General overviews of basic monitoring:
The Journal of Clinical Monitoring and Computing has an on-line presence.
The ASA Closed Claims Project has produced a number of publications on the role of physiologic monitoring in anaesthesia mishaps.
My own notes on monitoring and measurement in anaesthesia can be found among my other study notes.
Some material on specific monitors is contained on sites covering monitoring in 'general material' listed above.
Most ECG-related material is focussed on 12-lead ECG and applications in cardiology rather than patient monitoring.
The ECG Learning Center in Cyberspace has detailed material on ECG interpretation.
A detailed tutorial and library of 12-lead ECGs maintained by Dean Jenkins and Stephen Gerred.
Other libraries of ECGs:
Non-invasive Blood Pressure
An outline of methods of NIBP measurement is available at Health Perfect.
A detailed description of NIBP waveform analysis at Dynapulse.
Invasive Blood Pressure
A detailed primer on pulmonary artery catheters and pressure measurement from Manbit Technologies.
The ASA Closed Claims Project published data on central line complications in 1996.
Dave Sainsbury's notes on CO2 monitoring
Peripheral Nerve Stimulation
University of Sydney's anaesthesia notes include an excellent review.
Dave Sainsbury's notes on the neuromuscular junction and PNS
The World Federation of Societies of Anaesthesiologists Update in Anaesthesia journal includes an article on pulse oximetry.
Dave Sainsbury's presentation on oxygen monitoring including pulse oximetry.
A handbook on BIS from Aspect.
A detailed history of ultrasound development.
A library of still images and references from Manbit Technologies.
Collections of images:
Oesophageal Doppler Monitoring
Deltex Medical manufactures a probe and provides an outline of its function and operation.
Standards of Practice
Professional bodies in many countries outline guidelines or standards for intraoperative monitoring.
Manufacturers of Monitoring Equipment
The major anaesthesia monitoring manufacturers are:
Other manufacturers include: