG levels have been used.Previously many of the values were quoted in IU/mL, or just IU. Please note that none of the values used in the manual have changed, just the units used have been corrected. Thanks to an astute subscriber for noting these errors.

Hypokalaemia corrections

Please be aware that on page 271 of the print version, and the old Hypokalaemia page (now corrected) (Link) had a few annoying little errors.

ECG changes of hypokalaemia occur when the K+ is < 2.7mmo/L not when it is >2.7mmol/L

The ECG image was of hypokalaemia (as in the title) despite the text beneath stating it was of hyperkalaemia.

U waves are often mistaken as T waves.

Coarse crackles

A short audio clip of coarse crackles on lung auscultation has been added to the Respiratory Examination page in the Respiratory Disorders section.

Shoulder dislocation

The Glenohumeral Joint Dislocation page has been significantly revised and a new page called Anterior Shoulder Dislocation Management has been added to the Bone and Joint Disorders section to aid navigation.

Report an error function not working

Please note that the Report an error link on the main header is not currently functional. Please use the adjacent Contact webmaster link to email any suspected errors on the website. We are currently working on a new feedback form to report suspected errors that will replace the existing links.


A CXR demonstrating a skin-plate artefact closely mimicking a pneumothorax has been added to the Assessment of Pneumothorax page in the Respiratory Disorders section.


An ECG demonstrating some of the features of HOCM has been added to the Cardiomyopathies page in the Cardiovascular Disorders section.


An ECG demonstrating the features of SVT in the presence of RBBB has been added to the Ventricular Tachycardia page (as a differential diagnosis) in the Resuscitation section.

RV dysplasia

An ECG demonstrating the abnormalities associated with RV dysplasia has been added to the Sudden Cardiac Death page in the Resuscitation section. The text associated with Right ventricular arrhythmogenic dysplasia has also been moved to this page from the Other Cardiac Abnormalities page in the Cardiovascular Disorders section.

P mitrale

An ECG demonstrating P mitrale has been added to the ECG and Abnormal Cardiac Chambers page in the Clinical Skills section.

P pulmonale

An ECG demonstrating P pulmonale been added to the ECG and Abnormal Cardiac Chambers page in the Clinical Skills section.

Failure to sense

Another ECG demonstrating a pacmaker failure to sense has been added to the Complications of Pacemakers page in the Resuscitation section.

Mitral regurgitant jet

A short video demonstrating the US features of a mitral regurgitant jet has been added to the Other valve disorders page in the Cardiovascular Disorders section.