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Pneumococcal infections are the most common invasive bacterial infections in children in the United States. The incidence of invasive pneumococcal infections peaks in children younger than 2 years, reaching rates of 228/100,000 in children 6 to 12 months old. Children with functional or anatomic asplenia (including sickle cell disease [SCD]) and children with human immunodeficiency virus infection have pneumococcal infection rates 20- to 100-fold higher than those of healthy children during the first 5 years of life. Others at high risk of pneumococcal infections include children with congenital immunodeficiency; chronic cardiopulmonary disease; children receiving immunosuppressive chemotherapy; children with immunosuppressive neoplastic diseases; children with chronic renal insufficiency, including nephrotic syndrome; children with diabetes; and children with cerebrospinal fluid leaks. Children of Native American (American Indian and Alaska Native) or African American descent also have higher rates of invasive pneumococcal disease. Outbreaks of pneumococcal infection have occurred with increased frequency in children attending out-of-home care. Among these children, nasopharyngeal colonization rates of 60% have been observed, along with pneumococci resistant to multiple antibiotics. The administration of antibiotics to children involved in outbreaks of pneumococcal disease has had an inconsistent effect on nasopharyngeal carriage. In contrast, continuous penicillin prophylaxis in children younger than 5 years with SCD has been successful in reducing rates of pneumococcal disease by 84%. Pneumococcal polysaccharide vaccines have been recommended since 1985 for children older than 2 years who are at high risk of invasive disease, but these vaccines were not recommended for younger children and infants because of poor antibody response before 2 years of age. In contrast, pneumococcal conjugate vaccines (Prevnar) induce proposed protective antibody responses (>.15 microg/mL) in >90% of infants after 3 doses given at 2, 4, and 6 months of age. After priming doses, significant booster responses (ie, immunologic memory) are apparent when additional doses are given at 12 to 15 months of age. In efficacy trials, infant immunization with Prevnar decreased invasive infections by >93% and consolidative pneumonia by 73%, and it was associated with a 7% decrease in otitis media and a 20% decrease in tympanostomy tube placement. Adverse events after the administration of Prevnar have been limited to areas of local swelling or erythema of 1 to 2 cm and some increase in the incidence of postimmunization fever when it is given with other childhood vaccines. Based on data in phase 3 efficacy and safety trials, the US Food and Drug Administration has provided an indication for the use of Prevnar in children younger than 24 months.
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PMID:American Academy of Pediatrics. Committee on Infectious Diseases. Technical report: prevention of pneumococcal infections, including the use of pneumococcal conjugate and polysaccharide vaccines and antibiotic prophylaxis. 1092 Jan 70

Sleep-disordered breathing is a prevalent condition associated with impairment of daytime function and may predispose individuals to metabolic abnormalities independent of obesity. The primary objective of this study was to determine the metabolic consequences and community prevalence of sleep-disordered breathing in mildly obese, but otherwise healthy, individuals. One hundred and fifty healthy men, without diabetes or cardiopulmonary disease, were recruited from the community. Measurements included polysomnography, a multiple sleep latency test, an oral glucose tolerance test, determination of body fat by hydrodensitometry, and fasting insulin and lipids. The prevalence of sleep-disordered breathing, depending on the apnea-hypopnea index (AHI) cutoff, ranged from 40 to 60%. After adjusting for body mass index (BMI) and percent body fat, an AHI gt-or-equal, slanted 5 events/h was associated with an increased risk of having impaired or diabetic glucose tolerance (odds ratio, 2.15; 95% CI, 1.05-4.38). The impairment in glucose tolerance was related to the severity of oxygen desaturation (DeltaSa(O(2))) associated with sleep-disordered breathing. For a 4% decrease in oxygen saturation, the associated odds ratio for worsening glucose tolerance was 1.99 (95% CI, 1.11 to 3.56) after adjusting for percent body fat, BMI, and AHI. Multivariable linear regression analyses revealed that increasing AHI was associated with worsening insulin resistance independent of obesity. Thus, sleep-disordered breathing is a prevalent condition in mildly obese men and is independently associated with glucose intolerance and insulin resistance.
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PMID:Sleep-disordered breathing and insulin resistance in middle-aged and overweight men. 1187 3

Umbilical artery catheters are an essential aid in the treatment of newborn infants who have cardiopulmonary disease. However, it is well-known that umbilical artery catheterization is associated with complications. The most frequent visible problem in an umbilical line is blanching or cyanosis of part or all of a distal extremity or the buttock area resulting from either vasospasm or a thrombotic or embolic incidence. Ischemic necrosis of the gluteal region is a rare complication of umbilical artery catheterization. We report the case of a full-term infant of an insulin-dependent diabetic mother with poor blood glucose control who developed a left peroneal nerve palsy after ischemic necrosis of the gluteal region after umbilical artery catheterization. The infant was born weighing 5050 g. The mother of the infant had preexisting diabetes mellitus that was treated with insulin from the age of 14 years. The metabolic control of the mother had been unstable both before and during the pregnancy. The neonate developed respiratory distress syndrome soon after birth and was immediately transferred to the neonatal intensive care unit. Mechanical ventilation via endotracheal tube was quickly considered necessary after rapid pulmonary deterioration. Her blood glucose levels were 13 mg/dL. A 3.5-gauge umbilical catheter was inserted into the left umbilical artery for blood sampling without difficulty when the infant required 100% oxygen to maintain satisfactory arterial oxygen pressure. Femoral pulses and circulation in the lower limbs were normal immediately before and after catheterization. A radiograph, which was taken immediately, showed the tip of the catheter to be at a level between the fourth and fifth sacral vertebrae. The catheter was removed immediately. Circulation and femoral pulses were normal and no blanching of the skin was observed. Another catheter was repositioned and the tip was confirmed radiologically to be in the thoracic aorta between the sixth and seventh thoracic vertebrae. The catheter was continuously flushed with heparinized solution. Three days after umbilical arterial catheterization, bruising was observed over the left gluteal region. The catheter was immediately removed despite its correct position. Over the next few days, the bruised skin and underlying tissues became necrotic. The area affected was 3 x 4 cm in diameter, with central necrosis surrounded by a rim of dark, red skin, which, in turn, was sharply demarcated from normal skin by a narrow, pale zone. Surgical excision of the gluteal necrosis was performed, but a deep ulcer 3 cm in diameter was left. The gluteal ulcer required 1 month to heal completely with extensive scar tissue formation. Throughout this period, the infant showed active movements in all of her limbs. At 4 weeks of age deterioration of all movement below the left knee with a dropping foot was observed. Severe peroneal nerve palsy was confirmed through nerve conduction studies, and there was electromyographic evidence of degeneration of the muscles supplied by the peroneal branch of the sciatic nerve. A Doppler study, which was also conducted, revealed no vascular damage. Treatment with physiotherapy and night-splinting of the left ankle was instituted. Repeated examination and nerve conduction tests at 3 months showed slow improvement with the left peroneal nerve remaining nonexcitable. At the time of this writing, the infant is 6 months old, and muscular strength below the left knee is still weak and atrophic changes in the form of muscle-wasting are already present. The rest of her motor development is normal. In our case, gangrene of the buttocks and sciatic nerve palsy followed displacement of the tip of the catheter into the inferior gluteal artery, a main branch of the internal iliac artery supplying the gluteus maximus, the overlying skin, and the sciatic nerve. The gangrenous changes were probably caused by vascular occlusion resulting from catheter-induced vasospasm of the inferior gluteal artery. Sciatic nerve palsy associated with umbilical artery catheterization has been postulated to be caused by vascular occlusion of the inferior gluteal artery. Infants of diabetic mothers may exhibit changes in coagulation factors and be at increased risk of thrombotic complications in utero and postnatally. In addition, maternal diabetes mellitus is associated with an increased incidence of congenital abnormalities, the incidence of which is 3 to 5 times higher than that among nondiabetic mothers. Although no particular or specific abnormalities have been associated with maternal disabilities, abnormalities of the cardiovascular system, including the development of umbilical vessels, frequently occur. This complication of umbilical artery catheterization has not been widely reported. We describe the first case that refers to gluteal gangrene and peroneal nerve palsy after umbilical artery catheterization of a newborn infant of a diabetic mother with poor blood glucose control. It should be noted that there were no contributing factors except that of the displacement of the catheter into the inferior gluteal artery. We speculate that the displacement of the tip of the catheter, with no difficulty in the present case, was associated with the maldevelopment of normal branching patterns of arteries after exposure of the fetus to hyperglycemia. In conclusion, umbilical artery catheterization is possibly associated with vascular occlusion, particularly in infants of diabetic mothers. Frequent inspection after the procedure has been performed is of the utmost importance especially in these neonates who often suffer from cardiopulmonary disease and require catheterization of their umbilical artery.
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PMID:Peroneal nerve palsy: a complication of umbilical artery catheterization in the full-term newborn of a mother with diabetes. 1192 39

Prader-Willi syndrome (PWS) is a sporadic disorder of chromosome abnormalities with an estimated prevalence of 1 in 15,000. It mainly affects the central nervous system, and often involves the hypothalamus. Both general and regional anesthesia for these patients is difficult mainly due to morbid obesity. Other common problems include hypotonia, disturbance in thermoregulation, arrhythmia, cor pulmonale, diabetes mellitus, behavior problems, and convulsions. We report on 2 pediatric patients with PWS receiving general anesthesia. The first patient experienced life-threatening episodes of severe hypoxemia in the postanesthesia care unit (PACU) as well as in the pediatric intensive care unit (PICU). Nasal continuous positive airway pressure (CPAP) was suggested by the pediatric pulmonary medicine specialist, and thereafter the patient's condition improved. The clinical course of the second patient was uneventful except for transient intermittent episodes of bronchospasms during emergence. In addition, we discuss differences between these 2 cases and our strategy for the prevention of perioperative complications for PWS patients in the future.
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PMID:Anesthesia for pediatric patients with Prader-Willi syndrome: report of two cases. 1295 94

To determine the safety of same-day discharge for patients who undergo combined nasal and palatal surgery for obstructive sleep apnea syndrome, we undertook a retrospective review and analysis of 2 groups of patients (total, 86 patients) who underwent such surgery. The patients with obstructive sleep apnea syndrome who underwent combined nasal and palatal surgery were considered for same-day discharge if they fulfilled the following postoperative criteria: sustained O2 saturation of 94% or greater on room air while asleep, no history of cardiopulmonary disease or diabetes mellitus, adequate oral analgesia and oral intake, hemostasis, and normal vital signs. Twenty-three patients met these criteria and were assigned to group 1. The remaining 63 patients were admitted overnight for monitoring and were assigned to group 2. The data collected included patient demographics, respiratory disturbance index, lowest O2 saturation, body mass index, and postoperative complications. The mean age, respiratory disturbance index, lowest O2 saturation, and body mass index for group 1 were 45.9 years, 36 events per hour, 84.9%, and 28.7 kg/m2, respectively. For group 2, the results were 48 years, 36.5 events per hour, 82%, and 32.5 kg/m2. There were no postoperative complications in group 1, and 3 in group 2. There were no incidents of airway compromise or cardiopulmonary events in the immediate postoperative period in either group. There were no readmissions for either group. We conclude that same-day discharge for patients who have undergone combined nasal and palatal surgery for obstructive sleep apnea syndrome is relatively safe in selected cases in which significant comorbid diseases are not present. These selected cases would have constituted a minority of the patients studied.
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PMID:Same-day discharge for selected patients undergoing combined nasal and palatal surgery for obstructive sleep apnea. 1499 68

In Rabson-Mendenhall syndrome, severe insulin resistance is caused by defective insulin receptors. The patient studied lacks insulin receptor binding due to a truncation mutation of one allele and a point mutation of the other allele of the insulin receptor alpha-subunit. He developed pulmonary hypertension and cor pulmonale, and was considered for organ transplantation. A trial of prednisone 1.2 mg/kg/d was initiated to determine if he could tolerate immunosuppressive therapy without deterioration of his pre-existing, difficult to control diabetes mellitus. Insulin responsiveness was measured prior to and after 4 d of glucocorticoid administration ('Before GC' and 'After GC') using the hyperinsulinemic glucose clamp and stable isotope tracer dilution techniques. After a 12-h fast and 24 h of intravenous insulin, a primed continuous infusion of 6,6-(2)H(2)-glucose was administered during a 2-h tracer equilibration period followed by a 2-h insulin-deficient period, and a 2-h hyperinsulinemic glucose clamp period during which insulin was infused at 7 u/kg/h. Blood glucose concentrations during the basal periods, while no insulin was infused, were 245+/-7 and 138+/-8 mg/dL in the studies Before GC and After GC, respectively. During both hyperinsulinemic glucose clamp periods, the blood glucose was 171+/-1 and 167+/-5 mg/dL, respectively. Hepatic glucose production (HGP) was higher during the basal period Before GC than during the same period After GC (7.86+/-0.23 vs. 5.31+/-0.19 mg/kg/min). HGP rate was suppressed by insulin to 1.48+/-0.45 mg/kg/min Before GC, but was not suppressed After GC (4.19+/-0.81 mg/kg/min). The hyperinsulinemic glucose clamp did not increase the glucose utilization rate nor the glucose clearance rate over basal in either Before GC or After GC, indicating complete peripheral insulin resistance. In summary, the liver showed some response to insulin in the absence of insulin receptors but the peripheral tissues had no response to insulin. Glucocorticoids worsened insulin resistance in the liver in this patient.
Pediatr Diabetes 2000 Jun
PMID:Defective insulin receptors in Rabson-Mendenhall syndrome cause complete peripheral insulin resistance but minimal hepatic insulin response remains. 1501 31

Cigarette smoking is associated with a number of adverse health effects, including well-established links to cardiopulmonary disease and several cancers. Some of the other important systemic diseases associated with smoking are the subjects of this article, such as diabetes mellitus and insulin resistance and thyroid diseases. Also reviewed here is the negative impact of smoking on male and female infertility, on selected dermatologic conditions, and on gastrointestinal diseases including peptic ulcer and inflammatory bowel diseases.
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PMID:Smoking and systemic disease. 1546 6

Ongoing research in obstructive sleep apnea (OSA) suggests strong associations with cardiopulmonary disorders. There is an abundance of studies describing physiological pathways in OSA that acutely impact the cardiovascular system. These mechanisms, if proven to carry over into the daytime hours, could form the basis for clinical disease. The challenge remains in disentangling these mechanistic processes from the many comorbid conditions often present in patients with OSA. Examples include male gender, obesity, and diabetes mellitus, all of which exert their own influence on the development of cardiopulmonary disease. This review discusses some of the physiological mechanisms associated with disordered breathing during sleep and explores putative cardiopulmonary disease associations.
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PMID:Cardiopulmonary consequences of obstructive sleep apnea. 1605 15

Cigarette smoking is associated with a number of adverse health effects, including well-established links to cardiopulmonary disease and several cancers. Some of the other important systemic diseases associated with smoking are the subjects of this article, such as diabetes mellitus and insulin resistance, and thyroid diseases. Also reviewed here is the impact of smoking on male and female infertility, on selected dermatologic conditions, and on gastrointestinal diseases including peptic ulcer and inflammatory bowel diseases.
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PMID:Smoking and systemic disease. 1644 61

Odds of major depression have significantly increased among adults with chronic diseases. However, the diagnosis of depression is often unrecognized in China. To know the prevalence of depression in medical inpatients with different chronic diseases and to assess the level of unrecognized depression among hospitalized patients, we assessed depression in patients with cardiovascular disease, diabetes, and chronic pulmonary heart disease. In this study, it has been shown that 78.9% of patients with pulmonary heart disease, diabetes, hypertension, or coronary heart disease have different levels of depression. There were no significant differences in incidence of depression among different gender, age, education levels, marital status, or course of disease. There were no significant differences in total incidence rate of depression and in incidence rate of different levels of depression among the three groups of patients. It is very important to help patients with chronic diseases to reduce their depression by psychological nursing after evaluating their mental status.
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PMID:Depression of chronic medical inpatients in China. 1820 55


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