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S Sriussadaporn

Publications and source records attributed to S Sriussadaporn.

At least 19 recordsLinked to original sources
PubMed2006

Body composition: gender-specific risk factor of reduced quantitative ultrasound measures in older people.

INTRODUCTION: Body composition has been reported as a significant determinant of bone mineral density. However, data regarding the relationship between the body composition and quantitative ultrasound (QUS) are scarce. METHODS: This cross-sectional study examined risk factors of reduced QUS measures in older men and women. A total of 699 subjects aged 60 years old and over-458 women and 241 men-who lived in rural communities of Thailand were randomly recruited. RESULTS: By using broadband ultrasound attenuation at the cutoff point of mean -1.0 SD based on young Thai people, the independent factors associated with reduced QUS measures in men were: poor activity of daily living, older age, and low fat mass. As for older women, the independent factors were the number of years since menopause, lack of regular exercise, lower height, and low fat mass. When using the stiffness index at the cutoff point of mean -1.6 SD based on young Thai people, the independent factors associated with reduced QUS measures in men were older age and low fat mass. Meanwhile, the number of years since menopause and low lean body mass were independent risk factors in women. CONCLUSIONS: Poor activity of daily living in men or lack of regular exercise in women was found to be a modifiable risk factor of reduced QUS measures. Years since menopause and low lean body mass were significant factors determining reduced QUS measures in women. Fat mass was an independent factor associated with reduced QUS measures both in men and women.

Activities of Daily Living↗
PubMed2003

Angiotensin converting enzyme inhibitor induced cough: experience in Siriraj Hospital.

With the increasing use of angiotensin converting enzyme inhibitors (ACEI) in the treatment of hypertension, particularly in diabetic patients, and heart failure, an annoying cough has frequently been observed. According to the post marketing surveillance studies, the prevalence of cough associated with ACEI was only 0.1-4 per cent. However, many recent studies have observed a very much higher frequency. To examine the incidence and pattern of cough associated with the usage of ACEI (C-ACEI) in a Thai population, mixed retrospective and prospective studies were performed in hypertensive patients who attended the out-patient department, Siriraj Hospital between December 1999 and August 2000. A thousand cases who had used or have been using ACEI were studied. C-ACEI was present in 179 cases of 760 retrospective studied cases (23.6%) and 75 cases of 240 prospective studied cases (31.3%). Cough was typically described as irritative (93.8% retrospectively and 98.7% prospectively, p = 0.05) and nocturnal in onset (74.9% retrospectively and 80% prospectively, p = 0.12), and usually appeared within the first 4 weeks of treatment (41.3% retrospectively and 46.7% prospectively, p = 0.43). Patients who received a full dosage of ACEI did not have to posses an increasing risk of C-ACEI. There was no difference in the prevalence of C-ACEI among types of ACEI, except cilazapril and quinapril which were found to be higher than enalapril in the retrospective study (p < 0.0001 and p = 0.002, respectively). Types of study were shown to influence the prevalence of C-ACEI. Prospective studies yielded a higher rate of C-ACEI than retrospective ones.

Adult↗
PubMed2001

Effect of maternal hyperthyroidism during late pregnancy on the risk of neonatal low birth weight.

OBJECTIVE: Hyperthyroidism in pregnancy occurs with a prevalence of 0.05--0.2% and has been shown to affect neonatal outcomes. Fetal weight increases markedly during the third trimester of pregnancy. This retrospective study was performed to examine the effect of maternal hyperthyroidism during late pregnancy on neonatal birth weight (NBW). DESIGN: Medical and obstetric records of 293 pregnant women with present and past history of hyperthyroidism were retrospectively reviewed. PATIENTS: There were 188 records of 181 patients with adequate data for inclusion in the analysis. The patients were divided into two groups according to the maternal thyroid function during the third trimester of pregnancy: hyperthyroidism (HT; 35 cases) and euthyroidism (ET; 153 cases). MEASUREMENTS: Maternal thyroid function tests were periodically evaluated before and during the third trimester of pregnancy. Neonatal thyroid function tests and birth weight of the newborn infants were also assessed. RESULTS: There was no significant difference of maternal age between HT and ET groups mean +/- SD (27.6 +/- 5.5 vs. 29.2 +/- 5.4 years). The NBW of the HT group was not significantly different from that of the ET group (2880 +/- 590 vs. 3019 +/- 426 g). However, the prevalence of infants with low birth weight (LBW) defined as NBW of lower than 2500 g in HT group was 22.9% which was significantly higher than the 9.8% in the ET group (P = 0.039, OR = 2.7, 95%CI = 1.1--7.1) and 9.7% of infants born to healthy mothers at Siriraj Hospital (control group) between 1991 and 1995 (P = 0.01, OR = 2.7, 95%CI = 1.3--6.1). The 90% CI for the true difference between the prevalence of LBW infants born to ET and HT mothers was 0.7--25.4. There was no significant difference in the prevalence of LBW infants in ET and control groups. Multiple logistic regression analyses showed that maternal hyperthyroidism during the third trimester of pregnancy was an independent factor associated with increased prevalence of LBW infants (P = 0.037, OR = 4.1, 95%CI = 1.1--15.0). CONCLUSIONS: Maternal hyperthyroidism during the third trimester of pregnancy independently increases the risk of low birth weight by 4.1-fold. Appropriate management of hyperthyroidism throughout pregnancy is essential in the prevention of this undesirable neonatal outcome.

Adult↗
PubMed2001

Efficacy of single daily dosage of methimazole vs. propylthiouracil in the induction of euthyroidism.

OBJECTIVE: Previous studies of the treatment of hyperthyroidism with a single daily dose of antithyroid drugs have demonstrated a favourable result with methimazole (MMI). However, the efficacy of a single daily dose of propylthiouracil (PTU) was inconsistent. The present prospective randomized study was conducted to compare the efficacy of a single daily dose of MMI and PTU in the induction of euthyroidism in patients with Graves' disease. SUBJECTS: Seventy-one patients with newly diagnosed Graves' disease were studied. METHODS AND MEASUREMENTS: Patients were randomized to two groups to receive once daily dose of either 15 mg MMI or 150 mg PTU for 12 weeks. The therapeutic efficacy was determined biochemically by serum total T3, total T4 and TSH levels at baseline and at 4, 8 and 12 weeks during the study period. RESULTS: There was no significant difference in baseline characteristics. Serum total T3 levels of the MMI group were significantly lower than those of the PTU group after four weeks of the treatment (3.54 +/- 0.72 vs. 5.49 +/- 2.74 nmol/l, P < 0.05) through the end of the study (2.22 +/- 1.42 vs. 4.30 +/- 1.78 nmol/l, P < 0.05). The changes in serum total T4 levels occurred in the same direction as serum total T3 levels but a significant difference was observed only after eight weeks of the treatment (MMI vs. PTU; 101.67 +/- 54.05 vs. 176.32 +/- 66.92 nmol/l, P < 0.05). At the end of the study, more patients in the MMI group had both serum total T3 and T4 levels less than the upper limit of the normal range compared to the PTU group (77.1% vs. 19.4%). Hypothyroidism was observed in 31.4% of the patients in the MMI group but not in the PTU group. CONCLUSIONS: During 12-weeks' treatment of Graves' hyperthyroidism, a single daily dose of 15 mg of MMI was much more effective in the induction of euthyroidism than a single daily dose of 150 mg of PTU. Once daily regimen of MMI not only decreased serum T3 and T4 levels more rapidly but also induced euthyroidism four times more effectively than did the once daily regimen of PTU. In the doses used in this study, MMI is preferable to PTU when a once-daily regimen of antithyroid drug is considered for the treatment of hyperthyroidism.

Adult↗
PubMed2001

Anesthesia and laparoscopic adrenalectomy for primary aldosteronism.

Adrenalectomy is the curative treatment of primary aldosteronism or Conn's syndrome. Laparoscopic adrenalectomy, a new method, should result in less pain and shorter hospitalization. We reported 25 patients who received anesthesia and laparoscopic adrenalectomy from 1995-1999. There were 17 females and 8 males. The mean age was 41.9 years (range 25-59). Ninety-six per cent had hypertension, 76 per cent had weakness of the extremities. When these patients sought medical care, their serum potassium and bicarbonate were 2.4 and 30.9 mEq/l respectively. Before operation, after treatment with spinorolactone, they were 4.3 and 24.4 mEq/l respectively. Associated diseases and cardiovascular abnormalities were reported. General anesthesia was the anesthetic technique of choice. Laparoscopic adrenalectomy was described in detail. Sixteen patients had adenomas on the left adrenal gland, 9 were on the right. Twenty-four patients had unilateral adrenalectomy, one had enucleation of the tumor. The size of the adenoma was 1.8 cm (range 1-3). There was no morbidity or mortality. All patients were discharged on the third postoperative day.

Adenoma↗
PubMed2001

Surgery of the abdominal aorta: experience of a university hospital in Thailand.

One hundred and thirty two patients who underwent aortic surgery at King Chulalongkorn Memorial Hospital, Bangkok, Thailand from January 1991 to December 2000 were studied. Twenty three patients (17.4%) were aged less than 60 years, 102 (77.3%) aged 60-80 years, and 7 (5.3%) were older than 80 years. Ninety eight patients (74.2%) underwent elective operations and 34 (25.8%) underwent emergency operations. Elective abdominal aortic aneurysms (AAA) repair was the most common indication for abdominal aortic surgery (56.0%). Eighteen patients (13.6%) underwent surgery for infected AAA. The incidence of infected AAA was 16.1 per cent among patients with AAA. Fifteen patients (11.4%) had ruptured AAA and 19 patients (14.4%) had aortoiliac occlusive disease. The overall mortality rate was 15.2 per cent. The mortality of elective aortic surgery was 5.1 per cent and of emergency aortic surgery was 44.1 per cent. The mortality of elective AAA repair was 4 per cent. Multiple system organ failure was the most common cause of death (80%), followed by acute myocardial infarction (10%) and exsanguination (10%). The authors conclude that elective surgery on the abdominal aorta is safe and should be performed when indicated to prevent the development of complications requiring emergency surgery which carries a much higher risk.

Adult↗
PubMed2000

Abdominopelvic vascular injuries.

The clinical records of 25 patients with 32 abdominopelvic vascular injuries were reviewed. Sixty per cent of patients sustained blunt trauma and 40 per cent sustained penetrating trauma. Nineteen patients (76%) were in shock on arrival, 2 of them underwent ER thoracotomy when they first arrived in the emergency room. Nine patients (36%) had signs of lower extremity ischemia. The Injury Severity Score (ISS) ranged from 16-50, mean 29 +/- 10.0. Nineteen patients (76%) had 35 associated injuries. Of the 32 injured vessels; 8 were external iliac artery, 5 were renal vein, 4 were abdominal aorta, 3 were common iliac artery, common iliac vein, external iliac vein and inferior vena cava, and 1 was superior mesenteric artery, superior mesenteric vein and median sacral artery. Treatments included: 13 lateral repair, 4 prosthetic grafting, 4 nephrectomy, 3 ligation, 3 reversed saphenous vein grafting, 2 end to end anastomosis, 1 internal iliac artery grafting, 1 intravascular shunt and packing and 1 perihepatic packing. Nine patients (36%) died. High mortality was observed in injuries to the abdominal aorta (75%), inferior vena cava (66.7%), common iliac vein (66.7%) and associated major pelvic fractures (50%). Factors significantly associated with mortality were the presence of shock on arrival, associated injuries and high Injury Severity Score. The author concludes that short prehospital time, effective resuscitation and proper surgical decision making are important for survival in these critically injured patients.

Abdominal Injuries↗
PubMed2000

Significance of a widened mediastinum in blunt chest trauma patients.

Eighteen blunt chest trauma patients who had mediastinal widening on chest roengenogram were studied for the correlation with traumatic ruptured of the aorta or its major branches. Seventeen patients were male and one was female. The age ranged from 18 to 39 years, mean 26.17+/-6.85SD. The Injury Severity Score (ISS) ranged from 9 to 34, mean 25.5+/-6.49SD. Fourteen patients (77.8%) sustained motorcycle accidents, 3 patients (16.7%) sustained car accidents and 1 patient (5.5%) fell from a 4 storey building. All patients underwent aortography to search for traumatic rupture of the aorta or its major branches. Six patients had computed tomography of the chest before aortography. Nine patients (50%) had normal aortography. The remaining 9 patients who had positive aortography underwent urgent thoracotomies, 8 of them had traumatic rupture of the aorta or its major branches, the remaining 1 patient had normal operative finding. Of the 8 patients who had traumatic rupture of the aorta or its major branches, 1 patient died. The mortality was 12.5 per cent. The rate of traumatic rupture of the aorta or its major branches in patients who had blunt chest trauma and widening of the mediastinum on chest roengenogram in our study was 44.4 per cent. The sensitivity of aortography for diagnosis of traumatic rupture of the aorta or its major branches was 100 per cent and the specificity was 90 per cent. On the basis of this study, we conclude that blunt chest trauma patients with widened mediastinum on chest roengenogram have a significantly high rate of traumatic rupture of the aorta or its major branches. All blunt chest trauma patients who have widened mediastinum on chest reongenogram should undergo further investigations to exclude traumatic rupture of the aorta or its major branches. We recommend aortography as the investigation of choice due to its accuracy and usefulness in management plan.

Accidents, Traffic↗
PubMed1999

Somatostatin receptor tumor imaging (Tc 99m P829) in pituitary adenoma.

Technetium 99m P829 (99mTc P829) is a somatostatin like structure labelled with Technetium-99m. Somatostatin receptor positive tumors such as pituitary tumors, neuroendocrine tumors, and lymphomas show positive scintigraphy. Eleven patients suspected of having a pituitary mass (12 studies) were studied with 99mTc P829. Three pituitary adenoma patients (4 studies) showed positive somatostatin receptor tumor imaging. Eight negative somatostatin receptor scintigraphy were one hypothyroid induced pituitary hyperplasia, one craniopharyngioma, one normal pituitary tissue with focal hyperplasia, one ACTH secreting pituitary tumor, one GH, PRL secreting pituitary tumor post transphenoidal partial tumor removal, and no surgery in 3 patients. Finally, somatostatin receptor imaging may be useful as a tumor localizing technique in addition to conventional CT and MRI imaging and identify patients who might potentially benefit from octreotide treatment. In addition, the development of peptide analogs coupling to beta-emitting radiopharmaceutical may lead to a situation in which diagnosis peptide receptor scintigraphy can be followed by radionuclide therapy.

Adenoma↗
PubMed1999

Acute pancreatitis following resection of juxtarenal abdominal aortic aneurysm.

A case of acute pancreatitis following resection of a juxtarenal abdominal aortic aneurysm is reported. The patient was a 73 year old man who underwent resection of a juxtarenal abdominal aortic aneurysm. The aneurysm was repaired with a 20 mm. gelatin coated Dacron graft. Proximal control of the aneurysm was performed with supraceliac aortic cross clamping. The clamping time was 50 minutes. Postoperatively, he developed progressive abdominal distension with deterioration of renal and pulmonary function necessitating relaparotomy on the 7th postoperative day. The second operation revealed evidence of saponification and fat necrosis in the omentum. The pancreas was edematous and swollen compatible with acute pancreatitis. The aortic graft and other intraabdominal organs appeared normal. Despite intensive supportive care, the patient died 2 weeks later from multiple system organ failure. The possible causes of acute pancreatitis following aortic surgery described in the literature are 1. systemic and regional hypoperfusion, 2. atheromatous emboli to arteries supplying the pancreas and 3. direct trauma to the pancreas during the operation from retractors or surgical dissection. All of which may be the etiology of acute pancreatitis in our patient. Avoidance of such factors during aortic surgery is recommended to prevent this potentially fatal complication.

Acute Disease↗
PubMed1998

Evaluation of the new fasting plasma glucose cutpoint of 7.0 mmol/l in detection of diabetes mellitus in the Thai population.

To determine whether a fasting plasma glucose (FPG) cutpoint of 7.0 mmol/l can be appropriately used for detection of diabetes mellitus (DM) in the Thai population, different FPG cutpoints were evaluated for their efficacy in the diagnosis of DM. A plasma glucose level of > or = 11.1 mmol/l at 2 h after a 75-g oral glucose tolerance test (OGTT) was used as the gold standard criterion for diagnosis of DM. OGTT was performed in 496 subjects who were at risk of developing diabetes. They were 120 males and 376 females, 14-76 years old (mean +/- S.D. = 45.0 +/- 12.2 years). Plasma glucose level was determined in NaF preserved plasma using the glucose oxidase method. Diagnosis of DM was made in 22.8% of cases by the gold standard criterion as compared to 4.2% by using FPG values of > or = 7.8 mmol/l. The sensitivity of the FPG cutpoint of 7.8 mmol/l was 18.6%. Diagnosis of DM using FPG > or = 7.0 mmol/l improved the sensitivity to 33.6% with a positive predictive value of 100% and highest Youden's index of 0.836. The receiver operating characteristic curve of FPG revealed the best cutpoint to lie between 5.6-6.0 mmol/l. A FPG cutpoint of < 6.0 mmol/l over-estimated the prevalence of diabetes. DM and impaired glucose tolerance were noted in 65.6 and 29.5% of the subjects who had FPG values between 6.0 and 6.9 mmol/l, respectively. We conclude that FPG cutpoint of 7.0 mmol/l is applicable to a high risk Thai population for detection of DM. OGTT is recommended for definitive determination of glucose tolerance status in those individuals with FPG values between 6.0 and 6.9 mmol/l.

Adolescent↗
PubMed1998

Behavior in self-care of the foot and foot ulcers in Thai non-insulin dependent diabetes mellitus.

A cross sectional study was conducted to examine behavior in self-care of the foot and foot ulcers in Thai non-insulin dependent diabetic patients. Fifty-five patients with foot ulcers (ulcer group; 42 females and 13 males) and 110 patients without foot ulcers (control group; 83 females and 27 males) were evaluated for self foot-care behavior using a questionnaire consisting of questions about foot inspection, foot cleaning, nail-care, and the use of footwear which possessed a total score of 20. The results showed that a mean total self foot-care score of the ulcer group was significantly lower than that of the control group (14.50 +/- 3.35 vs 15.74 +/- 2.31; p < 0.01). The patients with foot ulcers had lower mean scores in all of the four self foot-care categories than did those without foot ulcers. However, only the difference in foot cleaning score was statistically significant (7.35 +/- 0.21 vs 7.88 +/- 0.11; p < 0.05). A univariate analysis has shown that the risk of developing foot ulcers was significantly associated with a total self foot-care score of less than 15 with an odd ratio of 2.6 and a 95 per cent confidence interval of 1.3-5.6. Regarding the behavior in self foot ulcer-care, 45.5 per cent of the diabetic patients with foot ulcers had neglected them and 54.5 per cent had inappropriately cared for their ulcers. In conclusion, Thai non-insulin dependent diabetic patients with foot ulcers understood less about self foot-care practice than did those without foot ulcers. Incorrect self foot-care behavior particularly foot cleaning is associated with an increased risk of foot ulceration. In addition, diabetic patients should be advised about the correct self-care of their feet and foot ulcers in order to prevent foot ulceration and its complications.

Chi-Square Distribution↗
PubMed1997

Factors associated with diabetic foot ulceration in Thailand: a case-control study.

A case-control study was conducted to determine factors involved in foot ulceration in Thai non-insulin-dependent (Type 2) diabetic patients. Fifty-five patients with foot ulcers (42 females and 13 males) and 110 patients without foot ulcers (83 females and 27 males) were evaluated for 26 factors possibly associated with foot ulceration. The results showed that diabetic patients with foot ulcers had significantly lower diabetic knowledge and foot-care practice scores; poorer glycaemic control, renal function, and visual function, and higher prevalence of retinopathy and peripheral neuropathy than diabetic patients without foot ulcers, whereas there were no differences in peripheral vascular status between both groups, each having a low prevalence. Multiple logistic regression analyses indicated that the risk of developing foot ulcers was associated with only three factors which were peripheral nerve status as determined by somatosensory evoked potentials (OR = 1.67; 95% CI 0.31 -8.97), visual acuity (OR = 0.223 per unit decrease in decimal visual acuity; 95% CI = 0.005, 0.39) and fasting plasma glucose level (OR = 1.01 per mmol l-1 increase; 95% CI = 1.00, 1.02). We conclude that peripheral neuropathy, visual impairment, and poor glycaemic control, but not peripheral vascular insufficiency, are the major independent risk factors associated with foot ulceration in Thai diabetic patients.

Adult↗
PubMed1997

Insulin-like growth factor I increases renal 1,25(OH)2D3 biosynthesis during low-P diet in adult rats.

Dietary P restriction increases renal 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] biosynthesis through stimulation of proximal tubule 25-hydroxyvitamin D3-1 alpha-hydroxylase (1-OHase). Because insulin-like growth factor I (IGF-I) is required for 1-OHase stimulation by low-P diet (LPD) and because 1-OHase stimulation by low-Ca diet and parathyroid hormone is lost with aging, studies were undertaken to determine whether 1-OHase activity during LPD is impaired with age and whether IGF-1 can increase 1-OHase activity in adult rats. Five days of LPD increased in vitro 1-OHase activity in young (97.3 +/- 13.5 vs. 49.7 +/- 6.8 pg.mg protein-1.5 min-1, P < 0.005) but not adult (42.3 +/- 5.37 vs. 41.2 +/- 8.9) rats. In LPD-fed adult rats, recombinant human IGF-I (rhIGF-I, 1.4 mg.kg body wt-1.day-1) for 72 h increased 1-OHase (65.2 +/- 5.88 vs. 95.1 +/- 7.26 pg.mg protein-1.5 min-1, P < 0.005). The results show that the rise in 1-OHase activity during LPD is lost in adult rats and that rhIGF-I can overcome the inhibition and stimulate renal 1-OHase activity to levels observed in young animals. The studies indicate that the age-related loss of 1-OHase activity is reversible.

25-Hydroxyvitamin D3 1-alpha-Hydroxylase↗
PubMed1997

Arterial injuries of the lower extremity from blunt trauma.

Thirty patients with 33 arterial injuries from blunt trauma of the lower extremity at Chulalongkorn Hospital, Bangkok, Thailand from January 1989 to December 1995 were reviewed. Eight patients (26.6%) were in shock on arrival. Twenty four (80%) presented with signs of ischemia. Twenty six (86.7%) had associated fractures and/or dislocations, 14 of them were compound fractures. Nine (30%) had associated injuries at other parts of the body. Ten (33.3%) underwent preoperative angiography. The preoperative time ranged from 1 to 72 hours, median 4 hours. One patient who had intimal tear of the popliteal artery and was successfully treated conservatively. Popliteal artery was the most common injured artery; followed by common femoral, superficial femoral, and anterior tibial artery. Most arterial injuries were repaired by using reversed saphenous vein grafts. Associated venous injuries were repaired in 5 patients. Fracture fixation was performed in 18 patients; 8 of them were performed before arterial repair and 10 were performed after arterial repair. No intravascular shunt was inserted in this study. Fasciotomy was performed in 15 patients. Five patients had limb amputation (16.7%). Univariate analysis by Chi Square test revealed that associated venous injuries, severe soft tissue injuries, and fasciotomy were statistically significant factors associated with amputation. One patient who had external iliac artery injury died from severe head injury in spite of a successful arterial repair (mortality rate 3.3%).

Adolescent↗
PubMed1997

Vascular injuries of the upper arm.

Twenty eight patients who had subclavian, axillary, and brachial artery injuries were studied. Sixteen (57%) sustained blunt trauma and 12 (43%) sustained penetrating trauma. Motor cycle accidents were the most common cause of injuries (43%). Twenty patients (71.4%) were transferred from other hospitals. Nine patients (32%) were in shock on arrival. All patients had radial pulse abnormalities (3 decreased, 25 absent) of the affected limbs. Eighteen patients (64%) had associated injuries to other parts of the body. Eighteen patients (64%) also had associated nerve injuries, 7 of them had complete brachial plexus injuries from motor cycle accidents. Twelve patients (43%) had preoperative angiography. Twelve patients (43%) had brachial, 10 (35.7%) had axillary, 2 (7%) had axillary-subclavian, and 4 (14%) had subclavian artery injuries. Eight patients (28.6%) had concomitant venous injuries. Resection of the injured artery and reversed saphenous vein graft were performed in 23 patients (82%). The remaining had resection and end to end anastomosis in 3 patients (10.7%), lateral repair in 2 patients (7%), and ligation in 1 patient (3.6%). Concomitant venous repairs were performed in 5 patients. Fasciotomies were performed in 2 patients (7%). Excellent results of vascular repairs were obtained in all patients. Long-term disability occurred in patients who had associated nerve injuries. Avulsion injury of the brachial plexus usually resulted in severe impairment of limb function.

Adolescent↗
PubMed1997

Efficacy of using basal plasma adrenocorticotropic hormone-radioimmunoassay (ACTH-RIA) level in the identification of the cause of Cushing's syndrome.

Basal (8.00 a.m.) plasma ACTH-radioimmunoassay (ACTH-RIA) levels were studied in 32 cases of endogenous Cushing's syndrome (17 Cushing's disease, 13 adrenocortical tumors, and 2 ectopic ACTH syndrome) and 11 normal volunteers. There were overlaps in the ranges of plasma ACTH-RIA levels among patients with Cushing's disease, adrenocortical tumors, and normal volunteers but not ectopic ACTH syndrome. By using different plasma ACTH-RIA levels as cut-off points in differentiating ACTH-dependent from ACTH-independent Cushing's syndrome, the level of 30 pg/ml had the highest diagnostic efficacy with a 94.7 per cent sensitivity, a 84.6 per cent specificity and a 90.6 per cent diagnostic accuracy.

Adolescent↗