Comment diagnostiquer un excès de catécholamines ?

Un dosage sanguin ou urinaire des catécholamines peut confirmer l'excès.

Quels tests sont utilisés pour mesurer les catécholamines ?

Les tests sanguins et urinaires sont couramment utilisés pour mesurer les niveaux.

Quels symptômes indiquent un déséquilibre des catécholamines ?

Symptômes comme hypertension, palpitations et anxiété peuvent indiquer un déséquilibre.

Quelle imagerie peut aider au diagnostic ?

Une IRM ou un scanner peut être utilisé pour détecter des tumeurs surrénaliennes.

Les tests génétiques sont-ils utiles ?

Oui, ils peuvent aider à identifier des syndromes héréditaires liés aux catécholamines.

Quels sont les symptômes d'un excès de catécholamines ?

Les symptômes incluent hypertension, anxiété, palpitations et sueurs excessives.

Comment les catécholamines affectent-elles le cœur ?

Elles peuvent provoquer des palpitations et une augmentation de la fréquence cardiaque.

Peut-on ressentir des maux de tête ?

Oui, des maux de tête peuvent survenir en raison de l'hypertension causée par les catécholamines.

Les troubles de l'humeur sont-ils liés ?

Oui, l'anxiété et l'irritabilité peuvent être exacerbées par un excès de catécholamines.

Y a-t-il des symptômes digestifs associés ?

Des nausées et des troubles gastro-intestinaux peuvent également se manifester.

Peut-on prévenir les troubles liés aux catécholamines ?

Une gestion du stress et un mode de vie sain peuvent réduire les risques.

Quels changements de mode de vie sont recommandés ?

Adopter une alimentation équilibrée, faire de l'exercice et éviter le tabac sont conseillés.

Le stress peut-il être évité ?

Il est difficile d'éliminer le stress, mais des techniques de relaxation peuvent aider.

Les examens réguliers sont-ils importants ?

Oui, des bilans de santé réguliers peuvent aider à détecter des problèmes précocement.

L'éducation sur les symptômes est-elle utile ?

Oui, connaître les symptômes permet une détection et une intervention précoces.

Comment traiter un excès de catécholamines ?

Le traitement peut inclure des médicaments antihypertenseurs et une chirurgie si nécessaire.

Quels médicaments sont utilisés ?

Les bêta-bloquants et les inhibiteurs de la monoamine oxydase sont souvent prescrits.

La chirurgie est-elle toujours nécessaire ?

Non, elle est réservée aux cas de tumeurs surrénaliennes ou de phéochromocytomes.

Y a-t-il des traitements alternatifs ?

Des approches comme la méditation peuvent aider à gérer le stress et les symptômes.

Comment surveiller l'efficacité du traitement ?

Des suivis réguliers des niveaux de catécholamines et de la pression artérielle sont essentiels.

Quelles complications peuvent survenir ?

Des complications comme l'hypertension sévère et les maladies cardiaques peuvent se développer.

Les catécholamines peuvent-elles causer des AVC ?

Oui, une hypertension prolongée due aux catécholamines augmente le risque d'AVC.

Y a-t-il un risque de diabète ?

Un excès de catécholamines peut affecter la régulation de la glycémie, augmentant le risque de diabète.

Les troubles psychologiques sont-ils possibles ?

Oui, l'anxiété et la dépression peuvent être exacerbées par un déséquilibre des catécholamines.

Comment prévenir les complications ?

Un suivi médical régulier et un traitement approprié sont essentiels pour prévenir les complications.

Quels sont les principaux facteurs de risque ?

Les antécédents familiaux, le stress chronique et certaines tumeurs surrénaliennes sont des facteurs de risque.

Le mode de vie influence-t-il les risques ?

Oui, un mode de vie sédentaire et une mauvaise alimentation augmentent les risques.

Le tabagisme est-il un facteur de risque ?

Oui, le tabagisme peut exacerber les effets des catécholamines sur le système cardiovasculaire.

Le stress émotionnel joue-t-il un rôle ?

Oui, le stress émotionnel chronique peut augmenter la production de catécholamines.

Les maladies endocriniennes sont-elles un risque ?

Certaines maladies endocriniennes peuvent influencer la production de catécholamines.

Catécholamines - Informations médicales vérifiées

Tilt testing.

23 Nov 2023

DOI: 10.1136/pn-2023-003749 PMID: 37726165

Tilt testing can help to diagnose unexplained syncope, by precipitating an episode during cardiac monitoring. The Italian protocol, now most widely used, involves giving sublingual nitroglycerine afte...

Humans Hypotension, Orthostatic Tilt-Table Test Syncope Syncope, Vasovagal +2 autres

Syncope without prodromes is associated with excessive plasma release of adenosine at the time of syncope during head-up tilt table test.

15 09 2022

DOI: 10.1016/j.ijcard.2022.06.045 PMID: 35716941

In syncopal patients without underlying structural disease, we sought to investigate the association of Adenosine Plasma Levels (ADP) with the clinical presentation of neurally mediated syncope (NMS) ... We studied 124 patients with different clinical types of NMS, i.e., Vasovagal (VVS, n=58), non-prodromes (NPS, n=18), or situational syncope (SS, n=48), using a standard protocol including HUTT and AD... Baseline ADP did not differ among groups. ADP at syncope were higher in NPS (n=5) compared to VVS (n=20): 0.23 vs. 0.12 μΜ, p=0.03, and SS (n=22): 0.04 μΜ, p=0.02. In NPS, ADP increased from supine to... The subset of NPS patients with positive HUTT, show excessive ADP release at the time of syncope. This may explain the lack of prodromes in this form of syncope. Such observations contribute to the un...

Adenosine Adenosine Diphosphate Humans Syncope Syncope, Vasovagal +1 autres

Dynamic ST-segment elevation during head-up tilt test.

05 2023

DOI: 10.1111/anec.13029 PMID: 36484708

Dynamic ST-segment elevation during head-up tilt testing with normal coronary angiography....

Humans Electrocardiography Coronary Angiography Tilt-Table Test Arrhythmias, Cardiac

The clinical presentation of syncope influences the head-up tilt test responses.

04 2023

DOI: 10.1016/j.ejim.2023.01.001 PMID: 36639324

Little is still known about the positivity rate of nitroglycerin (NTG) potentiated head-up tilt test (HUTT) according to the history-based clinical features of syncope. The study aimed to compare the ... We retrospectively evaluated all consecutive patients who underwent NTG-potentiated HUTT for VVS. The study population was dichotomized into classical and non-classical VVS.... A total of 1285 VVS patients (45± 19.1 years; 49.6% male) were enrolled: 627 (48.8%) had a history of classical VVS and 658 (51.2%) of non-classical VVS. HUTT was positive in 866 (67.4%) patients. The... The clinical presentation of syncope influences the overall HUTT positivity rate and the type of responses. Cardioinhibitory response and traumatic syncope are more likely in patients with non-classic...

Humans Male Female Retrospective Studies Syncope +3 autres

Tilt table testing, methodology and practical insights for the clinic.

15 Oct 2023

DOI: 10.1111/cpf.12859 PMID: 37839043

Tilt table testing (TTT) has been used for decades to study short-term blood pressure (BP) and heart rate regulation during orthostatic challenges. TTT provokes vasovagal reflex in many syncope patien...

The Cardiac Autonomic Response Recovery to the Modified Tilt Test in Children Post Moderate-Severe Traumatic Brain Injury.

03 07 2022

DOI: 10.1080/02699052.2022.2110942 PMID: 35971307

To assess the recovery of the cardiac autonomic control system (CACS) response to the modified tilt-test during rehabilitation, in children post moderate-severe TBI at the subacute phase post-injury.... Thirty-seven children aged 6-18 years, 14-162 days post moderate-severe TBI, participated in the study. The assessment included CACS values evaluation (heart rate (HR), heart rate variability (HRV) an... In both assessments, only four children reported symptoms associated with orthostatic intolerance during the modified tilt-test. No change was found over time in the HR and HRV values at rest. In resp... Children post moderate-severe TBI at the sub-acute phase post-injury, have a better systolic blood pressure response during the modified tilt-test after eight weeks of individually tailored rehabilita... NCT03215082....

Adolescent Autonomic Nervous System Blood Pressure Brain Injuries, Traumatic Child +3 autres

A higher peak heart rate during head-up tilt test predicts the therapeutic efficacy of metoprolol in vasovagal syncope.

18 Oct 2024

DOI: 10.1186/s12872-024-04249-4 PMID: 39425043

Although beta blockers, such as metoprolol, have been widely used in the management of vasovagal syncope (VVS), their efficacy remains debated, with larger studies showing limited benefit. Identifying... This retrospective study was conducted at a single center. Patients diagnosed with VVS and treated with metoprolol for a minimum of three months were included. A 50% reduction in syncope symptom score... A total of 168 VVS patients were enrolled between January 2016 and December 2020. Of these, 100 patients responded positively to metoprolol, while 68 did not. No significant differences in baseline ch... Higher peak HR, larger increases in HR, and greater HR variability during the HUTT may serve as reliable predictors of a positive response to metoprolol in patients with VVS....

Humans Metoprolol Syncope, Vasovagal Female Male +11 autres

Clinical and Autonomic Profile, and Modified Calgary Score for Children and Adolescents with Presumed Vasovagal Syncope Submitted to the Tilt Test.

2023

DOI: 10.36660/abc.20220543 PMID: 37556654

In the pediatric population, syncope is mainly from vasovagal (VVS) origin. Its evaluation must be done by clinical methods, and the tilt test (TT) can contribute to the diagnosis.... To analyze the clinical profile, Calgary and modified Calgary scores, response to TT and heart rate variability (HRV) of patients aged ≤ 18 years with presumed VVS. To compare the variables between pa... Observational and prospective study, with 73 patients aged between 6 and 18 years, submitted to clinical evaluation and calculation of scores without previous knowledge of the TT. It was done at 70º u... Median age was 14.0 years; 52% of participants were female, 72 had Calgary ≥ -2 (mean 1.80), and 69 had modified Calgary ≥ -3 (mean 1.38). Prodromes were observed in 59 patients, recurrence in 50 and ... Most children and adolescents with a presumed diagnosis of VVS presented a typical clinical scenario, with a Calgary score ≥ -2, and a predominant vasodepressor response to TT. Greater sympathetic act...

Adolescent Child Female Humans Male +6 autres

The effects of ALDH2 Glu487Lys polymorphism on vasovagal syncope patients undergoing head-up tilt test supplemented with sublingual nitroglycerin.

28 10 2022

DOI: 10.1186/s12872-022-02901-5 PMID: 36307771

Head-up tilt test (HUTT) is clinically advantageous for diagnosing patients with vasovagal syncope (VVS). Nitroglycerin is mainly used as a stimulant during HUTT, and mitochondrial aldehyde dehydrogen... A total of 199 VVS patients were enrolled, including 101 patients in the ALDH2*1/*1 group and 98 patients in the ALDH2*2 group. Among patients undergoing HUTT-NTG, 70.3% of patients in the ALDH2*1/*1 ... ALDH2 Glu487Lys polymorphism did not affect the outcome of VVS patients undergoing HUTT-NTG, and no significant change in the hemodynamic characteristics of different genotypes was found....

Humans Syncope, Vasovagal Nitroglycerin Tilt-Table Test Syncope +2 autres

Effect of the early diastolic blood pressure response to the head-up tilt test on the recurrence of benign paroxysmal positional vertigo.

2024

DOI: 10.1371/journal.pone.0301800 PMID: 38696405

Otolith organ acts complementarily with the autonomic nervous system to maintain blood pressure. However, the effect of blood pressure variability in the autonomic nervous system on otolith organ has ... This study included 432 patients diagnosed with idiopathic BPPV. The follow-up period for all patients was 12 months. Age, sex, hypertension, diabetes and recurrence were analyzed. The HUTT parameters... In summary, the group with increased average diastolic blood pressure (DBP1) showed a higher tendency for BPPV recurrence compared to the group with decreased diastolic blood pressure (DBP2) in the up... It is presumed that poor autonomic nervous system response through vestibulosympathetic reflex maintains elevated diastolic blood pressure in the upright position during the HUTT. This variability is ...

Humans Male Female Benign Paroxysmal Positional Vertigo Middle Aged +9 autres

Catécholamines : Questions médicales fréquentes

Termes MeSH sélectionnés :

Questions fréquentes et termes MeSH associés

Diagnostic 5

Symptômes 5

Prévention 5

Traitements 5

Complications 5

Facteurs de risque 5

Contenu validé par Dr Olivier Menir

Sous-catégories

Carbidopa

Oxidopamine

Dobutamine

Dopamine

Épinéphrine

Isoprénaline

Orciprénaline

Norépinéphrine

Hydroxydopamines

Désoxyadrénaline

Métanéphrine

Racépinéfrine

Fénotérol

alpha-Méthyl-noradrénaline

Auteurs principaux

Sources (10000 au total)