Objective To investigate clinical diagnosis，timing of surgery and perioperative therapeutic strategies for blood culture-negative infective endocarditis （IE）. Methods Clinical data of 240 IE patients who were admitted tWuhan Asia Heart Hospital between July 2008 and July 2012 were retrospectively analyzed. According to their blood cultureresults，all the patients were divided into blood culture-negative group and blood culture-positive group. In the blood culture-negative group，there were 158 patients including 88 male and 70 female patients with their age of 51.3±10.1 years. In the blood culture-positive group，there were 82 patients including 45 male and 37 female patients with their age of 48.9±9.8 years. All the patients underwent surgical treatment，and the surgical procedures included complete vegetations excision，debridement of infected valves，removal of necrotic tissue around the annulus，and concomitant heart valve replacement or intracardiac repair. Postoperatively，all the patients received routine monitoring in ICU，cardiac glycosides，diuretics，other symptomatic treatment and adequate dosages of antibiotics for 4-6 weeks. Results Four patients died postoperatively in this study including 1 patient for low cardiac output syndrome and 3 patients for multiple organ dysfunction syndrome，1 patient in the blood culture-positive group and 3 patients in the blood culture-negative group respectively. There was no statistical difference in surgical mortality between the 2 groups （χ2=0.15，P=0.70）. All the other patients were discharged successfully and followed up for 6 to 36 months with the median follow-up time of 22 months. During follow-up, 2 patients died including 1 patient for cerebral infarction 2 years after surgery and another patient for cerebral hemorrhage 3 yearsafter surgery. Conclusion Patients with blood culture-negative IE should receive adequate dosage and duration of broad-spectrum antibiotics to control the infection rapidly, and aggressive surgical therapy to decrease in-hospital mortality and improve their quality of life and prognosis.
Abstract：?Objective?To analyze surgical procedures and clinical outcomes for patients with hypertrophic obstructive cardiomyopathy （HOCM） complicated by infective endocarditis.?Methods?We retrospectively analyzed clinical data of 7 patients with HOCM complicated by infective endocarditis who underwent modified Morrow procedure，removal of intracardiac vegetation，and valve replacement in Fu Wai Hospital from Sep. 2006 to Feb. 2012. There were 5 male patients and 2 female patients with their mean age of 39.80±13.60 years（ranging 21-55）. Postoperative clinical outcomes were observed. Preoperative and postoperative left ventricular outflow tract （LVOT） gradients， left atrium （LA） diameter，left ventricular ejection fraction （LVEF） and heart function were compared.?Results?There was no in-hospital death and perioperative survival rate was 100% in this group. Bacteria vegetations were multiply detected on the mitral valve leaflet （7 cases）， aortic valve leaflet （4 cases） and ventricular septum （1 case） with their diameter of 2-19 mm. Blood culture showed Staphylococcus aureus （3 cases），Squirrel aureus （1 case） . Postoperatively， first-degree atrioventricular block occurred in 2 patients， complete left bundle branch block in 1 patient， left anterior division block in 2 patients， and all these complications were not treated. Postoperative LVOT gradient and LA diameter were significantly lower than preoperative values （P＜0.05）， and cardiac function was significantly improved in these patients. All the patients underwent transthoracic echocardiography at a mean follow-up of 13.00±17.19 （1-49） months in outpatient service. The clinical symptoms of all these patients were diminished or significantly ameliorated and their quality of life was considerably improved. All the patients had NYHA classⅠorⅡ without any reintervention or death during follow-up.?Conclusion?Modified Morrow procedure and valve replacement is a good surgical strategy for patients with HOCM complicated by infective endocarditis with satisfactory early and mid-term clinical outcomes.
Objective To improve the surgical results of infective endocarditis, the results and methods of aortic root replacement in patients with severe aortic valve infective or prosthetic valve endocarditis were summarized. Methods From Sept.1995 to June 2008, there were 11 patients with severe aortic valve endocarditis treated surgically, included 6 active endocarditis and 5 healed endocarditis. Preoperative arterial blood bacterial culture were positive in 6 patients. Preoperative echocardiography showed all patients had various degree of aortic regurgitation or paraprosthetic leakage, left ventricular endsystolic diameter(LVESD) was 6.0±0.7cm, LVESD was equal or greater than 5.5cm in 7 patients, left ventricular ejection fraction (LVEF) was 47.8%±11.2％, and LVEF was equal or less than 50% in 8 patients. After careful debridement, composite conduit (9 patients) or cryopreserved allograft (2 patients) was used to replace the aortic root. Concomitant procedures were coronary artery bypass grafting in 4 patients, mitral annuloplasty in 3 patients, and ventricular septal defect repair in 1 patient. Results There was one patient died of postoperative cardiac arrest, one patient had Ⅲ° atrioventricular block and pacemaker implanted. Ten patients were followed up, followup time were from 3 months to 13.2 years. During the followup period, one patient had recurrence of endocarditis and died, others survived uneventually. Conclusion Aortic root replacement must be considered in following patients: endocarditis combined with root aneurysm or sinus aneurysm, infectious disease involved in sinus wall or nearby coronary ostia, annulus impairment and severe destructive annulus after debridement. The key points of the surgery are debriding the infectious tissue completely, preventing aortic root bleeding. Although the root replacement is relatively complex, the surgical results could be improved after complete debridement of infectious tissue.
Abstract： Objective To summarize the clinical diagnostic and therapeutic experiences of infective endocarditis (IE). Methods From Jan. 2000 to Aug. 2006，60 IE patients underwent heart operation in PLA General Hospital. There were 46 male and 14 female patients, with an average age of 34.3 years old. Blood culture was positive in 25 cases (41.7%), Streptococcus was found in 12 cases, Staphylococcus in 6 cases and other bacteria in 7 cases. Ultrasonic cardiography(UCG) revealed vegetations or valve perforation in 42 cases, including 26 aortic valves, 9 mitral valves and 6 double valves. 28 cases had primary cardiac diseases，including 16 cases of congenital heart anomalies，9 cases of rheumatic heart disease and 3 cases of mitral valve prolapse. High dose of sensitive antibiotics were utilized all through the treatment in all IE patients. There were 55 selective surgeries and 5 emergent ones. Infected tissues were debrided radically，intracardiac malformation was corrected in 16 cases, valve replacement was performed in 41 cases, tricuspid plasty in 1 case. Results There were 3 patients of earlydeath. 51 patients(89.5%) were followedup for 5-71 months with norecurrence. Postoperative cardiac function (NYHA): class I was in 38 cases, class II in 13 cases. Conclusion Early diagnosis, optimal surgical timing, combined internal medicine and surgical treatment provided good therapeutic effect of IE.
ObjectiveTo discuss the key nursing points for patients with infective endocarditis and congenital isolated kidney after valve replacement. MethodsIn December 2012, one infective endocarditis patient with isolated kidney underwent heart valve replacement in our hospital. In addition to actively preventing postoperative infection of the heart valve, our nursing focused mainly on the isolated kidney protection and monitoring, and the related complications. ResultsThe surgery was successful, and the isolated kidney was effectively protected. The patient recovered and was discharged from the hospital. ConclusionFor patients with congenital isolated kidney with infective endocarditis, patients' urine output per hour and 24 h discrepancy quantity should be closely observed after valve replacement surgery. It is also very important to intervene early and carry out comprehensive protection of the renal function.
ObjectiveTo explore the clinical value of transthoracic echocardiography (TTE) in the diagnosis of infective endocarditis. MethodsWe retrospectively analyzed the transthoracic echocardiogram in 35 patients with infective endocarditis confirmed between September 2003 and September 2013. Patients underwent routine heart scan in all sections to measure sizes of all chambers and cardiac function, observe morphologies, activities and functions of all valves and ventricular walls, and diagnose whether underlying heart diseases exist, focusing on intracardiac vegetations and their distributions, morphologies, sizes, numbers, echoes and activities, and a full analysis of the blood culture findings was also conducted. ResultsOf the 35 patients undergoing initial TTE, 29 were positive, and 6 were negative (2 positive and 4 negative in the reexamination one week later). Vegetations were found in the mitral valve (8/35), aortic valve (15/35), tricuspid valve (5/35), pulmonary valve (1/35), pulmonary arterial wall (1/35) and right ventricle (1/35), respectively. There were 29 (8 and 21 with congenital and acquired heart diseases, respectively) and 6 patients with and without underlying heart diseases, respectively. Of the 35 blood cultures, 33 were positive and 2 were negative. ConclusionsTTE is rapid and accurate for early diagnosis of infective endocarditis, precise localization and rough quantification of vegetations, determination of whether valve damage occurs and what its severity is, and detection of whether complications exist. It is valuable for early diagnosis, treatment, follow-up and prognosis judgment.
ObjectiveTo investigate clinical outcomes of mitral valvuloplasty (MVP)for the treatment of infective endocarditis (IE)and mitral regurgitation (MR). MethodsFrom March 2002 to January 2012, 33 patients with IE and MR underwent MVP in Fu Wai Hospital. There were 23 male and 10 female patients with their age of 10-67 (35.7±17.8)years. Thirteen patients had previous cardiac anomalies. Preoperatively, there were 5 patients with mild MR, 15 patients with moderate MR and 13 patients with severe MR. There were 5 patients in New York Heart Association (NYHA)functional classⅠ, 23 patients in classⅡ, 4 patients in classⅢ and 1 patient in classⅣ. All the patients received MVP including 14 patients received MVP in active phase of IE. Concomitantly, 6 patients received aortic valve replacement, 5 patients received tricuspid valvuloplasty, 1 patient received coronary artery bypass grafting, 1 patient received resection of left atrial myxoma and 1 patient received repair of aortic sinus aneurysm. Surgical procedures included pericardial patch closure of leaflet perforation in 5 patients, leaflet excision and suturing in 17 patients, double-orifice method in 3 patients, chordae transfer and artificial chordae implantation in 5 patients, and annuloplastic ring implantation in 15 patients. ResultsOne patient died of acute myocardial infarction 7 days after the operation. All other 32 patients were successfully discharged. Echocardiography before discharge showed left ventricular end-diastolic diameter (LVEDD, 48.9±7.6 mm)and left atrial diameter (LAD, 31.7±7.4 mm)were significantly smaller than preoperative values (P=0.000). Thirty-two patients were followed up for 6-125 (73.0±38.6)months. There was no death, IE recurrence, bleeding or thromboembolism during follow-up. One patient received mitral valve replacement for mitral stenosis 3 years after discharge. There were 25 patients in NYHA func-tional classⅠ, 5 patients in classⅡand 2 patients in classⅢ. There were 4 patients with mild MR, 1 patient with moderate MR, and 26 patients had no MR. One patient had faster mitral inflow at diastolic phase (1.7 m/s). One patient had moderate aortic regurgitation. LVEDD and LAD during follow-up were not statistically different from those before discharge. Left ventricular ejection fraction during follow-up was significantly higher than that before discharge (60.9%±6.6% vs. 57.5%±6.7%, P=0.043). ConclusionMVP is a reliable surgical procedure for patients with IE and MR, and can significantly reduce left atrial and left ventricular diameter and improve cardiac function postoperatively.
ObjectiveTo study the relationship between the timing of surgery and one-year outcome in patients with infective endocarditis. MethodsWe retrospectively analyzed the clinical data of 97 patients suffered from leftside native valve infective endocarditis with neoplasm, admitted in Shanghai First People's Hospital between January 2000 and December 2011. There were 65 males and 32 females with mean age of 55.2±16.3 years (ranged 29 to 75 years). They were divided into two groups according to whether the surgery was performed within a week after diagnosis. The in-hospital mortality and one-year mortality, embolism and re-infection were calculated and compared between the two groups. ResultsThere was no significant difference in the in-hospital mortality between the early surgery group and the conventional surgery group (1.9% versus 6.7%, P=0.241). While there was a significant difference in the rate of inhospital embolism related complications (1.9% versus 13.3%, P=0.030) between the two groups. There was no significant difference in one-year mortality between the two groups (1.9% versus 8.9%, P=0.122). The incidence rate of embolism related complication was 5.8% in the early surgery group and 20.0% in the conventional surgery group with a statistical difference (P=0.034). There was one patient with recurrent cerebral infarction among the 11 patients of cerebral infarction in the early surgery group,while 6 recurrent patients in the 9 patients with cerebral infarction in the conventional surgery group (9.1% versus 66.7%, P<0.005). ConclusionsEarly surgery in patients with left-side native valve infective endocarditis can't reduce the in-hospital mortality and one-year mortality but does decrease embolic events significantly. Early surgery is feasible in the patients with cerebral infarction.
ObjectiveTo systematically review the short term and long term efficacy of early surgery for infective endocarditis (IE) patients. MethodsWe searched PubMed, EMbase, The Cochrane Library, CBM, WanFang Data and CNKI databases for cohort studies concerning the efficacy of early surgery for IE patients from inception to October 2014. Two reviewers independently screened literature, extracted data and assessed the risk bias of included studies. Then meta-analysis was performed by using RevMan 5.3 software. ResultsSixteen cohort studies including 8 141 patients were included. The results of meta-analysis showed that early surgery could reduce the short term mortality (OR=0.57, 95%CI 0.42 to 0.77, P=0.000 4) and long term mortality (OR=0.57, 95%CI 0.43 to 0.77, P=0.000 7) in IE patients. Subgroup analysis showed that early surgery could significantly reduce the short term mortality and long term mortality in patients with native valve endocarditis (NVE). ConclusionEarly surgery can reduce IE patients' short term mortality and long term mortality. Due to the limited quality and quantity of the included studies, more large-scale high-quality studies are needed to verify the above conclusion.
ObjectiveTo analyze the risk factors of the death associated with infective endocarditis, and to evaluate the timing of surgical treatment of infective endocarditis. MethodsWe retrospectively analyzed the clinical data of 62 patients with infective endocarditis in our hospital between August 2015 and August 2017. There were 43 males and 19 females at age of 19–75 (46.1±16.6) years. The clinical data were divided into a death group and a survival group, a paravalvular leakage group and a no periannular leakage group, an emergency operation group and a non-emergency operation group.The risk factors of infective endocarditis and the choice of operation time were analyzed. ResultsThree of the 62 patients (4.8%) died after surgery. Postoperative perivalvular leakage (regurgitation over 2 mm) in 8 patients, accounting for 12.9% of the total. Univariate analysis showed that albumin content, creatinine level, total cardiopulmonary bypass time and ascending aorta occlusion time were significantly associated with early postoperative mortality (P<0.05). The results of logistic analysis showed that age, preoperative albumin level, creatinine level, total cardiopulmonary bypass time, and ascending aorta occlusion time were significantly associated with early postoperative perivascular leakage (P<0.05), and long ascending aorta occlusion time is an independent risk factor for early death (P<0.05). There was no statistical difference in early death and the perivalve leakage between the emergency operation and the non emergency operation. ConclusionPatients with infective endocarditis should accept early surgical treatment. The choice of surgical approach should be selected according to the actual situation of patients. And we should pay more attention to albumin and creatinine levels in preoperative patients. In the operation, to shorten extracorporeal circulation time and aortic clamping time can improve the prognosis of patients.