Uses of ultrasound in anesthesia
Mohammed Said Nasef Zedan;
Abstract
Ultrasound is a rapidly rising and flourishing technology invading the local anesthesia field, as direct visualization of the nerves and surrounding structures improves the outcome of most techniques.
The study of the physical principles and the mechanism of action of the sound and the ultrasound waves makes the usage of the ultrasound unit much easier and also helps the user to choose the proper probe and frequency for the purpose needed.
The nature of ultrasound waves being reflected, refracted and scattered is the corner stone for the principle of action of ultrasound which makes it possible to visualize different tissues with various depth from the probe.
Different techniques were proposed for peripheral nerve blocks which describe mainly the blocks for upper limb, lower limb , abdominal wall and neuroaxial blocks which provide intra and post operative anesthesia and analgesia which are becoming more easy and effective using the ultrasound units.
Transesophageal echo is extremely useful in patients undergoing surgical correction of congenital cardiopathies because, besides helping the hemodynamic management, it can provide new information capable of improving the final result of the surgery.
Central venous access and arterial cannulation remain challenging even for experienced anesthesiologists. Ultrasound guidance technique is becoming the gold standard for central venous catheter (CVC) placement because it can both increase the success rate and decrease the complications.
US has several advantages for imaging of the airway – it is safe, quick, repeatable, portable, widely available, and it must be used dynamically for maximum benefit in airway management, in direct conjunction with the airway management, i.e. immediately before, during, and after airway interventions.
The noninvasively estimated pressure waveforms using ultrasound showed a good agreement with the reference pressure waveforms. Pressure values were predicted with a precision of 0.2 kPa (1.5 mm Hg). An accurate beat to beat pressure estimation could be obtained.
The study of the physical principles and the mechanism of action of the sound and the ultrasound waves makes the usage of the ultrasound unit much easier and also helps the user to choose the proper probe and frequency for the purpose needed.
The nature of ultrasound waves being reflected, refracted and scattered is the corner stone for the principle of action of ultrasound which makes it possible to visualize different tissues with various depth from the probe.
Different techniques were proposed for peripheral nerve blocks which describe mainly the blocks for upper limb, lower limb , abdominal wall and neuroaxial blocks which provide intra and post operative anesthesia and analgesia which are becoming more easy and effective using the ultrasound units.
Transesophageal echo is extremely useful in patients undergoing surgical correction of congenital cardiopathies because, besides helping the hemodynamic management, it can provide new information capable of improving the final result of the surgery.
Central venous access and arterial cannulation remain challenging even for experienced anesthesiologists. Ultrasound guidance technique is becoming the gold standard for central venous catheter (CVC) placement because it can both increase the success rate and decrease the complications.
US has several advantages for imaging of the airway – it is safe, quick, repeatable, portable, widely available, and it must be used dynamically for maximum benefit in airway management, in direct conjunction with the airway management, i.e. immediately before, during, and after airway interventions.
The noninvasively estimated pressure waveforms using ultrasound showed a good agreement with the reference pressure waveforms. Pressure values were predicted with a precision of 0.2 kPa (1.5 mm Hg). An accurate beat to beat pressure estimation could be obtained.
Other data
| Title | Uses of ultrasound in anesthesia | Other Titles | استخدامات الموجات فوق الصوتية في التخدير | Authors | Mohammed Said Nasef Zedan | Issue Date | 2013 |
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