peripheral resistance

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Related to peripheral resistance: Total peripheral resistance


1. opposition, or counteracting force, as opposition of a conductor to passage of electricity or other energy or substance.
2. the natural ability of a normal organism to remain unaffected by noxious agents in its environment; see also immunity.
3. in psychology or psychiatry, conscious or unconscious defenses against change, preventing repressed material from coming into awareness; they can take such forms as forgetfulness, evasions, embarrassment, mental blocks, denial, anger, superficial talk, intellectualization, or intensification of symptoms. It occurs because the blocked association or understanding would be too threatening to face at this point in the therapy; identification of what point the resistance comes at can be an important indicator of the patient's unconscious patterns.
airway resistance the opposition of the tissues of the air passages to air flow: the mouth-to-alveoli pressure difference divided by the rate of air flow. Symbol RA or RAW.
androgen resistance resistance of target organs to the action of androgens, resulting in any of a spectrum of defects from a normal male phenotype in which men have normal genitalia but infertility to complete androgen resistance in which the individual has a female phenotype. Complete androgen resistance is an extreme form of male pseudohermaphroditism in which the individual is phenotypically female but is of XY chromosomal sex; there may be rudimentary uterus and tubes, but the gonads are typically testes, which may be abdominal or inguinal in position. Called also testicular feminization and testicular feminization syndrome. Incomplete androgen resistance is any of various forms less than the complete type, manifested by a male phenotype with various degrees of ambiguous genitalia such as hypospadias and a small vaginal pouch, a hooded phallus, or a bifid scrotum that may or may not contain gonads.
drug resistance the ability of a microorganism to withstand the effects of a drug that are lethal to most members of its species.
insulin resistance see insulin resistance.
multidrug resistance (multiple drug resistance) a phenomenon seen in some malignant cell lines: cells that have developed natural resistance to a single cytotoxic compound are also resistant to structurally unrelated chemotherapy agents. Called also cross-resistance.
peripheral resistance resistance to the passage of blood through the small blood vessels, especially the arterioles.
pulmonary vascular resistance the vascular resistance of the pulmonary circulation; the difference between the mean pulmonary arterial pressure and the left atrial filling pressure divided by the cardiac output. Called also total pulmonary vascular resistance.
total peripheral resistance the vascular resistance of the systemic circulation: the difference between the mean arterial pressure and central venous pressure divided by the cardiac output.
total pulmonary resistance (total pulmonary vascular resistance) pulmonary vascular resistance.
vascular resistance the opposition to blood flow in a vascular bed; the pressure drop across the bed divided by the blood flow, conventionally expressed in peripheral resistance units. Symbol R or R.

to·tal pe·riph·er·al re·sis·tance (TPR),

the total resistance to flow of blood in the systemic circuit; the quotient produced by dividing the mean arterial pressure by the cardiac minute-volume.

pe·riph·er·al re·sis·tance

(pĕr-if'ĕr-ăl rĕ-zis'tăns)
Resistance to blood flow through arterioles and capillaries.
References in periodicals archive ?
Acute cardiovascular responses that alter the subjects' hemodynamics are the likely cause along with the decrease in total peripheral resistance, which is a primary contributor (8).
Therefore the mean pressure was controlled by the peripheral resistance part ((6), (7)) in Figure 1(b).
Arterial theft after arteriovenous fistulas is a frequent phenomenon in diabetic patients due to the vascular complications of diabetes which limit the ability of the arteries to relax in order to reduce peripheral resistance and increase blood flow distal to the anastomosis.
Additionally, minoxidil treatment had no effect on salt intake or mean arterial pressure in support of our hypothesis that the development of hypertension is not affected by total peripheral resistance. This study shows that sodium intake plays an important role in the determination of the magnitude of rise in mean arterial blood pressure in DOCA-salt hypertensive rats.
Because active recovery involves rhythmical contraction of exercising muscles irrespective of intensity, it is likely that the effect of the muscle pump influenced peripheral resistance and venous return, such that a similarly high SV (compared with the exercise intervals) was maintained.
A drop in peripheral resistance has been reported during recovery from aerobic activity and resistance exercise [2,3,8,19].
Peripheral resistance is described as blood flow resistance within blood vessels, primarily affected by blood vessel diameter (Guyton & Hall, 2000).
Obesity and diabetes are closely related with the former causing increased peripheral resistance of insulin.
While there is no significant change in parameters except heart rate and urine magnesium in cases with GRTH, these markers change in TSHoma as there is no peripheral resistance (9).
In a subgroup of 5 patients tested, peripheral vascular resistances were 2,283 before treatment and 1,627 dyne s cm-5 after treatment, thus indicating a clear reduction in peripheral resistance by CoQ-10.
The combination of decreasing intravascular volume, cardiac output, vascular tone and peripheral resistance makes fluid removal a difficult clinical challenge for dialysis clinicians (Straver, 2006).
At the doses selected, CK-2018448 and amlodipine similarly increased cardiac output and similarly reduced mean arterial pressure and total peripheral resistance.