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Carotid sinus syndrome: a case report of an unusual presentation of cardiac arrest while diving.

ABSTRACT: Background:Carotid sinus syndrome (CSS) is an exaggerated response to carotid sinus baroreceptor stimulation, which may result in hypotension, prolonged asystole, and subsequently transient loss of consciousness due to cerebral hypoperfusion. However, this commonly benign syndrome may have lethal consequences under certain circumstances such as scuba diving. Case summary:We report the case of a trained 73-year-old male diver, who survived an almost fatal diving accident without any neurological deficits due to cardiac arrest under water. After recovery and intensive diagnostics in the local hospital, the origin of cardiac arrest remained unclear. However, after referral to our tertiary care centre CSS could be diagnosed by provoking syncope and asystole with carotid sinus massage (CSM). Consequently, a leadless pacing system was implanted and his medical diving fitness could then be recertified. Discussion:In conclusion, CSS may be an underdiagnosed cause of loss of consciousness. Thus, screening for CSS by CSM should be included in medical exams in senior athletes and specifically in senior divers.

SUBMITTER: Hartig F

PROVIDER: S-EPMC6426114 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Carotid sinus syndrome: a case report of an unusual presentation of cardiac arrest while diving.

Hartig Frank F Köhler Andrea A Stühlinger Markus M

European heart journal. Case reports 20181126 4

<h4>Background</h4>Carotid sinus syndrome (CSS) is an exaggerated response to carotid sinus baroreceptor stimulation, which may result in hypotension, prolonged asystole, and subsequently transient loss of consciousness due to cerebral hypoperfusion. However, this commonly benign syndrome may have lethal consequences under certain circumstances such as scuba diving.<h4>Case summary</h4>We report the case of a trained 73-year-old male diver, who survived an almost fatal diving accident without an ...[more]

PMID: 31020204

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Project description:INTRODUCTION:Cyclopia (alobar holoprosencephaly) (OMIM% 236100) is a rare and lethal complex human malformation, resulting from incomplete cleavage of prosencephalon into right and left hemispheres occurring between the 18th and the 28th day of gestation. Holoprosencephaly occurs in 1/16,000 live births, and 1/250 during embryogenesis. Approximately 1.05 in 100,000 births are identified as infants with cyclopia, including stillbirths. Cyclopia typically presents with a median single eye or a partially divided eye in a single orbit, absent nose, and a proboscis above the eye. Extracranial malformations described in stillbirths with cyclopia include polydactyl, renal dysplasia, and an omphalocele. The etiology of this rare syndrome, which is incompatible with life, is still largely unknown. Most cases are sporadic. Heterogeneous risk factors have been implicated as possible causes. CASE PRESENTATION:A live full-term baby with birth weight of 2900 g, product of cesarean section because of severe fetal bradycardia, was born at Prince Hashem Military Hospital - Zarqa city/Jordan. This newborn was the first baby to a non-consanguineous family, and a healthy 18-year-old mother, with no history of drug ingestion or febrile illnesses during pregnancy. Antenatal history revealed severe hydrocephalus diagnosed early by intrauterine ultrasound but the pregnancy was not terminated because of the lack of medical legitimization in the country. On examination, the newborn was found to have a dysmorphic face, with a median single eye, absence of nose, micrognathia, and a proboscis above the eye, all of which made cyclopia the possible initial diagnosis. Multiple unusual abdominal defects were present that include a huge omphalocele containing whole liver and spleen, urinary bladder extrophy, and undefined abnormal external genitalia, which called for urgent confirmation. Brain MRI was done and revealed findings consistent with alobar holoprosencephaly (cyclopia). CONCLUSION:Presentation of cyclopia is not fully exposed and new cyclopian syndromes still can appear. The prenatal diagnosis of cyclopia can be made early by ultrasound, and the awareness of the spectrum of sonographic findings of cyclopia can improve the accuracy of prenatal diagnosis. The legitimization of pregnancy termination for indexed cases in many countries around the world should be revised.

Dataset Information

Carotid sinus syndrome: a case report of an unusual presentation of cardiac arrest while diving.

Publications

Carotid sinus syndrome: a case report of an unusual presentation of cardiac arrest while diving.

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