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Internal Medicine

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62 papers 100 to 500 followers
Andrew McDonald
No abstract text is available yet for this article.
2016: BMJ: British Medical Journal
John H Boyd, Demetrios Sirounis
PURPOSE OF REVIEW: It has recently become evident that administration of intravenous fluids following initial resuscitation has a greater probability of producing tissue edema and hypoxemia than of increasing oxygen delivery. Therefore, it is essential to have a rational approach to assess the adequacy of volume resuscitation. Here we review passive leg raising (PLR) and respiratory variation in hemodynamics to assess fluid responsiveness. RECENT FINDINGS: The use of ultrasound enhances the clinician's ability to detect and predict fluid responsiveness, whereas enthusiasm for this modality must be tempered by recent evidence that it is only reliable in apneic patients...
October 2016: Current Opinion in Critical Care
John P Walsh
Serum thyroid-stimulating hormone (TSH) testing is the best screening tool for thyroid dysfunction. When TSH levels are in the reference range, additional tests such as free thyroxine, free triiodothyronine or thyroid antibodies rarely add value, except in patients with pituitary disease, when TSH is unreliable. Overt hypothyroidism and subclinical hypothyroidism with TSH levels > 10 mU/L can be treated without further investigation. The health impact of subclinical hypothyroidism with mildly elevated levels of TSH (4-10 mU/L) remains uncertain, particularly in older people; treatment or observation are reasonable options...
August 15, 2016: Medical Journal of Australia
Jeffrey A Kraut, Nicolaos E Madias
Mortality rates associated with severe lactic acidosis (blood pH<7.2) due to sepsis or low-flow states are high. Eliminating the triggering conditions remains the most effective therapy. Although recommended by some, administration of sodium bicarbonate does not improve cardiovascular function or reduce mortality. This failure has been attributed to both reduction in serum calcium concentration and generation of excess carbon dioxide with intracellular acidification. In animal studies, hyperventilation and infusion of calcium during sodium bicarbonate administration improves cardiovascular function, suggesting that this approach could allow expression of the positive aspects of sodium bicarbonate...
September 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
Anthony Lopez, Patrice Cacoub, Iain C Macdougall, Laurent Peyrin-Biroulet
Anaemia affects roughly a third of the world's population; half the cases are due to iron deficiency. It is a major and global public health problem that affects maternal and child mortality, physical performance, and referral to health-care professionals. Children aged 0-5 years, women of childbearing age, and pregnant women are particularly at risk. Several chronic diseases are frequently associated with iron deficiency anaemia--notably chronic kidney disease, chronic heart failure, cancer, and inflammatory bowel disease...
February 27, 2016: Lancet
Jeff D Williamson, Mark A Supiano, William B Applegate, Dan R Berlowitz, Ruth C Campbell, Glenn M Chertow, Larry J Fine, William E Haley, Amret T Hawfield, Joachim H Ix, Dalane W Kitzman, John B Kostis, Marie A Krousel-Wood, Lenore J Launer, Suzanne Oparil, Carlos J Rodriguez, Christianne L Roumie, Ronald I Shorr, Kaycee M Sink, Virginia G Wadley, Paul K Whelton, Jeffrey Whittle, Nancy F Woolard, Jackson T Wright, Nicholas M Pajewski
IMPORTANCE: The appropriate treatment target for systolic blood pressure (SBP) in older patients with hypertension remains uncertain. OBJECTIVE: To evaluate the effects of intensive (<120 mm Hg) compared with standard (<140 mm Hg) SBP targets in persons aged 75 years or older with hypertension but without diabetes. DESIGN, SETTING, AND PARTICIPANTS: A multicenter, randomized clinical trial of patients aged 75 years or older who participated in the Systolic Blood Pressure Intervention Trial (SPRINT)...
June 28, 2016: JAMA: the Journal of the American Medical Association
Richard H Sterns, Marvin Grieff, Paul L Bernstein
Treatment options for hyperkalemia have not changed much since the introduction of the cation exchange resin, sodium polystyrene sulfonate (Kayexalate, Covis Pharmaceuticals, Cary, NC), over 50 years ago. Although clinicians of that era did not have ready access to hemodialysis or loop diuretics, the other tools that we use today-calcium, insulin, and bicarbonate-were well known to them. Currently recommended insulin regimens provide too little insulin to achieve blood levels with a maximal kalemic effect and too little glucose to avoid hypoglycemia...
March 2016: Kidney International
Mark S Riddle, Herbert L DuPont, Bradley A Connor
Acute diarrheal infections are a common health problem globally and among both individuals in the United States and traveling to developing world countries. Multiple modalities including antibiotic and non-antibiotic therapies have been used to address these common infections. Information on treatment, prevention, diagnostics, and the consequences of acute diarrhea infection has emerged and helps to inform clinical management. In this ACG Clinical Guideline, the authors present an evidence-based approach to diagnosis, prevention, and treatment of acute diarrhea infection in both US-based and travel settings...
May 2016: American Journal of Gastroenterology
Peter Gibson, Gang Wang, Lorcan McGarvey, Anne E Vertigan, Kenneth W Altman, Surinder S Birring
BACKGROUND: Unexplained chronic cough (UCC) causes significant impairments in quality of life. Effective assessment and treatment approaches are needed for UCC. METHODS: This systematic review of randomized controlled trials (RCTs) asked: What is the efficacy of treatment compared with usual care for cough severity, cough frequency, and cough-related quality of life in patients with UCC? Studies of adults and adolescents aged > 12 years with a chronic cough of > 8 weeks' duration that was unexplained after systematic investigation and treatment were included and assessed for relevance and quality...
January 2016: Chest
Michael Auerbach, John W Adamson
It is estimated that one-third of the world's population is anemic, the majority being due to iron deficiency (ID). In adults, ID is associated with fatigue in the absence of anemia, restless legs syndrome, pica and, in neonates, delayed growth and development. In adolescents, ID is associated with decrements in learning and behavioral abnormalities. In the absence of a clear cause, search for a source of bleeding is indicated. No single test is diagnostic of ID unless the serum ferritin is low or the percent transferrin saturation is low with an elevated total iron binding capacity...
January 2016: American Journal of Hematology
Sonja A Rasmussen, Denise J Jamieson, Margaret A Honein, Lyle R Petersen
Summary. The Zika virus has spread rapidly in the Americas since its first identification in Brazil in early 2015. Prenatal Zika virus infection has been linked to adverse pregnancy and birth outcomes, most notably microcephaly and other serious brain anomalies. To determine whether Zika virus..
May 19, 2016: New England Journal of Medicine
Ahmed Hassaan Qavi, Rida Kamal, Robert W Schrier
Diuretics play significant role in pharmacology and treatment options in medicine. This paper aims to review and evaluate the clinical use of diuretics in conditions that lead to fluid overload in the body such as cardiac failure, cirrhosis, and nephrotic syndrome. To know the principles of treatment it is essential to understand the underlying pathophysiological mechanisms that cause the need of diuresis in the human body. Various classes of diuretics exist, each having a unique mode of action. A systemic approach for management is recommended based on the current guidelines, starting from thiazides and proceeding to loop diuretics...
2015: International Journal of Nephrology
Jasvinder A Singh, Kenneth G Saag, S Louis Bridges, Elie A Akl, Raveendhara R Bannuru, Matthew C Sullivan, Elizaveta Vaysbrot, Christine McNaughton, Mikala Osani, Robert H Shmerling, Jeffrey R Curtis, Daniel E Furst, Deborah Parks, Arthur Kavanaugh, James O'Dell, Charles King, Amye Leong, Eric L Matteson, John T Schousboe, Barbara Drevlow, Seth Ginsberg, James Grober, E William St Clair, Elizabeth Tindall, Amy S Miller, Timothy McAlindon
OBJECTIVE: To develop a new evidence-based, pharmacologic treatment guideline for rheumatoid arthritis (RA). METHODS: We conducted systematic reviews to synthesize the evidence for the benefits and harms of various treatment options. We used the Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology to rate the quality of evidence. We employed a group consensus process to grade the strength of recommendations (either strong or conditional)...
January 2016: Arthritis & Rheumatology
Mark S Link, Lauren C Berkow, Peter J Kudenchuk, Henry R Halperin, Erik P Hess, Vivek K Moitra, Robert W Neumar, Brian J O'Neil, James H Paxton, Scott M Silvers, Roger D White, Demetris Yannopoulos, Michael W Donnino
No abstract text is available yet for this article.
November 3, 2015: Circulation
Stephen M Hagberg, Finbar Woitalla, Paul Crawford
PURPOSE: Hospital admissions for chest pain are frequent and costly. The use of objective criteria to determine the need for hospitalization may save money. Here we compare the 2002 American College of Cardiology/American Heart Association (ACC/AHA) guidelines for the management of patients with unstable angina and nonST-segment elevation myocardial infarction to clinical judgment as diagnostic tests to predict which patients with chest pain will develop positive cardiac troponin-I. METHODS: Researchers conducted a retrospective chart review of patients admitted to a military community hospital for chest pain over a 2-year period...
March 2008: Journal of the American Board of Family Medicine: JABFM
Nicola Semeraro, Concetta T Ammollo, Fabrizio Semeraro, Mario Colucci
Coagulopathy is common in acute sepsis and may range from subclinical activation of blood coagulation (hypercoagulability), which may contribute to venous thromboembolism, to acute disseminated intravascular coagulation, characterized by widespread microvascular thrombosis and consumption of platelets and coagulation proteins, eventually causing bleeding. The key event underlying this life-threatening complication is the overwhelming inflammatory host response to the pathogen leading to the overexpression of inflammatory mediators...
September 2015: Seminars in Thrombosis and Hemostasis
Ayalew Tefferi, Tiziano Barbui
Bone marrow (BM) morphologic features remain the cornerstone of diagnosis in both essential thrombocythemia (ET) and polycythemia vera (PV). In addition, recently discovered mutations, such as JAK2, CALR, and MPL, have proven useful in facilitating the diagnostic process. A JAK2 mutation is expected in PV, and its absence makes the diagnosis unlikely. However, JAK2 mutations also occur in about 60% of patients with ET, which underlines the need for BM examination in distinguishing JAK2-mutated ET from PV when the hemoglobin/hematocrit level is diagnostically equivocal (ie, as in "masked" PV)...
September 2015: Mayo Clinic Proceedings
Isabel S Bazan, Wassim H Fares
Pulmonary hypertension (PH) is a hemodynamic and pathophysiologic state that can be found in multiple conditions with associated symptoms of dyspnea, decreased exercise tolerance, and progression to right heart failure. The World Health Organization has classified PH into five groups. The first group is pulmonary arterial hypertension (PAH), which can be idiopathic, heritable, due to drugs and toxins, or associated with conditions such as connective tissue diseases, congenital heart disease, portal hypertension, and others...
2015: Therapeutics and Clinical Risk Management
Tomer Avni, Adi Lador, Shaul Lev, Leonard Leibovici, Mical Paul, Alon Grossman
OBJECTIVE: International guidelines recommend dopamine or norepinephrine as first-line vasopressor agents in septic shock. Phenylephrine, epinephrine, vasopressin and terlipressin are considered second-line agents. Our objective was to assess the evidence for the efficiency and safety of all vasopressors in septic shock. METHODS: Systematic review and meta-analysis. We searched electronic database of MEDLINE, CENTRAL, LILACS and conference proceedings up to June 2014...
2015: PloS One
Joseph A Vassalotti, Robert Centor, Barbara J Turner, Raquel C Greer, Michael Choi, Thomas D Sequist
A panel of internists and nephrologists developed this practical approach for the Kidney Disease Outcomes Quality Initiative to guide assessment and care of chronic kidney disease (CKD) by primary care clinicians. Chronic kidney disease is defined as a glomerular filtration rate (GFR) <60 mL/min/1.73 m(2) and/or markers of kidney damage for at least 3 months. In clinical practice the most common tests for CKD include GFR estimated from the serum creatinine concentration (eGFR) and albuminuria from the urinary albumin-to-creatinine ratio...
February 2016: American Journal of Medicine
2015-10-06 01:17:29
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