By G. Mason. Southern University, Baton Rouge. 2018.
Laboratory findings • Anemia is usual but a normal or increased hemoglobin level may be fond in some patients • The white cell and platelet counts are frequently high at the time of presentation buy 500mg glycomet otc. Trephine biopsy may show a hypercellular marrow with an increase in reticulin-fibre pattern discount glycomet 500 mg on line; in other patients there is an increase in intercellular substance and variable collagen deposition 500 mg glycomet with visa. Introduction Leucocyte cytochemistry encompasses the techniques used to identify diagnostically useful enzymes or other substances in the cytoplasm of hemopoietic cells discount glycomet 500mg without a prescription. These techniques are particularly useful for the characterization of immature cells in the acute myeloid leukemias discount glycomet 500mg otc, and the identification of maturation 328 Hematology abnormalities in the myeloproliferative disorders buy glycomet 500 mg on line. The use of cytochemistry to characterize lymphoproliferative disorders has been largely superseded by immunological techniques. The results of cytochemical tests should always be interpreted in relation to Romanowsky stains and immunological techniques. Control blood or marrow slides should always be stained in parallel to assure the quality of the staining. The principal uses of cytochemistry are: • To characterize the blast cells in acute leukemias as myeloid. Staining can be enhanced by immersing the slides in copper sulphate or nitrate, but this is generally not required in normal diagnostic practice. The most primitive myeloblasts are negative, with granularly positively appearing progressively as they mature towards the promyelocyte stage. Promyelocytes and myelocytes are the most strongly staining cells in the granulocyte series, with positive (primary) granules packing the cytoplasm. Eosinophil granules stain strongly, and the large specific eosinophil granules are easily distinguished from neutrophil granules. Eosinophil granule peroxidase is distinct biochemically and immunologically from neutrophil peroxidase. When positive, the granules are smaller than in neutrophils and diffusely scattered throughout the cytoplasm. Sudan Black B 331 Hematology Sudan black B is a lipophilic dye that binds irreversibly to an undefined granule component in granulocytes, eosinophils and some monocytes. The only notable difference is in eosinophil granules, which have a clear core when stained with Sudan black B. Basophiles are generally not positive, but may show bright red/purple metachromatic staining of the granules. Although demonstrated as a granular reaction product in the cytoplasm, enzyme activity is associated with a poorly characterized intracytoplasmic membranous component distinct from primary or secondary granules. Other leucocytes are generally negative, but rare cases of lymphoid malignancies show cytochemically demonstrable activity. Early methods of demonstrating alkaline phosphatase relied on the use of glycerophosphate or other phosphomonoesters as the substrate at alkaline pH, with a final black reaction product of lea sulphide. These methods use substituted naphthols as the substrate, and it is the liberated naphthol rather than phosphate that is utilized to combine with the azo-dye to give the final reaction product. The intensity of reaction product in neutrophils varies from negative to strongly positive, with coarse granules filling the cytoplasm and overlying the nucleus. An overall score is obtained by assessing the stain intensity in 100 333 Hematology consecutive neutrophils, with each neutrophil scored on a scale of 1-4 as follows: 0 Negative, no granules 1 Occasional granules scattered in the cytoplasm 2 Moderate numbers of granules 3 Numerous granules 4 Heavy positively with numerous coarse granules crowding the cytoplasm, frequently overlying the nucleus The overall possible score will range between 0 and 400. Reported normal ranges show some variations, owing possibly in part to variations in scoring criteria and methodology. Published normal ranges illustrate the need for establishing a normal range in any one laboratory: Hayhoe & Quaglino = 14-100 (mean 46); Kaplow = 13 -160 (mean 61); Rutenberg et al=37-98 (mean 68); Bendix-Hansen & Helleberg-Rasmussen=11-134 (mean 48) The scoring system described by Bendix-Hansen & Helleberg-Rasmussen differs slightly in emphasis from the others, but gives similar results. Newborn babies, children and pregnant women have high scores, and premenopausal women have, on average, scores one-third higher than men. Acid Phosphatase Reaction Cytochemically demonstrable acid phosphates is 335 Hematology ubiquitous in hemopoietic cells. The pararosaniline method given below, modified from Goldberg & Barka, is recommended for demonstrating positively in T lymphoid cells. Interpretation of the result The reaction product is red with a mixture of granular and diffuses positively.
Persistence of acute rheumatic fever in the intermountain area of the United States purchase glycomet 500 mg line. Diagnosis of rheumatic fever and assessment of valvular disease using echocardiography The advent of echocardiography Echocardiography is an imaging technique that rapidly evolved and matured purchase glycomet 500 mg on-line, and currently it is a key component in the diagnosis of heart disease proven glycomet 500 mg. The technique includes transthoracic buy cheap glycomet 500mg, transesophageal and intracardiac echocardiography (1–3) discount glycomet 500mg otc. Three-dimensional and even four-dimensional echocardiography have also been developed (4) order 500 mg glycomet fast delivery. To diagnose rheumatic carditis and assess valvular disease, however, M-mode, two-dimensional (2D), 2D echo-Doppler and colour ﬂow Doppler echocardiography are sufﬁciently sensitive and provide speciﬁc information not previously available. Of these, M-mode echocardiography provides parameters for assessing ventricular func- tion, while 2D echocardiography provides a realistic real-time image of anatomical structure. Two-dimensional echo-Doppler and colour ﬂow Doppler echocardiography are most sensitive for detecting abnormal blood ﬂow and valvular regurgitation. The use of 2D echo-Doppler and colour ﬂow Doppler echo- cardiography may prevent the overdiagnosis of a functional murmur as valvular heart disease (5). Similarly, the overinterpretation of physiological or trivial valvular regurgitation may result in a misdiag- nosis of iatrogenic valvular disease (6, 7). Echocardiography and physiological valvular regurgitation Two-dimensional echo-Doppler and colour ﬂow Doppler echo- cardiography have permitted all audible valvular regurgitation to be detected, even the physiological, functional, trivial or so-called “nor- mal” ﬂow disturbance that may occur when normal valves close (7– 11). Utilizing colour ﬂow Doppler echocardiography, physiological regurgitation is characteristically localized at the region immediately below or above the plane of valve leaﬂets (or within 1. The ap- pearance of physiological valvular regurgitation in healthy subjects with structurally normal hearts varies with the devices, sensitivity, penetration power and techniques used, with changes in systemic and pulmonary vascular resistance and pressure, and with body habitus and age (3, 6, 7, 9, 12). The prevalence of physiological valvular regurgitation in normal people varied by valve: mitral regurgitation was present in 2. In 25% of patients with acute rheumatic carditis, focal nodules were found on the bodies and tips of the valve leaﬂets, but the nodules disappeared on follow-up (17). Congestive heart failure in patients with rheumatic carditis appears to be invariably associated with severe mitral and/or aortic valve insufﬁ- ciency (16, 17). Myocardial factor or myocardial dysfunction ap- peared not to be the main cause of congestive heart failure, as the percent fractional shortening of the left ventricle in such patients with heart failure has been found to be normal, and they improved rapidly after surgery (16, 17, 19). The pathogenesis of severe mitral regurgita- tion has been found to be owing to a combination of valvulitis, mitral annular dilatation and leaﬂet prolapse, with or without chordal elon- gation (16, 17). Chordal rupture occurs in some patients with rheu- matic carditis requiring an emergency mitral valve repair (14, 20). Echo-Doppler and colour ﬂow Doppler imaging may also provide supporting evidence for a diagnosis of rheumatic carditis in patients with equivocal murmur, or with polyarthritis and equivocal minor manifestations (10, 17). Classiﬁcation of the severity of valvular regurgitation using echocardiography Traditionally, the severity of valvular regurgitation has been classiﬁed according to a ﬁve-point scale (0+, 1+, 2+, 3+ and 4+), based on the echocardiographic ﬁndings with angiocardiographic correlations (21– 24). But based on colour ﬂow Doppler mapping, it has been suggested that the severity of mitral and aortic valvular regurgitation may be classiﬁed into a six-point scale as follows (21–24): 0: Nil, including physiological or trivial regurgitant jet <1. Diagnosis of rheumatic carditis of insidious onset In patients with rheumatic carditis of insidious onset, or indolent carditis, as deﬁned in the 1992 update of the Jones criteria (25), echocardiography serves to establish the diagnosis of mitral and/or aortic insufﬁciency, after excluding the non-rheumatic causes, such as congenital mitral valve cleft and/or anomalies, degenerative ﬂoppy mitral valve, bicuspid aortic valve; and acquired valvular diseases due to infective endocarditis, systemic disease and others. Silent, but signiﬁcant, very mild (grade 0+) mitral and/or aortic valvular regurgi- tation may be transient or persistent, even for years (26). In cases of indolent rheumatic carditis, the cardiomegaly and valvular regurgita- tion may improve, and valve competency may even be restored (26, 27). The use of echocardiography to assess chronic valvular heart disease Two-dimensional echocardiography can display the anatomical pathology of the mitral, aortic, tricuspid and (less well) pulmonary valves, and the valvular annulus and apparatus can be delineated.
General Investigations and specific if required according to the status of the health of the patient generic glycomet 500 mg fast delivery. Treatment: Conservative management of fractures in children in spica cast or with skeletal traction generic glycomet 500 mg overnight delivery, Kuntscher’s nail for isthmic fractures purchase 500mg glycomet with visa, Interlocking Nailing in comminuted fractures cheap glycomet 500 mg, Plating for lower third fractures buy glycomet 500mg lowest price, Plating of shaft femur fracture in children proven glycomet 500mg. Investigations: X-rays of the part and of other areas if required, x-ray of pelvis with both hips is must. General Investigations and specific if required according to the presence of any co-morbidity. Introduction /description Lower leg fractures include fractures of the tibia and fibula. Fractures of the tibia generally are associated with fibula fracture, because the force is transmitted along the interosseous membrane to the fibula. The skin and subcutaneous tissue are very thin over the anterior and medial tibia and as a result of this; a significant number of fractures to the lower leg are open. Fractures of the tibia can involve the tibial plateau, tubercle, shaft, and plafond. Mode of injury Tibial plateau fractures occur from axial loading with valgus or varus forces, such as in a fall from a height or collision with the bumper of a car. Mechanisms of injury for tibia-fibula fractures can be divided into 2 categories: 58 Low-energy injuries such as ground levels falls and athletic injuries and in osteoporotic patients High-energy injuries such as motor vehicle injuries(esp motor cycle accidents, pedestrians struck by motor vehicles, and gunshot wounds Tibial plafond fractures refer to fractures involving the weight-bearing surface of the distal tibia. This type of injury usually results from high-energy axial loading but may result from lower-energy rotation forces. Clinical presentation: Patient may complain of severe pain, swelling and bruising down the broken leg, deformity of bones and inability to ambulate with tibia fracture. Approximately 20% of tibial plateau fractures are associated with ligamentous injuries. Limb loss may occur as a result of severe soft-tissue trauma, neurovascular compromise, popliteal artery injury, compartment syndrome, or infection such as gangrene or osteomyelitis. The injured should be referred to the higher centre earliest feasible causing no further harm. Investigations: Perform radiographs of the knee, tibia/fibula, and ankle as indicated and of other areas if required, General Investigations and specific if required according to the status of the health of the patient. In patients with tibial plateau fractures and tibial plafond fractures, computed tomography can help further evaluate the extent of the fracture. In tibial plateau fractures, radiographs may underestimate the degree of articular depression when compared with computed tomography. This is important because articular depression of greater than 3 mm may be considered for surgery. Treatment: soft tissue envelope is the most important component in the evaluation and subsequent care of tibial fractures. Signs of compartment syndrome include crescendo symptoms- (5 P’s) puffiness/oedema, pain out of proportion with passive stretch of involved muscles, paresthesias, and pallor, and a very late finding is pulselessness and paralysis. Increased compartment pressure is present during compartment syndrome; therefore, external palpation frequently aids in the diagnosis. Compartment syndrome must be treated promptly with an emergency surgical fasciotomy Open fractures must be diagnosed and treated appropriately. Tetanus vaccination should be updated, and appropriate antibiotics should be given in a timely manner. This should involve antistaphylococcal coverage and consideration of an aminoglycoside for 60 more severe wounds. Fractures with tissue at risk for opening should be protected to prevent further morbidity. All simple both bone leg fractures, minimally displaced fractures in children / adults should be managed with closed reduction and above knee cast.
Radiologically generic glycomet 500mg, in bony ankylosis the trabeculae are seen to be crossing the joint line glycomet 500mg on line. The child complains of pain in the joint discount 500 mg glycomet overnight delivery, aggravated by movement cheap glycomet 500 mg without prescription, and often wakes ‘up at night because muscle spasm gets reduced and causes pain buy cheap glycomet 500mg on-line. Low- grade fever purchase glycomet 500mg online, loss of weight and appetite are some of the symptoms of generalized toxemia usually seen. A negative test may rarely be seen in severe or disseminated disease or in an immunocompromised patient. Lytic lesion and periosteal reaction are seen, although latter is much more prominent in pyogenic infection. Joint space decreases due to cartilage erosion and lytic lesions are seen in the epiphyseal area. The radiological signs of a healing lesion are absence of rarefaction and bony ankylosis. The culture and sensitivity tests for various anti fuberculosis drugs also help in giving appropriate chemotherapy in resistant cases or cases of multi-drug resistant tuberculosis; which are seen quite frequently in today’s clinical practice. It recommended that it should be practiced in all diagnostic centres of our country, even for suspected vertebral tuberculosis. Biopsy from the bone or synovium can provide an early diagnosis for timely starting the treatment and preventing damage to the joint. Biopsy from a cystic lesion in bone or from synovium is more likely to be positive. Some other investigations may include: sputum smear examination and culture, routine urine examination for isolation of tubercie bacilli and an intravenous pyelogram for ruling out pulmonary and genitourinary lesions, respectively. Eradication of the disease and preservation of function are important both in osseous and joint diseases. In case of joints, joint mobility and stability are also the early goals to be achieved. In case the articular cartilage is eroded the joint becomes unsalvageable in terms of function, mobility and stability. In such a situation the aim of treatment is to achieve a sound bony ankylosis which is painless and gives stability, although the patient will not have movements at that joint. General rest and local rest to the specific bone and joint are essential parts of the treatment. However, in cases where the articular surface is not involved a judicious blend of rest and mobilization exercises have to be resorted for restoration of function. However, in case of persistently draining sinuses which are secondarily infected, suitable broad spectrum antibiotics have to be given. About 15% of patients do not respond to chemotherapy alone if the lesion contains much caseation and sequestra. In such situations excision of the diseased focus not only removes the diseased toxic material but also increases vascularity and allows the anti-tuberculosis drugs to reach the site of the lesion. A standard drug regimen is given which includes rifampicin, pyrazinamide, ethambutol, isoniazid, and in some cases even streptomycin. The latter is useful because it kills the rapidly multiplying extracellular tubercle bacilli in the lungs for the initial six months. After two clinically and radiologically, pyrazinamide is stopped and isoniazed, rifampicin and ethambutol are continued for one year. In some cases therapy may be required for 18 months for complete healing of the lesion.