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https://www.readbyqxmd.com/read/29928642/pathophysiology-and-diagnosis-of-pulmonary-hypertension-due-to-left-heart-disease
#1
REVIEW
Athanasios Charalampopoulos, Robert Lewis, Peter Hickey, Charlotte Durrington, Charlie Elliot, Robin Condliffe, Ian Sabroe, David G Kiely
Pulmonary hypertension due to left heart disease (PH-LHD) is the most common type of pulmonary hypertension, although an accurate prevalence is challenging. PH-LHD includes PH due to systolic or diastolic left ventricular dysfunction, mitral or aortic valve disease and congenital left heart disease. In recent years a new and distinct phenotype of "combined post-capillary and pre-capillary PH," based on diastolic pulmonary gradient and pulmonary vascular resistance, has been recognized. The roles of right ventricular dysfunction and pulmonary vascular compliance in PH-LHD have also been elucidated recently and they appear to have significant clinical implications...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29928186/hypothermia-related-acute-pancreatitis
#2
Kyawzaw Lin, Emmanuel Ofori, Aung Naing Lin, Sithu Lin, Thinzar Lin, Ameer Rasheed, Viswanath Vasudevan, Madhavi Reddy
Acute pancreatitis (AP) is an inflammatory disease presenting from mild localized inflammation to severe infected necrotic pancreatic tissue. In the literature, there are a few cases of hypothermia-induced AP. However, the association between hypothermia and AP is still a myth. Generally, mortality from acute pancreatitis is nearly 3-6%. Here, we present a 40-year-old chronic alcoholic female who presented with acute pancreatitis induced by transient hypothermia. A 40-year-old chronic alcoholic female was hypothermic at 81°F on arrival which was improved to 91...
May 2018: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/29925126/-preliminary-study-of-the-arm-equilibrium-pressure-to-predict-the-effect-of-fluid-challenge-on-urine-output-in-oliguric-intensive-care-unit-patients
#3
Z Y Xie, Z Y Zhang, Y Zhu, Z Wang
Objective: To evaluate whether arm equilibrium pressure (Parm) is helpful to predict the effect of fluid load in improving oliguria in intensive care unit(ICU) patients. Methods: Hemodynamically stable patients [mean artery pressure (MAP)>65 mmHg (1 mmHg=0.133 kPa), heart rate (HR)<120 beats/min, lactic acid<2 mmol/L] with urine output (UO)<0.5 ml·kg(-1)·h(-1) for 3 consecutive hours were enrolled. The fluid loading was performed by infusion of ringer's lactate 500 ml within 30 minute after baseline hemodynamic data were recorded...
June 1, 2018: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29898246/evaluation-of-pulse-pressure-variation-and-pleth-variability-index-to-predict-fluid-responsiveness-in-mechanically-ventilated-isoflurane-anesthetized-dogs
#4
Hiroki Sano, Joonbum Seo, Paul Wightman, Nick J Cave, Mike A Gieseg, Craig B Johnson, Paul Chambers
OBJECTIVE: To evaluate whether pulse pressure variation (PPV) and pleth variability index (PVI) are more accurate than central venous pressure (CVP) for predicting fluid responsiveness in mechanically ventilated isoflurane-anesthetized dogs after premedication with acepromazine. DESIGN: Prospective experimental trial. SETTING: University teaching hospital. ANIMALS: Twelve Harrier hound dogs. INTERVENTIONS: Each dog was anesthetized and had a fluid challenge performed...
June 13, 2018: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/29858432/what-is-the-evidence-base-for-fluid-resuscitation-in-acute-medicine
#5
Adam Seccombe, Elizabeth Sapey
Intravenous fluids are commonly prescribed but uncertainty remains about how to assess when fluids are required and how much to give, particularly in our multimorbid, polymedicated and ageing population. Furthermore, studies have noted that fluid resuscitation can be harmful even if clinical evidence of hypervolaemia is not present. Two recent guidelines have acknowledged a limited evidence base to guide fluid assessment. A recommended means to assess hypovolaemia includes assessment of fluid responsiveness...
June 2018: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/29851062/pre-operative-haemodynamic-monitoring-and-resuscitation-in-hip-fracture-patients-protocol-for-a-prospective-observational-study
#6
M Agerskov, H Sørensen, J Højlund, N H Secher, N B Foss
BACKGROUND: In a frail patient group often suffering from dehydration, hip fracture is potentially fatal partly because of the blood loss and thus deteriorated circulation. An important goal for haemodynamic monitoring and resuscitation is early detection of insufficient tissue perfusion. "The peripheral perfusion index" reflects changes in peripheral perfusion and blood volume. We hypothesize that hip fracture patients are hypovolaemic with poor peripheral perfusion and accordingly respond to controlled fluid resuscitation...
May 30, 2018: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29768341/the-plethysmographic-variability-index-does-not-predict-fluid-responsiveness-estimated-by-esophageal-doppler-during-kidney-transplantation-a-controlled-study
#7
Morgan Le Guen, Arnaud Follin, Etienne Gayat, Marc Fischler
Research is ongoing to find a noninvasive method of monitoring, which can predict fluid responsiveness in patients undergoing kidney transplantation.To compare the responses to fluid challenges with the Pleth Variability Index, a noninvasive dynamic index derived from plethysmographic variability (Radical 7 pulse oximeter; Masimo Corporation, Irvine, CA), and the esophageal Doppler, the criterion standard.Observational study.University hospital; study from May 2011 and May 2012.Forty-eight patients with end-renal function were included and 44 analyzed...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29764550/-predictive-value-of-central-venous-to-arterial-carbon-dioxide-partial-pressure-difference-for-fluid-responsiveness-in-septic-shock-patients-a-prospective-clinical-study
#8
Guangyun Liu, Huibin Huang, Hanyu Qin, Bin Du
OBJECTIVE: To evaluate the accuracy of central venous-to-arterial carbon dioxide partial pressure difference (Pcv-aCO2 ) before and after rapid rehydration test (fluid challenge) in predicting the fluid responsiveness in patients with septic shock. METHODS: A prospective observation was conducted. Forty septic shock patients admitted to medical intensive care unit (ICU) of Peking Union Medical College Hospital from October 2015 to June 2017 were enrolled. All of the patients received fluid challenge in the presence of invasive hemodynamic monitoring...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29762333/hemodynamic-shock-caused-by-tension-pneumoperitoneum-in-a-5-year-old-girl
#9
Marie-Sophie Zentar, Laureline Berteloot, Naziha Khen Dunlop, Olivier Bustarret, Bénédicte Pigneur, Gérard Cheron, François Angoulvant
Tension pneumoperitoneum is a relatively rare occurrence in the pediatric population. However, tension pneumoperitoneum is associated with significant morbidity and mortality if it is not promptly diagnosed and treated. A 5-year-old girl was admitted to emergency department with abdominal pain. She was in shock, and the radiograph film of the abdomen revealed a voluminous tension pneumoperitoneum. Aggressive fluid challenges were performed in intensive care followed by urgent laparotomy. Primary abdominal compartment due to trapped gas caused a decreased venous return and visceral perfusion...
May 14, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29728410/what-is-the-normal-haemodynamic-response-to-passive-leg-raise-a-study-of-healthy-volunteers
#10
Mohammed H Elwan, Ashraf Roshdy, Joseph A Reynolds, Eman M Elsharkawy, Salah M Eltahan, Timothy J Coats
OBJECTIVE: Passive leg raise (PLR) is used as self-fluid challenge to optimise fluid therapy by predicting preload responsiveness. However, there remains uncertainty around the normal haemodynamic response to PLR with resulting difficulties in application and interpretation in emergency care. We aim to define the haemodynamic responses to PLR in spontaneously breathing volunteers using a non-invasive cardiac output monitor, thoracic electrical bioimpedance, TEB (PLR-TEB). METHODS: We recruited healthy volunteers aged 18 or above...
May 4, 2018: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29721645/midazolam-increases-preload-dependency-during-endotoxic-shock-in-rabbits-by-affecting-venous-vascular-tone
#11
Jianxiao Chen, Tao Yu, Federico Longhini, Xiwen Zhang, Songqiao Liu, Ling Liu, Yi Yang, Haibo Qiu
BACKGROUND: Septic patients often require sedation in intensive care unit, and midazolam is one of the most frequently used sedatives among them. But the interaction between midazolam and septic shock is not known. The aim of this study is to investigate the effects of midazolam on preload dependency in an endotoxic shock model by evaluating systemic vascular tone and cardiac function. METHODS: Eighteen rabbits were randomly divided into three groups: Control group, MID1 group and MID2 group...
May 2, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29684655/effect-of-fluid-challenge-on-renal-resistive-index-after-major-orthopaedic-surgery-a-prospective-observational-study-using-doppler-ultrasonography
#12
Fabrice Ferré, Philippe Marty, Cédric Folcher, Matt Kurrek, Vincent Minville
BACKGROUND: A postoperative renal resistive index (RRI)>0.70 has the best threshold to early predict acute kidney injury (AKI). The response of RRI to a postoperative fluid challenge (FC) is unknown. The aim of our study was to assess the impact of a FC on RRI in suspected hypovolaemia patients after orthopaedic surgery. DESIGN: In this single-centre observational study, we prospectively screened 156 patients in the recovery room after having undergone a hip or knee replacement...
April 21, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29679768/comparison-of-proaqt-pulsioflex-%C3%A2-and-oesophageal-doppler-for-intraoperative-haemodynamic-monitoring-during-intermediate-risk-abdominal-surgery
#13
Grégoire Weil, Cyrus Motamed, Alexandre Eghiaian, Xavier Monnet, Stéphanie Suria
OBJECTIVE: To compare cardiac index (CI) between Proaqt/PulsioFlex® and oesophageal Doppler (OD) and the ability of the PulsioFlex® to track CI changes induced by fluid challenge and secondly to assess the impact of the time interval between two auto-calibrations of PulsioFlex® on the accuracy of the measured CI. METHODS: In a single hospital, 49 intermediate-risk oncologic abdominal surgery patients were included in an observational study. We measured the cardiac Index (CI) provided by OD and by the Proaqt/PulsioFlex® before and after internal calibration, which were performed randomly at specific intervals after the initial one (30, 60, 90 and 120min)...
April 18, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29664782/challenge-of-the-mini-fluid-challenge-filling-twice-without-creating-a-self-fulfilling-prophecy-design
#14
Simon Tilma Vistisen, Thomas W L Scheeren
No abstract text is available yet for this article.
May 2018: Anesthesiology
https://www.readbyqxmd.com/read/29651944/role-of-point-of-care-ultrasonography-for-management-of-sepsis-and-septic-shock
#15
Gentle Sunder Shrestha, Shrikanth Srinivasan
BACKGROUND: Sepsis and septic shock remain a major cause of morbidity and mortality globally. In recent years, outcome of patients with sepsis and septic shock has gradually improved, in part due to early recognition and timely appropriate management. Bedside physical examination can be of limited value to identify the source of infection and to decide appropriate management. Moreover, the clinical status of these patients can change rapidly, as a part of disease progression or in response to treatment or intervention...
April 12, 2018: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/29559180/fluid-challenge-predicts-clinical-worsening-in-pulmonary-arterial-hypertension
#16
Michele D'Alto, Yoshiki Motoji, Emanuele Romeo, Paola Argiento, Giovanni Maria Di Marco, Agostino Mattera Iacono, Antonello D'Andrea, Gaetano Rea, Paolo Golino, Robert Naeije
AIM: A fluid challenge with rapid saline infusion during right heart catheterization has been shown to be useful for the differential diagnosis between pre- and post-capillary pulmonary hypertension. The aim of this study was to evaluate the prognostic relevance of fluid challenge-induced changes in pulmonary hemodynamics in patients with pulmonary arterial hypertension (PAH). METHODS: Overall, 118 PAH patients (mean age 57 ± 15 years, 80 female) underwent hemodynamic measurements before and after rapid saline infusion (7 mL/kg in 10 min) and were followed up for 19 ± 4 months...
June 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29518407/aging-affects-isoproterenol-induced-water-drinking-astrocyte-density-and-central-neuronal-activation-in-female-brown-norway-rats
#17
Rachel N Hardy, Zinar D Simsek, Brandon Curry, Sheri L Core, Terry Beltz, Baojian Xue, Alan K Johnson, Robert L Thunhorst, Kathleen S Curtis
Age-dependent impairments in the central control of compensatory responses to body fluid challenges have received scant experimental attention, especially in females. In the present study, we found that water drinking in response to β-adrenergic activation with isoproterenol (30 μg/kg, s.c.) was reduced by more than half in aged (25 mo) vs. young (5 mo) ovariectomized female Brown Norway rats. To determine whether this age-related decrease in water intake was accompanied by changes in central nervous system areas associated with fluid balance, we assessed astrocyte density and neuronal activation in the SFO, OVLT, SON, AP and NTS of these rats using immunohistochemical labeling for GFAP and c-fos, respectively...
March 5, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29427013/assessment-of-fluid-responsiveness-in-spontaneously-breathing-patients-a-systematic-review-of-literature
#18
REVIEW
Renato Carneiro de Freitas Chaves, Thiago Domingos Corrêa, Ary Serpa Neto, Bruno de Arruda Bravim, Ricardo Luiz Cordioli, Fabio Tanzillo Moreira, Karina Tavares Timenetsky, Murillo Santucci Cesar de Assunção
Patients who increase stoke volume or cardiac index more than 10 or 15% after a fluid challenge are usually considered fluid responders. Assessment of fluid responsiveness prior to volume expansion is critical to avoid fluid overload, which has been associated with poor outcomes. Maneuvers to assess fluid responsiveness are well established in mechanically ventilated patients; however, few studies evaluated maneuvers to predict fluid responsiveness in spontaneously breathing patients. Our objective was to perform a systematic review of literature addressing the available methods to assess fluid responsiveness in spontaneously breathing patients...
February 9, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29424795/evaluation-of-vasopressin-for-vasoplegic-shock-in-patients-with-preoperative-left-ventricular-dysfunction-after-cardiac-surgery-a-propensity-score-analysis
#19
Yongqing Cheng, Tuo Pan, Min Ge, Tao Chen, Jiaxin Ye, Lichong Lu, Cheng Chen, Qiuyan Zong, Yi Ding, Dongjin Wang
PURPOSE: Postoperative vasoplegic shock after cardiac surgery seems to be a frequent complication with poor outcomes. We hypothesized that vasopressin may increase the risk of poor outcomes in patients with preoperative Left Ventricular Dysfunction (pLVD) rather than norepinephrine. The aim of this study was to assess whether vasopressin is superior to norepinephrine to improve outcomes in patients with pLVD after cardiac surgery. METHODS: This retrospective cohort study included 1,156 patients with postoperative vasoplegic shock (mean arterial pressure <65 mmHg resistant to fluid challenge and cardiac index >2...
February 7, 2018: Shock
https://www.readbyqxmd.com/read/29398109/long-term-dentin-remineralization-by-poly-amido-amine-and-rechargeable-calcium-phosphate-nanocomposite-after-fluid-challenges
#20
Kunneng Liang, Shimeng Xiao, Junling Wu, Jiyao Li, Michael D Weir, Lei Cheng, Mark A Reynolds, Xuedong Zhou, Hockin H K Xu
OBJECTIVE: Previous studies investigated short-term dentin remineralization; studies on long-term dentin remineralization after fluid challenges mimicking fluids in oral environment are lacking. The objective of this study was to develop a long-term remineralization method to via poly(amido amine) (PAMAM) and rechargeable composite containing nanoparticles of amorphous calcium phosphate (NACP) after fluid challenges for the first time. METHODS: NACP composite was immersed at pH 4 to exhaust its calcium (Ca) and phosphate (P) ions, and then recharged with Ca and P ions, to test the remineralization of the exhausted and recharged NACP composite...
April 2018: Dental Materials: Official Publication of the Academy of Dental Materials
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