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| | Postoperative |
 | | Sympathetic nerve stimulation increases pulmonary vascular resistance, and is responsible for the reflex sympathetic pulmonary vasoconstriction that follows distention of the main pulmonary artery. | | | In the face of increased pulmonary vascular resistance and systemic hypotension, cerebral perfusion pressure may decline to a level that may lead to neurologic ischemia and injury. | | | This latter reflex is particularly strong in the muscularized resistance vessels of the pulmonary circulation of an infant when compared to adults, and may have significant pathophysiological implications in pulmonary hypertensive crises. |
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http://www.pediheart.org/practitioners/principals/postop.htm
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| | Pulmonary Vascular Disease |
| | Pulmonary thromboendarterectomy is a surgical technique for treating pulmonary hypertension caused by unresolved pulmonary embolism. | | | CONCLUSIONS: Preexisting increased pulmonary blood flow alters the response of the pulmonary circulation to hypothermic CPB; the increase in pulmonary vascular resistance induced by CPB is augmented in lambs with increased pulmonary blood flow. | | | The purpose of the present study was threefold: to characterize the changes in pulmonary vascular resistance and vascular reactivity induced by hypothermic CPB; to investigate the effects of preexisting increased pulmonary blood flow on these changes; and to better define the role of endothelin 1 in the pathogenesis of post-CPB pulmonary hypertension. |
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http://www.pediheart.org/searches/topic/pvod.htm
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| | PERSISTENT PULMONARY HYPERTENSION OF THE NEWBORN |
| | Abnormal responsiveness of the pulmonary vasculature to hypoxia with an inability to relax after the stimulus for vasoconstriction is removed, i.e. | | | Persistent pulmonary hypertension of the newborn is a cardiopulmonary disorder characterized by systemic arterial hypoxemia secondary to elevated pulmonary vascular resistance with resultant shunting of pulmonary blood flow to the systemic circulation. | | | Persistent pulmonary hypertension of the newborn (PPHN) is the result of elevated pulmonary vascular resistance to the point that venous blood is diverted to some degree through fetal channels (i. |
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http://neonatal.peds.washington.edu/NICU-WEB/pphn.stm
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| | Control and Management of Pulmonary Vascular Tone in the Newborn. Child's Doctor Spring 2000. |
| | Pulmonary hypertension frequently occurs in infants with congenital diaphragmatic hernia. | | | This may in part be due to the lack of echocardiographic evidence for pulmonary hypertension in several of the infants studied. | | | Vasoconstriction in response to low oxygen tension is at least partially responsible for the high pulmonary vascular resistance of the fetus. |
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http://www.childsdoc.org/spring2000/pulvasctone.asp
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| | Pulmonary hypertension - definition of Pulmonary hypertension in Encyclopedia |
| | Pulmonary Hypertension (http://www.hopkins-lungs.org/programs/ph/) from the Division of Pulmonary and Critical Care Medicine of the Johns Hopkins School of Medicine (http://www.hopkins-lungs.org/). | | | Definite pulmonary hypertension is present when mean pressures at rest exceed 25 mmHg. | | | Expression of Human Herpesvirus 8 in Primary Pulmonary Hypertension. |
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http://encyclopedia.laborlawtalk.com/Pulmonary_hypertension
(1056 words)
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| | All-Net ventricular septal defects |
| | In this situation, the primary determinant of VSD shunt flow is the pulmonary vascular resistance. | | | When the pulmonary vascular resistance starts to rise and/or the total pulmonic blood flow is greater than twice the systemic flow, the defect will be need to be closed surgically. | | | The primary physiologic variable that determines the physiologic state of the patent is the nature of the pulmonary vascular resistance. |
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http://pedsccm.wustl.edu/All-Net/english/cardpage/operate/vsd/VSD-KUMC.html
(1288 words)
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| | Vascular resistance |
| | Vascular resistance is a term used to define the resistance to flow that must be overcome to push blood through the circulatory system. | | | The basic tenet of calculating resistance is that flow is equal to driving pressure divided by resistance. | | | The major determinant of vascular resistance is small arteriolar (known as resistance arterioles) tone. |
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http://www.sciencedaily.com/encyclopedia/vascular_resistance
(576 words)
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| | ipedia.com: Ductus arteriosus Article |
| | Decreased pulmonary vascular resistance increases pulmonary blood flow while pulmonary vascular pressure falls below aortic pressure. | | | Failure of a child's DA to close after birth results in a condition called patent ductus arteriosus. | | | During fetal development, this shunt protects the lungs from being overworked and allows the right ventricle to strengthen. |
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http://www.ipedia.com/ductus_arteriosus.html
(298 words)
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| | N-acetylcysteine - Vitacost |
| | There are also indications that cardiopulmonary physiology is favorably affected by such therapy including improvements in chest radiograph edema scores, pulmonary vascular resistance, static compliance, oxygen delivery, and oxygen consumption. | | | Although many antioxidants have been investigated in in vitro systems and in animal models, only some are at the developmental stage, or safe for clinical trials. | | | We hypothesized that the partial benefit derived from granulocyte depletion was due to the effective removal of a major source of oxygen radicals. |
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http://www.vitacost.com/science/medstudies.cfm?litid=23
(1785 words)
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| | Atrial septal defect |
| | This involves placing a catheter in the venous system of the heart andmeasuring pressures and oxygen saturations in the SVC, IVC, rightatrium, right ventricle, pulmonary artery, and in the wedge position. | | | The right ventricle will be forcedto generate higher pressures to try to overcome the pulmonary hypertension. | | | Those that perform the procedure believe that they arepreventing long-term deterioration in cardiac function and preventing progression of pulmonary hypertension. |
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http://www.therfcc.org/atrial-septal-defect-8111.html
(2329 words)
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| | Pulmonary Vascular Resistance |
| | Your PVR is equal to about 70.1 (dyne*sec)/cm5. | | | I also do not have any lung disease that could account for the pulmonary pressures. | | | Recently, I had a right heart catheterization because I had high pulmonary artery pressures with a drop in pulse oximetry with a stress echocardiogram. |
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http://www.medhelp.org/forums/cardio/messages/34576a.html
(1157 words)
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| | AllRefer Health - Changes in the Newborn at Birth (Birth - Changes in the Newborn) |
| | Once the cord is cut and the baby takes his first breath, a number of changes occur in the newborn's vascular system. | | | There are some structures in the fetal vascular system that make this type of blood movement possible: | | | There is also an increase in the blood flow resistance of the body's vessels. |
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http://health.allrefer.com/health/changes-in-the-newborn-at-birth-info.html
(852 words)
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| | THE MERCK MANUAL, Sec. 19, Ch. 261, Congenital Anomalies |
| | No specific therapies for pulmonary vascular disease exist, although research is ongoing for the use of such drugs as prostacyclin. | | | As pulmonary vascular resistance approaches and equals systemic vascular resistance, left-to-right shunting is decreased, and right-to-left shunting leads to systemic desaturation and visible cyanosis. | | | Pulmonary vascular disease may be a limiting factor in the care of infants and children with congenital defects (eg, ventricular septal defect, atrioventricular canal defect, truncus arteriosus) in which high-pressured (ventricular, aortic-pulmonary) shunts occur and may exist alone as primary pulmonary hypertension. |
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http://www.merck.com/pubs/mmanual/section19/chapter261/261c.htm
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| | EVALUATION AND MANAGEMENT OF CHILDREN WITH END-STAGE CARDIOMYOPATHY AND ELEVATED PULMONARY VASCULAR RESISTANCE |
| | The capillary wedge pressure, systemic vascular resistance, and heart rate did not change significantly. | | | We hypothesized that the combination of a phosphodiesterase inhibitor and a ß-agonist may provide cardiac support and pulmonary vasodilation in such patients, and that the response to the therapy may help to differentiate patients requiring heart and lung transplant (HLT) from those who could do well with HT alone. | | | We conclude that therapy with milrinone and dobutamine has beneficial effects on both cardiac performance and pulmonary vascular resistance in children with CM and elevated Rp, and allow successful HT in some children who might otherwise be considered inappropriate candidates. |
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http://www.a-s-t.org/library/abstracts99/713.htm
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| | Pulmonary hypertension: treatment of high pulmonary vascular resistance |
| | This drug, which blocks endothelin receptors, is currently the most promising approach. | | | This presumably accounts for its ability to reduce pulmonary pressure and vascular resistance in patients with pulmonary hypertension. | | | Multi-centre studies have compared the effect of bosentan (125-250 mg twice daily) or placebo added to conventional therapy in patients with severe pulmonary hypertension. |
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http://www.tg.com.au/etg_demo/tgc/cvg/77.htm
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| | Pulmonary vascular resistance |
| | Pulmonary Embolism Article by Craig Feied, MD, detailing the background, diagnosis, and treatment of pulmonary embolism. | | | Best Practice Medicine - Pulmonary Hypertension Praxis.md's guide to the background, diagnosis, treatment, and prognosis of this disease. | | | American Heart Association: Pulmonary Hypertension Brief description of the cause and treatment of this disease. |
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http://www.serebella.com/encyclopedia/article-Pulmonary_vascular_resistance.html
(280 words)
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| | CHEST: Pulmonary vascular resistance in emphysema |
| | We speculated that this group consists of subjects with the clinical and radiographic features ascribed to type A chronic obstructive pulmonary disease (COPD-A).[6] Such patients have less severe disturbances in [unkeyable]A/[unkeyable]. | | | To assess the hemodynamic effects of pulmonary microvasculature disruption in emphysema, we examined resting pulmonary hemodynamics and lung function in 12 carefully identified patients with type A chronic obstructive pulmonary disease. | | | Respiratory failure with reversible hypertension may supervene as the result of acute respiratory infection and/or respiratory muscle failure, but an irreversible and progressive component of increased pulmonary vascular resistance probably results from ongoing anatomic restriction of the bed. |
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http://www.findarticles.com/p/articles/mi_m0984/is_n3_v105/ai_14998952
(885 words)
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| | Heart Transplantation, Cincinnati Children's Hospital Medical Center |
| | Temporary right ventricular dysfunction may occur secondary to elevations in pulmonary vascular resistance that many recipients may have as a result of longstanding heart failure. | | | If the pulmonary resistance is significantly elevated or the heart function too poor on its own, patients may remain on intravenous medications in the hospital while awaiting transplantation. | | | Mechanical ventricular support may also be employed to support a patient awaiting transplantation. |
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http://www.cincinnatichildrens.org/health/info/heart/procedure/transplant.htm
(1207 words)
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| | Periodic Table |
| | Noninvasive estimation of pulmonary vascular resistance by stroke index measuring with an inert gas rebreathing technique. | | | Improved arc stability with [O.sub.2] dose to inert gas: improved arc stability and hence weld quality and productivity are achieved by the addition of around 0.03% of oxygen to the inert shielding gas when arc welding aluminium.(FABRICATION) (Aluminium International Today) |
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http://www.infoplease.com/periodictable.php?group=I
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| | acid-base indicators on Encyclopedia.com |
| | Using Acid-Base Reagent Problems as a High School Science Research Activity.(student experiment for testing the influence of chlorine on pH indicator) | | | The influence of respiratory acid-base status on adult pulmonary vascular resistance before and after cardiopulmonary bypass. | | | Five rules, and how they simplify complex cases. |
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http://www.encyclopedia.com/html/X/X-acidbase.asp
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