Biomedical subjects

Cheng-Hsien Lu

Publications and source records attributed to Cheng-Hsien Lu.

43 records · Page 3Linked to original sources

PubMed2002

Frequent association with neurosurgical conditions in adult Proteus mirabilis meningitis: report of five cases.

Adult Proteus (P.) mirabilis meningitis is relatively rare and has not been examined individually in the English-language literature. During a period of 15 years (January 1986-December 2000), four adult patients with P. mirabilis meningitis and one adult patient with mixed bacterial meningitis involving P. mirabilis were identified at Chang Gung Memorial Hospital, Kaohsiung. These five patients included one man and four women, aged from 19 to 74 years (mean age=55.4). P. mirabilis infection accounted for 1.7% (4/229) of cases of our culture-proven monomicrobial adult bacterial meningitis and was involved in 7.1% (1/14) of cases of our adult mixed bacterial meningitis during this period. Underlying debilitating conditions including diabetes mellitus and neurosurgical disorders were common in these five cases. Adult P. mirabilis meningitis had an acute clinical course, with fever and consciousness-disturbance occurring as most prominent clinical manifestations in all patients. Other common manifestations included hydrocephalus, seizure, septic shock and wound infection. Hematogenous spread would appear to be the most likely mechanism. Multi-antibiotic resistant strains of P. mirabilis were not found in our patients. All strains were susceptible to third-generation cephalosporins, imipenem, aztreonam and ciprofloxacin. The results of treatment for adult P. mirabilis meningitis were not satisfactory, most of the patients surviving with severe neurological deficit.

Adult↗

PubMed2002

Adult spinal epidural abscess: clinical features and prognostic factors.

Twenty-nine adult patients with spinal epidural abscess (SEA), aged 31-73 years, have been identified over a period of 8 years. The 29 SEA patients included 21 men and eight women with a mean age of 54 years. Initial diagnosis of SEA was made in only 17% of our patients and another 48% of patients were initially suggested of having infection or mass of the spine. Spinal pain and fever were the two most common clinical features shared among our patients. The two most common pathogens were Staphylococcus aureus and Mycobacterium tuberculosis, which were found in 62% of patients. Twenty-seven patients received surgical intervention and antibiotic treatment for SEAs, one of which succumbed to meningitis. Two patients without neurological abnormalities received conservative treatment alone and survived. The number of patients, which showed improvement of symptoms, included all seven patients with neck/back pain without neurologic deficits, all 15 patients with paraparesis, 10 of 13 patients with bladder/bowel dysfunction with or without motor deficits, and none of the five with plegia. Preoperative plegia was identified as a poor prognostic factor, and patients with SEA continue to show high rates of morbidity and mortality. Thus, in order to improve the therapeutic outcome of patients with SEA, early diagnosis and management are mandatory to treat the patients before the deterioration of neurologic deficit occurs.

Adult↗

PubMed2002

Community-acquired bacterial meningitis in adults: the epidemiology, timing of appropriate antimicrobial therapy, and prognostic factors.

Between January 1986 and December 1999, 109 adult patients with culture-proven community-acquired bacterial meningitis were identified at Kaohsiung Chang Gung Memorial Hospital. To compare changes over time, the appearance of disease among our patients was divided into two equal time periods: an earlier time period (1986-1992) and a later time period (1993-1999). In this study, there was a decreasing proportion of community-acquired bacterial meningitis compared with nosocomial bacterial meningitis in adult patients in recent years. Its proportion declined dramatically from 81% in the earlier 7 years to 37% in the later 7 years. Of the pathogens, Klebsiella (K.) pneumoniae was the most frequently implicated pathogen, followed by Viridans (V.) streptococci, Streptococcus pneumoniae, and Staphylococcus aureus. Other rare organisms including Acinetobacter baumannii, Salmonella Group B and D, Proteus mirabilis, Group B, D, and non-A, non-B and non-D streptococci, and coagulase-negative staphylococci emerged during the second period. There was a decrease in the mortality rate from 44% in the first to 34% in the second time period, but the overall mortality rate remained high. Of the implicated pathogens, patients infected with V. streptococci had a consistently favorable prognosis, while a dramatic decrease in the mortality rate of those infected with K. pneumoniae was seen in recent years. In the multiple logistic regression analysis, only the presence of septic shock and seizures was independently associated with mortality. The timing of appropriate antimicrobial therapy, as defined by consciousness level, was a major determinant of survival and neurological outcomes for patients with community-acquired bacterial meningitis, and the first dose of an appropriate antibiotic should be administrated before a patient's consciousness deteriorates to a Glasgow coma scale score lower than 10.

Adolescent↗

PubMed2002

Brain abscess caused by aerobic Gram-negative bacilli: clinical features and therapeutic outcomes.

Thirty-three patients (24 males and nine females) with brain abscesses resulting from infection by aerobic Gram-negative bacilli were identified at Kaohsiung Chang Gung Memorial Hospital over a period of 14 years. Of these, 23 cases developed spontaneously, with the remaining ten postneurosurgery. The organisms most frequently involved were Klebsiella (K.) pneumoniae, Pseudomonas aeruginosa, Escherichia coli and Proteus species and included some rare pathogens, such as Salmonella and Enterobacter species, K. oxytoca, Vibrio and Morganella morganii. Apart from one exception, the locations of the abscess were supratentorial. Twenty-four patients presented with a single abscess, while nine revealed multiple abscesses, with 26 treated surgically and seven with antibiotics exclusively. In total, seven patients died, representing an overall mortality rate of 21%. This study demonstrates that brain abscesses associated with neurosurgical procedures are not rare, accounting for 30% of cases in this study, with K. pneumoniae, Proteus and Enterobacter species the most prevalent of the revealed pathogens. Further, Proteus species were the most prevalent pathogens demonstrated for cases of both otogenic and polymicrobial infections. If brain abscesses are diagnosed for diabetic patients or have a gas-forming appearance, a diagnosis of K. pneumoniae infection should be considered, with particular attention paid to detection of other metastatic septic abscesses. In light of the high mortality rate, early treatment is essential to maximize the chances of survival.

Adolescent↗

PubMed2002

Klebsiella meningitis in adults: clinical features, prognostic factors and therapeutic outcomes.

Sixty adult Klebsiella meningitis patients have been identified at Kaohsiung Chang Gung Memorial Hospital in a period of 13 years. Most cases were associated with debilitating diseases, and devastating metastatic septic abscesses are common in diabetic patients with K. pneumoniae meningitis. Although the mortality rate has been significantly reduced in recent years, there has been an increase in nosocomial infections and the emergence of multi-antibiotic resistant strains. Significant prognostic factors include appropriate antibiotic therapy, the presence of septic shock, disseminated intravascular coagulation, and high cerebrospinal fluid protein levels and white blood cell counts. Initial empiric therapy with a third generation cephalosporin should be considered for community-acquired meningitis while antibiotics such as carbapenems should be considered as initial empiric therapy for patients with postneurosurgical meningitis. Early diagnosis and the use of appropriate antibiotics are of crucial importance.

Adult↗

PubMedDate not supplied

Clozapine for blepharospasm, obsessive-compulsive symptoms, and psychotic symptoms in a patient of old brain infarction.

Blepharospasm, psychotic symptoms, and obsessive-compulsive symptoms can result from brain infarction. However, a presentation of these 3 symptoms simultaneously is rare. This report describes a 65-year-old woman who had old brain infarction and presented with these 3 symptoms for 2 years. The patient recovered after receiving a regimen of clozapine 125 mg/d for 3 months. No recurrences of symptoms were noted during a 6-month follow-up. This is the first case report demonstrating that clozapine is effective for a patient with blepharospasm, obsessive-compulsive symptoms, and psychotic symptoms presenting simultaneously. This report also reminds physicians of the possible organic causes of unusual presentations in elderly patients.

Aged↗

PubMedDate not supplied

Bacterial meningitis in hemodialyzed patients.

BACKGROUND: To analyze the clinical features, causative pathogens and therapeutic outcomes of bacterial meningitis in hemodialyzed patients. PATIENTS AND METHODS: Two hundred and sixty-seven patients, > or = 16 yrs, were identified with culture-proven bacterial meningitis. In addition, the causative pathogens and therapeutic outcomes between uremic and non-uremic patients with adult bacterial meningitis were analyzed. RESULTS: Nine uremic patients with bacterial meningitis, accounting for 3% (9/267) of our adult patients with culture-proven bacterial meningitis had fever, disturbed consciousness and seizures. These were the three most common manifestations in our patients. The interval between the onset of symptoms and therapy start was 5-11 days (mean: 9 days). No patients were initially diagnosed with bacterial meningitis, two patients were initially suspected of having infection of unknown origin. In the non-uremic patient group, klebsiella pneumoniae, Staphylococcus aureus, and Streptococcus pneumoniae were the most frequently detected pathogens, while pseudomonas aeruginosa and coagulase-negative Staphylococcus were the most prevalent in the uremic patients group. The overall mortality rates for the non-uremic and uremic patient groups were 33 and 78% respectively. CONCLUSION: The mortality rate for bacterial meningitis in the uremic patients group remained high. Due to non-specific manifestations and slow evolution, bacterial meningitis was commonly misdiagnosed as uremic encephalopathy. Therefore, effective treatment was usually delayed. To avoid treatment failure, early diagnosis, careful monitoring of clinical condition and appropriate antibiotic choices are necessary.

Adult↗