Noninvasive measurement of arterial blood pressure is an important function of modem monitoring systems. Presently, most arterial pressure measurement channels implement oscillometric method. This method is based on detection of small-amplitude pulsation of limb volume below occlusion cuff during compression/decompression. The main goal of the upgrade to the oscillometric method is to increase the accuracy, reliability, and noise protection of detection of arterial pressure parameters. This work describes a possible approach to improvement of reliability of the oscillographic method based on synchronous detection of several signals (e.g., volume signal, tachosignal and its derivatives with simultaneous correction of signal processing data on the bases of a priori information about signal, and processing adaptation of data processing algorithm to given signal realization).

The principles of action of new anesthetic devices and apparatuses for mechanical lung ventilation (MLV) including alternate-flow inhalation generators designed in recent time in VNIIMP-VITA, Ltd. are considered. According to the type of drive, these apparatuses fall into groups of devices with pneumatic drive (Diana) and electric drive (Elan). New technological approaches to design of gas flow commutators for pneumatic drive and respiratory contours of MLV apparatuses are discussed. The design of a new source of stable pneumatic signals providing reliable operation of the control valves of the inhalation and exhalation contours of electrically driven apparatuses. This source allows necessary MLV modes to be implemented during anesthesia.

In the new ventilator Avenir-221 P modern lines of development of ventilation support in intensive therapy of adults and children are implemented. The capacities of the ventilator are successfully combined with its technical decisions which include microprocessor parametrical controlling, programming-controlled electric drive, an information saturation, intuitively clear control system, protection against interruption of power supply sources and oxygen feeding falls. A set of functional characteristics (modes VCV, PCV, Ass/Contr, PSV, SIMV, PEEP, Sigh, etc.) in combination with an original design make the device the most accessible and promising for application in intensive care and resuscitation units of a wide network of Russian hospitals and clinics. The ventilator Avenir-221 P has passed all required tests and is presently commercially available.

The paper deals with the specific features of metrological support of multidetectors designed for radionuclide diagnosis. A procedure is proposed to monitor the technical data of KP RDI-2A and KP RDI-3A devices. The functional potentialities of basic and metrological support of these devices are outlined.