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Before the development of echocardiography, cardiac disease in the horse was diagnosed if a loud heart murmur (grade III-IV/VI or louder) and clinical signs of congestive heart failure (coughing, edema, venous distention, jugular pulsations) were detected on physical examination. Arrhythmias that persisted during and after exercise also indicated cardiac disease, which could be characterized electrocardiographically. Electrocardiography, thoracic radiography, angiography, cardiac catheterization, and oximetry could add only small pieces of information about the heart. M-mode echocardiography provided the first "window" with which to evaluate the heart and its intracardiac structures, albeit an ice-pick one-dimensional view. With M-mode echocardiography, the diameter of the aorta at the valves, the left ventricle, right ventricle, and left atrial appendage, as well as the thickness of the interventricular septum and left ventricular free wall, could be measured. Motion and thickness of the tricuspid, mitral, and aortic valves could be assessed, but only in a one-dimensional plane. Two-dimensional echocardiography provided an added dimension, resulting in visualization of all the intracardiac structures, aorta, and pulmonary artery. Two-dimensional echocardiography became the diagnostic technique of choice for the evaluation and characterization of congenital cardiac disease in critically ill neonates, as well as in adult horses. Two-dimensional echocardiography also improved the ability to diagnose valvular regurgitations, characterize valvular lesions (bacterial endocarditis, ruptured chorda tendineae), myocardial function (segmental wall motion abnormalities), atrial size, mass lesions (endocarditis, neoplasia, and thrombi), and pericardial effusion. Information about blood flow was obtained using contrast echocardiography but was limited to certain cardiac abnormalities (congenital cardiac defects and tricuspid regurgitation). This information about blood flow was limited to the detection of positive or negative contrast jets. Comprehensive information about blood flow was lacking until the application of Doppler echocardiography to equine cardiology. Pulsed-wave and color flow Doppler echocardiography resulted in precise localization of the abnormal blood flow and semiquantitation of the shunt flow or regurgitant jet. Color flow Doppler echocardiography sped up the localization and semiquantitation of the jet in many instances and provided some information about blood flow velocity in the enhanced and variance modes. The peak velocity of jets can be determined using continuous-wave Doppler echocardiography. This value then can be used to estimate pressure difference between cardiac chambers or to calculate cardiac output noninvasively if angles parallel to flow can be obtained. Thus, information about cardiac size, function, and blood flow can be combined to diagnose cardiac disease in horses and to formulate a prognosis for life and performance.
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PMID:Advances in echocardiography. 193 72

Bacterial endocarditis of the tricuspid valve was diagnosed in a cow with weight loss, reduced milk production, and intermittent fever. Clinical signs of disease included jugular and mammary vein pulses, tachycardia, large cardiac silhouette, and grade-III/V holosystolic murmur. The diagnosis was also supported by echocardiographic findings and isolation of Streptococcus viridans from blood samples. The cow was treated with penicillin, furosemide, acetylsalicylic acid, heparin, and potassium chloride and survived 14 months after the diagnosis, producing 1 live calf and 4 viable embryos. The cow's heart rate exceeded an upper normal limit of 80 beats/min during most of the initial 4 months of treatment. Additional clinical signs of disease that were observed during treatment included diarrhea, ventral edema, and coughing. General medicine and cardiology textbooks have previously minimized the potential benefits of anticoagulant use in cases of septic endocarditis. The advent of routinely performed embryo transfer procedures may make treatment of endocarditis feasible in cattle with exceptional genetic merit.
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PMID:Endocarditis in a cow. 191 33

Among the acquired or congenital valvular dysfunctions that require conservative valvuloplastic surgical intervention or valvular replacement, the rheumatic valve disease is reported in a limited number of cases among the developed countries, while it is frequent in those with precarious socio-economic conditions. In these countries there are many cases of rheumatic valve diseases during childhood, quickly leading to serious health conditions to require valve replacement during second and third childhood. On the contrary, in the more developed countries, congenital valvular disease prevail by far. The child who underwent valve replacement, once dismissed from cardio-surgical centre, must be nursed domiciliary by his family pediatrician. This assistance consists in a strict supervision for a precocious identification of valvular prosthesis dysfunctions and possible embolic and hemorrhagic complications and in supplying anticoagulant therapy. For this purpose it is important to refer to a well equipped cardiological centre. Besides these fundamental tasks there are others - equally important - directed to preserve health: curing each pathological extracardiac event, intercurrent or recurrent; preventing, with or without compulsory vaccinations, infectious childhood's diseases; preventing especially bacterial endocarditis as the most frequent cause of prosthesis pathology. This work pays particular attention to bacterial endocarditis (prophylaxis and cure). Thromboembolism and anticoagulant therapy (with the list of coumarin drug interventions) have also been dealt. Moreover we have reported brief indications on the prevention and/or cure of diseases for which vaccination is not compulsory, such as: measles, chicken-pox, whooping-cough, typhus, influenza. Our script ends with good suggestions on nourishment and physical activity.
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PMID:[The pediatrician faced with the child with a valvular prosthesis]. 282 34

Pharmacokinetics and clinical effects of ceftizoxime (CZX), a new cephalosporin antibiotic, were investigated and following results were obtained. 1) Ceftizoxime was given by intravenous injection or drip infusion for 1 hour at a single dose of 30 mg/kg. After intravenous injection, the mean peak serum level of 3 children was 95.9 mcg/ml at 15 minutes and half-life time was 1.18 hours. After 1 hour drip infusion, the mean peak serum level of 3 children was 79.5 mcg/ml at the end of infusion and half-life time was 1.20 hours. The urinary level was high and the mean urinary recovery rate was 69.6% and 63.4% up to 6 hours after intravenous injection and 1 hour drip infusion, respectively. 2) CZX was administered in dose of 39--76 mg/kg to 7 pediatric patients (4 cases of purulent meningitis, 2 of septicemia with purulent meningitis, and 1 of aseptic meningitis) by a single intravenous injection. In patients with purulent meningitis, passage into the cerebrospinal fluid was relatively as good as 30% of serum level at the same time in the presence of remarkable signs of inflammation, but poor in cases of mild inflammation or aseptic meningitis. 3) Cerebral puncture fluid level in 1 patient with cerebral abscess was as good as 65.5% of serum level at the same time. 4) CZX was given to 28 cases of respiratory tract infection, 1 of tonsillitis with otitis media, 6 of scarlet fever, 1 each of maxillary sinusitis and bacterial endocarditis, 6 of purulent meningitis, 2 of septicemia, 5 of septicemia suspected, 2 of septicemia with purulent meningitis, 1 each of osteomyelitis, typhoid fever, peritonitis and biliary tract infection, 16 of urinary tract infection, 14 of skin and soft tissue infection, and 1 of external otitis, totaling 87 cases. The mean daily dose of 101.6 mg/kg was administered for an average of 10 days mainly by intravenous injection 4 times daily. Clinical results obtained were excellent in 34 cases, and good in 46. Bacteriological effectiveness rate was 100%. As for side effects, fever, fever with rash, fever with cough and diarrhea appeared in 1 each case out of 182 cases including 95 drop out cases. As for laboratory findings, eosinophilia, thrombocytopenia, elevation of GOT, that of GOT with GPT, and that of GOT with LDH appeared in 10, 2, 2, 3 and 1 cases, respectively.
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PMID:[Pharmacokinetics and clinical effects of ceftizoxime in pediatric field (author's transl)]. 627 4

A 25-year-old quadriplegic man with mitral leaflet prolapse syndrome was seen for complaints of intermittent fever, chills, and cough of three months' duration. Subacute bacterial endocarditis was diagnosed. Unusual complications of this disorder included hyperplenism with pancytopenia, pericardial effusion, and multiple infections in the blood and the spleen. Antibiotic therapy was begun, and splenectomy was performed. After seven weeks of treatment, the patient was free of symptoms and was discharged with advice on appropriate antibiotic prophylaxis. We believe that although bacterial endocarditis is a major complication of mitral leaflet prolapse syndrome, it can be prevented with antibiotic prophylaxis whenever dental, surgical, or other invasive procedures are performed.
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PMID:Bacterial endocarditis in mitral leaflet prolapse syndrome. 707 Oct 31

The demographics and natural clinical history of canine congenital subaortic stenosis (SAS) were evaluated by retrospective analysis of 195 confirmed cases (1967 to 1991), 96 of which were untreated and available for follow-up evaluation. Of these, 58 dogs had left ventricular outflow systolic pressure gradients available for assessment of severity. All 195 dogs were used for demographic analysis. Breeds found to be at increased relative risk included the Newfoundland (odds ratio, 88.1; P < .001), Rottweiler (odds ratio, 19.3; P < .001), Boxer (odds ratio, 8.6; P < .001), and Golden Retriever (odds ratio, 5.5; P < .001). Dogs with mild gradients (16 to 35 mm Hg) and those that developed infective endocarditis or left heart failure were diagnosed at older ages than those with moderate (36 to 80 mm Hg) and severe (> 80 mm Hg) gradients. Of 96 untreated dogs, 32 (33.3%) had signs of illness varying from fatigue to syncope; 11 dogs (11.3%) developed infective endocarditis or left heart failure. Exercise intolerance or fatigue was reported in 22 dogs, syncope in 11 dogs, and respiratory signs (cough, dyspnea, tachypnea) in 9 dogs. In addition, 21 dogs (21.9%) died suddenly. Sudden death occurred mainly in the first 3 years of life, primarily but not exclusively, in dogs with severe obstructions (gradient, > 80 mm Hg; odds ratio, 16.0; P < .001). Infective endocarditis (6.3%) and left heart failure (7.3%) tended to occur later in life and in dogs with mild to moderate obstructions.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:The natural clinical history of canine congenital subaortic stenosis. 788 29

A 38-year-old man was admitted to our hospital for detailed examination of fever, cough and yellow sputum. At the age of 32, be had mitral prosthesis for the first time, because of mitral regurgitation due to mitral valve prolapse. Four years previously, he had again undergone mitral prosthetic valve replacement due to prosthetic valve endocarditis due to staphylococcus epidemidis. This occasion, staphylococcus aureus was isolated by arterial blood culture. Transesophageal echocardiography detected vegetation attached to the mitral prosthetic valve and paravalvular leakage. The diagnosis was prosthetic valve endocarditis. He underwent a third mitral prosthetic valve replacement. Detection of the source of infection was difficult only by transthoracic echocardiography, and immediate transesophageal echocardiography seemed mandatory to diagnose bacterial endocarditis.
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PMID:[Mitral prosthetic valve replaced twice due to repeated prosthetic valve endocarditis: a case report]. 921 Nov 15

A 52-year-old woman with a 3-week history of fever and cough was diagnosed as having bacterial endocarditis with vegetation and severe mitral valve insufficiency by echocardiography. Blood culture revealed Streptococcus mitis. After antibiotic treatment for 3 weeks, the patient noticed swelling with pain in her left groin. Computed tomography revealed an occluded aneurysm in the left common femoral artery. Simultaneous surgical treatments of mitral valve replacement and bypass grafting using a saphenous vein following resection of the mycotic femoral arterial aneurysm were performed. Pathohistological examination of surgical specimens revealed acute inflammatory findings, but no microorganisms were found, probably because of the preoperative antibiotic therapy. Her postoperative course was uneventful, and there was no recurrence of mycotic aneurysms in a period of 10 months after the operation. Prompt recognition and urgent simultaneous surgical treatments for mycotic aneurysms complicated with infective endocarditis were effective.
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PMID:Simultaneous mitral valve replacement and bypass grafting for mycotic aneurysm of the femoral artery during the active phase of infective endocarditis: a case report. 1188 81

A 12-year-old boy presented to our clinic with recurrent lower respiratory tract symptoms that are wheezing, cough, bronchopneumonia, and fever and with a diagnosis of bacterial endocarditis. Physical examination revealed that breath sounds diminished in the left lower lobe. Because cardiac sounds and echocardiography were normal bacterial endocarditis was excluded. Chest radiograph and computerized tomography scan showed a left lower lobe atelectasis and consolidation. Despite medical therapy including antibiotics, bronchodilator etc, atelectasis persisted. Fiberoptic flexible bronchoscopy (FFB) revealed a tumor that totally obstructed the left lower lobe bronchus. Open lung biopsy revealed a low-grade mucoepidermoid carcinoma. Left lower lung lobectomy was performed. The patient is in good condition 12 months after the operation. We proposed that FFB should be performed earlier in patients with recurrent lower respiratory symptoms who have persistent atelectasis or unifocal infiltration.
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PMID:A rare cause of persistent atelectasis in childhood: mucoepidermoid carcinoma. 1893 36

Infective endocarditis (IE) is defined as infection of endocardial surface of the heart. It may include one or more heart valves, the mural endocardium or a septal defect. Its intracardiac effect includes severe valvular insufficiency which may lead to intractable congestive heart failure and myocardial abscess. Infective endocarditis especially complicated by an abscess is associated with high mortality, despite the medical and surgical therapeutic options available. Surgical intervention is indicated in cases of heart failure or uncontrolled infection and sometimes for the prevention of embolic phenomena. We report a case of 42 yrs/M with RVHD admitted in Dr D.Y.Patil hospital, Kolhapur. He had high grade, continuous fever, vomiting, cough with expectoration since 15 days prior to admission. He had prior embolic stroke 2 months back from which he recovered completely. The diagnosis of Infective endocarditis was confirmed clinically & echocardiographically by Duke's criteria. His ECHO showed severe MR, Moderate MS and large vegetations on AML oscillating through mitral orifice along with subvalval (mitral) abscess. Due to severe haematemesis following Mallory weiss tear surgical intervention was not possible. Patient succumbed as a result of refractory pulmonary oedema.
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PMID:Infective Endocarditis Complicated with Anterior Mitral Leaflet Abscess: A Case Report. 2846 14


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