scholarly journals Day 5 Morning Serum Cortisol Predicts Hypothalamic-Pituitary-Adrenal Function after Transsphenoidal Surgery for Pituitary Tumors

2009 ◽  
Vol 55 (5) ◽  
pp. 972-977 ◽  
Author(s):  
Channa N Jayasena ◽  
Kunal A Gadhvi ◽  
Bhavini Gohel ◽  
Niamh M Martin ◽  
Nigel Mendoza ◽  
...  
Keyword(s):  
Adrenal Insufficiency ◽  
Transsphenoidal Surgery ◽  
Pituitary Tumors ◽  
Serum Cortisol ◽  
Tolerance Test ◽  
Cortisol Concentration ◽  
Correct Identification ◽  
Secondary Adrenal Insufficiency ◽  
Hypothalamic Pituitary Adrenal ◽  
Hpa Function

Abstract Background: Adrenal insufficiency is a complication of transsphenoidal surgery (TSS) for pituitary adenoma, and correct identification of patients requiring glucocorticoid replacement is important. Controversy exists over which early postoperative 9 AM cortisol concentration reliably predicts hypothalamic-pituitary-adrenal (HPA) axis reserve, as defined by the insulin tolerance test (ITT). Methods: Data were reviewed for 36 patients undergoing TSS followed by day 5 postoperative 9 AM cortisol measurement and ITT 6 weeks postsurgery. All patients received postoperative glucocorticoid replacement, which was discontinued if the 9 AM serum cortisol was >300 nmol/L. Results: Of 23 patients who failed the ITT (peak cortisol <500 nmol/L), 20 also had a day 5, 9 AM serum cortisol <300 nmol/L. Nine of 13 patients who passed the ITT had a day 5, 9 AM cortisol >300 nmol/L. The cutoff cortisol concentration of 300 nmol/L had 86.9% (66.4%–97.2%) diagnostic sensitivity, 69.2% (38.6%–90.9%) diagnostic specificity, and 83.3% (61.8%–94.5%) positive predictive value (PPV) for detecting secondary adrenal insufficiency. Increasing the cutoff to 392 nmol/L resulted in 100% (85.2%–100%) sensitivity, 46.1% (19.2%–74.9%) specificity, and 76.6% (57.3%–89.4%) PPV. Decreasing the cutoff to 111 nmol/L resulted in 100% (75.3%–100%) specificity and 100% (67.9%–100%) PPV, although sensitivity was 47.8% (26.8%–69.4%). Conclusions: A day 5 post-TSS 9 AM serum cortisol <111 nmol/L reliably detects secondary adrenal insufficiency, and concentrations >392 nmol/L support intact HPA function. Because concentrations of 111–392 nmol/L are poorly predictive of HPA function, glucocorticoid replacement should continue in such cases until definitive testing is performed using an ITT.

scholarly journals Reduced epinephrine reserve in response to insulin-induced hypoglycemia in patients with pituitary adenoma

2007 ◽  
Vol 157 (3) ◽  
pp. 265-270 ◽  
Author(s):  
Shinya Morita ◽  
Michio Otsuki ◽  
Maki Izumi ◽  
Nobuyuki Asanuma ◽  
Shuichi Izumoto ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Adrenal Insufficiency ◽  
Serum Cortisol ◽  
Tolerance Test ◽  
Secondary Adrenal Insufficiency ◽  
Counterregulatory Hormones ◽  
Insulin Tolerance ◽  
Secondary Hypothyroidism ◽  
Severe Impairment ◽  
Plasma Gh

Objective: Hypoglycemia induces rapid secretion of counterregulatory hormones such as catecholamine, glucagon, cortisol, and GH. Insulin-induced hypoglycemia is used for evaluating GH–IGF-I and ACTH–adrenal axes in patients with pituitary disorders. The aim of this study was to determine whether the response of catecholamine secretion to hypoglycemia is disrupted in patients with pituitary adenoma. Methods: The study population comprised 23 patients with pituitary adenoma (non-functioning adenoma or prolactinoma). An insulin tolerance test was performed and serum catecholamines as well as plasma GH and serum cortisol were measured. Results: The study patients showed diminished response of plasma epinephrine to insulin-induced hypoglycemia. With the cutoff level of peak epinephrine for defining severe impairment set at 400 pg/ml, more patients with secondary adrenal insufficiency showed severe impairment of the epinephrine response than did those without it. Peak epinephrine levels to insulin-induced hypoglycemia were significantly correlated with peak cortisol levels. In patients with secondary hypothyroidism, secondary hypogonadism, GH deficiency, or diabetes insipidus, the prevalence of severe impairment of the epinephrine response was similar to that in patients without these deficiencies. Conclusions: Impaired epinephrine secretion in response to insulin-induced hypoglycemia was frequently observed in patients with pituitary adenoma. This disorder was especially severe in patients with secondary adrenal insufficiency.

MORNING SERUM CORTISOL LEVEL PREDICTS CENTRAL ADRENAL INSUFFICIENCY DIAGNOSED BY INSULIN TOLERANCE TEST

2021 ◽  
Author(s):  
Valentina Gasco ◽  
Chiara Bima ◽  
Alice Geranzani ◽  
Jacopo Giannelli ◽  
Lorenzo Marinelli ◽  
...  
Keyword(s):  
Adrenal Insufficiency ◽  
Serum Cortisol ◽  
Tolerance Test ◽  
Insulin Tolerance Test ◽  
Cortisol Concentration ◽  
Serum Cortisol Level ◽  
Cortisol Response ◽  
Insulin Tolerance ◽  
Morning Serum Cortisol ◽  
Serum Cortisol Concentration

Introduction According to guidelines, a morning serum cortisol level <83 nmol/L is diagnostic for central adrenal insufficiency (CAI), a value >414 nmol/L excludes CAI, while values between 83 and 414 nmol/L require stimulation tests. However, there are no currently reliable data on morning serum cortisol for prediction of cortisol response to insulin tolerance test (ITT). Objective Using the receiver operating characteristic curve analysis, the purpose of this study was to detect the morning serum cortisol cut-off with a specificity (SP) or a sensitivity (SE) above 95% that identify those patients who should not be tested with ITT. Methods We included 141 adult patients (83 males) aged 42.7+/-12.3 (mean +/- SD) years old. Based on serum cortisol response to ITT, patients have been divided in two groups: subjects with CAI (peak serum cortisol <500 nmol/L; 65 patients) and subjects with preserved adrenocortical function (peak cortisol >500 nmol/L; 76 patients). Results The best morning cortisol cut-off, in terms of SE (87.7%) and SP (46.1%), was ≤323.3 nmol/L. The cut-off of morning serum cortisol concentration that best predicted a deficient response to ITT was ≤126.4 nmol/L (SE 13.8%, SP 98.7%). The cut-off of morning serum cortisol concentration that best predicted a normal response to ITT was >444.7 nmol/L (SE 96.9%, SP 14.5%). Conclusions This is the first study that identifies a morning serum cortisol cut-off that best predict the response to ITT in order to simplify the diagnostic process in patients with suspected CAI. A new diagnostic flow chart for CAI is proposed.

National German Audit of Diagnosis, Treatment, and Teaching in Secondary Adrenal Insufficiency

2017 ◽  
Vol 49 (08) ◽  
pp. 580-588 ◽  
Author(s):  
Stephan Petersenn ◽  
Jürgen Honegger ◽  
Marcus Quinkler
Keyword(s):  
Clinical Practice ◽  
Adrenal Insufficiency ◽  
Replacement Therapy ◽  
Diagnostic Testing ◽  
Treatment Strategies ◽  
Serum Cortisol ◽  
National Audit ◽  
Secondary Adrenal Insufficiency ◽  
Endocrine Society ◽  
Great Heterogeneity

AbstractGreat heterogeneity seems to exist regarding diagnosis, therapy, and teaching of patients with secondary adrenal insufficiency (SAI) across Germany resulting in different diagnosis and treatment strategies. The aim of the work was to present the first national audit on diagnosis, treatment, and patient teaching of SAI reflecting common clinical practice in Germany. A self-designed questionnaire was sent via e-mail to all members of the German Endocrine Society (approx. 120 centers). Returned questionnaires (response rate 38.3%) were checked for duplicity of institutions and analyzed. Diagnostic testing focuses on those patients with relevant risk for adrenal insufficiency. Basal serum cortisol is mostly used as screening test. Short synacthen and CRH tests are the preferred confirmatory tests, however, cut-off values vary due to different assays used. Patients with radiation, second surgery, progressive disease or new symptoms are followed by serial re-testing. Perioperative management and frequency of postoperative re-evaluations differ among centers. Hydrocortisone is the preferred glucocorticoid for replacement therapy, but daily doses vary considerably (10–30 mg/day). Some centers perform hormone measurements for dose adjustment of glucocorticoid replacement therapy whereas others rely on clinical judgement. Patients’ teaching is done in 84% of centers, but only half of the centers include patients’ relatives. Homogeneity exists in patients’ teaching regarding intercurrent illnesses (fever, diarrhoea). Recommendations regarding dose adaptations in situations such as sport-activities, dental-procedures, or coughing are highly variable. This first national audit reveals great heterogeneity among German centers and could improve patients’ care in SAI, for example, by initiating new trials and developing clinical practice guidelines.

Postoperative Serum Cortisol Concentration and Adrenal Insufficiency in Neonates Undergoing Open-Heart Surgery

2012 ◽  
Vol 3 (2) ◽  
pp. 214-220 ◽  
Author(s):  
William C. Sasser ◽  
Stephen M. Robert ◽  
Waldemar F. Carlo ◽  
Santiago Borasino ◽  
Robert J. Dabal ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Adrenal Insufficiency ◽  
Postoperative Period ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Clinical Variable ◽  
Postoperative Serum ◽  
Serum Cortisol Concentration

Background: We sought to determine whether immediate postoperative serum cortisol concentration predicts adrenal insufficiency in neonates after cardiac surgery with cardiopulmonary bypass. We hypothesized that cortisol <10 µg/dL would be associated with increased catecholamine requirements and fluid resuscitation and would predict hemodynamic responsiveness to exogenous steroids. Methods: Retrospective study of 41 neonates was carried out for the levels of cortisol in the immediate postoperative period; of whom, 15 received steroids due to high levels of inotropic support. Laboratory and clinical outcomes were collected. Results: Median cortisol was 12 µg/dL (interquartile range: 5.2-27.4). Levels of cortisol <10 µg/dL was not associated with any clinical variable indicative of increased illness severity. Peak lactate (9.1 vs 11.8 mmol/L, P = .04) and maximum arteriovenous saturation difference ([Sao2 − Svo2] 28% vs 32%, P = .05) were both lower among patients with levels of cortisol <10 µg/dL. Six (40%) patients had a significant hemodynamic improvement within 24 hours after receiving steroids (responders), although there was no statistical difference between levels of cortisol in responders versus nonresponders. Level of cortisol was positively correlated with maximum lactate ( P < .001), maximum Sao2 − Svo2 ( P < .001), maximum inotrope score ( P = .014), initial 24-hour fluid intake ( P = .012), and time to negative fluid balance ( P = .008) and was negatively correlated with initial 24-hour urine output ( P < .001). Conclusions: Low cortisol obtained in the immediate postoperative period is not associated with worse postoperative outcomes or predictive of steroid responsiveness. In contrast, elevated levels of cortisol are positively correlated with severity of illness. The use of an absolute cortisol threshold to identify adrenal insufficiency and/or guide steroid therapy in neonates after cardiac surgery is unjustified.

scholarly journals Is the plasma ACTH concentration a reliable parameter in the insulin tolerance test?

2003 ◽  
pp. 535-541 ◽  
Author(s):  
K Borm ◽  
M Slawik ◽  
L Seiler ◽  
F Flohr ◽  
M Petrick ◽  
...  
Keyword(s):  
Hpa Axis ◽  
Healthy Subjects ◽  
Peak Plasma ◽  
Tolerance Test ◽  
Insulin Tolerance Test ◽  
Cortisol Concentration ◽  
Plasma Acth ◽  
Hypothalamic Pituitary Adrenal ◽  
Insulin Tolerance ◽  
Acth Concentration

OBJECTIVE: The insulin tolerance test (ITT) is an established standardized test for the evaluation of the hypothalamic-pituitary-adrenal axis. While a peak cortisol value of >18 microg/dl is usually interpreted as a sufficient response to the ITT, the plasma ACTH response has not yet been standardized. METHODS: We evaluated retrospectively the peak plasma ACTH concentrations during 140 ITTs in 125 patients with suspected pituitary insufficiency and prospectively in 15 healthy subjects. RESULTS: All healthy subjects had a peak cortisol concentration >/=18 microg/dl; 32 of 125 tests in the patients showed an insufficient cortisol response (peak cortisol concentration <18 microg/dl). The peak stimulated ACTH concentration in patients with secondary adrenal insufficiency (SAI) was 49.2+/-37.2 pg/ml (mean+/-s.d.) vs 130.9+/-89.3 pg/ml in patients without SAI, and 110.9+/-55.4 pg/ml in normal subjects (P<0.001). There was a weak, but significantly positive correlation between the peak ACTH and peak cortisol concentrations (rho=0.446, P<0.001), but there was also a very wide spread of the values. Defining a cut-off value for the peak plasma ACTH concentration with a sufficient sensitivity and specificity to identify patients with an impaired hypothalamic-pituitary-adrenal (HPA) axis was not possible. A peak plasma ACTH <20 pg/ml as a cut-off value had a sensitivity of 25% and a specificity of 98% for SAI. A cut-off value of a peak plasma ACTH <140 pg/ml had a sensitivity of 97% but a low specificity of 39%. CONCLUSIONS: Although there is a significant positive correlation between the peak ACTH and the peak cortisol concentrations, we conclude that there is no additional benefit in determining the ACTH concentrations during an ITT. Because of the strong variations of the values, the peak ACTH concentration is a poor parameter for the evaluation of the HPA axis.

scholarly journals Mifepristone Accelerates HPA Axis Recovery in Secondary Adrenal Insufficiency

2016 ◽  
Vol 2016 ◽  
pp. 1-4 ◽  
Author(s):  
Pejman Cohan
Keyword(s):  
Adrenal Insufficiency ◽  
Hpa Axis ◽  
Adrenal Adenoma ◽  
Serum Cortisol ◽  
Pharmacological Therapy ◽  
Secondary Adrenal Insufficiency ◽  
Unilateral Adrenalectomy ◽  
Undetectable Serum ◽  
Biochemical Testing ◽  
Acth Secreting

Context. Transient secondary adrenal insufficiency (SAI) is an expected complication following successful adenomectomy of ACTH-secreting pituitary adenomas or unilateral adrenalectomy for cortisol-secreting adrenal adenomas. To date, no pharmacological therapy has been shown to hasten recovery of the hypothalamic-pituitary-adrenal (HPA) axis in this clinical scenario.Case Description. A 33-year-old woman underwent uncomplicated unilateral adrenalectomy for a 3.7 cm cortisol-secreting adrenal adenoma. Postoperatively, she developed SAI and was placed on hydrocortisone 15 mg/day, given in divided doses. In the ensuing six years, the patient’s HPA axis failed to recover and she remained corticosteroid-dependent. Quarterly biochemical testing (after withholding hydrocortisone for 18 hours) consistently yielded undetectable serum cortisol and subnormal plasma ACTH levels. While she was on hydrocortisone 15 mg/day, mifepristone was initiated and gradually titrated to a maintenance dose of 600 mg/day after 5 months. Rapid recovery of the HPA axis was subsequently noted with ACTH rising into the supranormal range at 4 months followed by a subsequent rise in cortisol levels into the normal range. After 6 months, the dose of hydrocortisone and mifepristone was lowered and both were ultimately stopped after 8 months. The HPA axis remains normal after an additional 16 months of follow-up.Conclusion. Mifepristone successfully restored the HPA axis in a woman with prolonged secondary adrenal insufficiency (SAI) after adrenalectomy for Cushing’s syndrome (CS).

scholarly journals The choice of the optimal secondary adrenal insufficiency screening method

2016 ◽  
Vol 62 (5) ◽  
pp. 74-75
Author(s):  
Alla E. Yudina ◽  
Tatyana Y. Tselovalnikova ◽  
Maria G. Pavlova ◽  
Nadezhda A. Mazerkina ◽  
Irina A. Arefyeva ◽  
...  
Keyword(s):  
Adrenal Insufficiency ◽  
Roc Analysis ◽  
Screening Method ◽  
Diagnostic Algorithm ◽  
Tolerance Test ◽  
Screening Methods ◽  
Grey Zone ◽  
Secondary Adrenal Insufficiency ◽  
Insulin Tolerance ◽  
Optimal Screening

Background. The insulin tolerance test (ITT) is the “gold standard” of the secondary adrenal insufficiency (SAI) diagnosis but it is rather difficult to carry out, has some contraindications and requires patient’s hospitalization. The availability of a reliable screening method could reduce the necessity of using ITT.Aim: to compare different methods of screening with ITT and to work out an optimal diagnostic algorithm of SAI.Methods. 40 patients (20 women) after craniospinal (CSI) irradiation in a doze 35 Gy were examined. The average age at the time of the observation was 19,5±3 years, at the time of treatment 12,5±3,5 years. Patient’s blood samples were collected for basal cortisol (BC), DHEA-S. ITT was performed for all patients, glucagon stimulation test (GST) was for 27 persons. Patients were divided into groups: SAI and without SAI (W-SAI) after ITT. ROC- analysis was conducted to identify the thresholds for BC, DHEA-S and GST. Cut-off points for BC and DHEA-S levels corresponding to 100% sensitivity (Se) for SAI group and 100% specificity (Sp) for W-SAI patients were estimated to select a group of patients which do not require stimulative tests. Linear regression was used to construct a predictive model (PM) of SAI occurrence after CSI.Results. 22/40 subjects failed ITT, 13/27 passed GST. 3 patients failed ITT but passed GST. Their level of neutrophils and monocytes was higher than the other patients'. SAI-patients had BC and DHEA-S lower than W-SAI (321±102 vs 516± 183; p=0,003 and 2,6±1,4 vs 5,1±2,1, p=0,003). ROC-analysis showed area under curve (AUC) for GST=0,91 with optimal cut-off for cortisol=489 which corresponds to 100% Sp and 62% Se. AUC was 0,83 for BC and 0,84 for DHEA-S.In 70% patients' BC was in a “grey zone” (32% of them passed ITT), 8% had BC lower than 200 (which corresponds to 100% Se) and 22% more than 499 (100% Sp). 50% of patients were in a “grey zone” for DHEA-S (50% of them had SAI), 18% had DHEA-S level below 2,0 and 32% above 4,7. A combination of BC and DHEA-S in the PM of SAI (0,592+0,001*BC+0,11*DHEA-S) had AUC 94%. This PM didn’t give the prognosis of SAI for 32% (CI: 18-49%) of patients. The addition of maximal cortisol (MC) level during GST (0,53+0,01*BC+0,066*DHEA-S+0,001*MC) increased AUC to 99% and didn’t allow to predict SAI in 8% (3,2% - 24,9%) of patients only.Conclusions. When the screening methods were used separately, they showed comparable accuracy and it was not high. The PM may be used as optimal screening method for SAI and may allow to use ITT more rarely. But further studies are required to validate the PM proposed in this study.

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