Aortic Pulse Wave Velocity Sample Clauses

Aortic Pulse Wave Velocity. Arterial walls stiffen with age and the primary structural change with ageing is medial degeneration, which leads to progressive stiffening of the large elastic arteries [325]. The media of large arteries is composed of VSMC’s and elastic and collagen fibres, comprising functional musculoelastic sheets [326]. Arterial pulsation has a direct effect on collagen and elastin in the arterial wall, disrupting muscular attachments and causing elastin fibres to fatigue and fracture [325]. Another major change in the arterial wall is that of calcium deposition; the calcium content of the arterial wall increases with age, particularly after the fifth decade, which also contributes to arterial stiffness [327]. A well- validated method for the assessment of arterial stiffness is pulse wave velocity (PWV) [328, 329]. Increased PWV is related in part to the extent of calcium within the artery and is a simple, non-invasive, radiation free method for estimating VC. Pulse wave velocity can be measured in any arterial segment between two regions with carotid-femoral PWV is the most widely used method for assessing central arterial or aortic stiffness [330] which is shown to be an independent predictor of CV mortality and morbidity in the elderly [331, 332], as well as in the general population [333, 334]. The assessment of aortic PWV involves the measurement of two quantities: the transit time of the arterial pulse along an arterial segment and the distance between both recording sites (Figure 1.11).
Sample 1Sample 2
AutoNDA by SimpleDocs

Related to Aortic Pulse Wave Velocity

  • Signaling Link Transport 9.2.1 Signaling Link Transport is a set of two or four dedicated 56 kbps transmission paths between Global Connection-designated Signaling Points of Interconnection that provide appropriate physical diversity.

  • Loop Provisioning Involving Integrated Digital Loop Carriers 2.6.1 Where InterGlobe has requested an Unbundled Loop and BellSouth uses IDLC systems to provide the local service to the End User and BellSouth has a suitable alternate facility available, BellSouth will make such alternative facilities available to InterGlobe. If a suitable alternative facility is not available, then to the extent it is technically feasible, BellSouth will implement one of the following alternative arrangements for InterGlobe (e.g. hairpinning):

  • Integrated Digital Loop Carriers The feeder portion of some loops may be provide by means of Integrated Digital Loop Carrier (IDLC). IDLC provides a fiber optic cable transmission path that travels directly into BellSouth’s central office local switch. Where BellSouth uses IDLC ,if technically feasible and capacity does exist, BST will provide Al-Call with a Designed DS0 UVL by using alternative provisioning techniques including but not limited to such as “hairpinning” and DAC grooming. Alternative provisioning techniques will be provided at no additional cost to Al-Call . Hairpinning involves providing a DS0 signal from an IDLC-served loop to Al-Call ’s collocation equipment by using a dedicated pathway that traverses BellSouth’s central office switch. BellSouth will provide such DS0 signal to Al-Call by establishing a copper cross connect between the BellSouth switch and Al-Call ’s collocation equipment.

  • Open and Transparent Consistent with ICANN’s expressed mission and core values, ICANN shall operate in an open and transparent manner.

  • Traffic Measurement and Billing over Interconnection Trunks 6.1 For billing purposes, each Party shall pass Calling Party Number (CPN) information on at least ninety-five percent (95%) of calls carried over the Interconnection Trunks.

  • Net Metering If you generate electricity from a renewable generating facility to offset your electricity consumption and/or use net metering at any time during the term of this Agreement, you must notify Starion.

  • NOISE/WASTE The Tenant agrees not to commit waste on the premises, maintain, or permit to be maintained, a nuisance thereon, or use, or permit the premises to be used, in an unlawful manner. The Tenant further agrees to abide by any and all local, county, and State noise ordinances.

  • Dark Fiber Transport Dark Fiber Transport is defined as Dedicated Transport that consists of unactivated optical interoffice transmission facilities without attached signal regeneration, multiplexing, aggregation or other electronics. Except as set forth in Section 6.9.1 below, BellSouth shall not be required to provide access to Dark Fiber Transport Entrance Facilities pursuant to this Agreement.

  • Tandem Transit Traffic 12.1 As used in this Section, Tandem Transit Traffic is Telephone Exchange Service traffic that originates on CBB's network, and is transported through Verizon’s Tandem to the subtending End Office or its equivalent of another carrier (CLEC, ILEC other than Verizon, Commercial Mobile Radio Service (CMRS) carrier, or other LEC (“Other Carrier”). Neither the originating nor terminating customer is a Customer of Verizon. Subtending End Offices shall be determined in accordance with and as identified in the Local Exchange Routing Guide (LERG). Switched Exchange Access Service traffic is not Tandem Transit Traffic.

  • One-Way Interconnection Trunks 2.3.1 Where the Parties have agreed to use One-Way Interconnection Trunks for the delivery of traffic from PCS to Verizon, PCS, at PCS’s own expense, shall:

Time is Money Join Law Insider Premium to draft better contracts faster.