hynek Heřman

Dr. hynek Heřman


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 August 2022 in Česká gynekologie
Verified
Journal Article
Closed access
JHJiří Hanáček
Jiří Hanáček
HHhynek Heřman
hynek Heřman
ABAnna Brandejsová
Anna Brandejsová
MEMichal Eminger
Michal Eminger
PKPetr Křepelka
Petr Křepelka
KMKateřina Macková
Kateřina Macková
Introduction: With the increasing number of caesarean sections, the number of cesarean scar pregnancies (CSP) is also increasing. This is a relatively new entity of an ectopic pregnancy, which is risky mainly because of its possible association with placenta accreta spectrum. CSP is thought to represent about 6% of the total number of ectopic pregnancies in all women who have a history of at least one caesarean section. The estimated incidence of CSP is about 1/1,688 of all pregnancies and about 1/ 2,000 of all caesarean sections. Material and methods: Retrospective analysis of individual cases of cesarean scar pregnancies managed in our health care facility in the years 2012–2021. Results: In total, we managed 16 cases of pregnancy in the caesarean scar in 15 women. In one woman, we recorded CSP twice. The mean age of the women was 36.6 years (27–41). The mean number of caesarean sections was 1.6 (1–3) and gestational week was 7 (4–10). The average time since the caesarean section was 3.6 years (2–11). The management was methotrexate administration once, hysteroscopic resection once and 11times primarily vacuum aspiration only, when in two cases we had to attach laparoscopic uterine artery ligation due to postoperative bleeding. We performed primary ligature of uterine arteries twice before performing vacuum aspiration. In pregnancies above 10 weeks of gestation, we observed more bleeding complications requiring surgical management. Bleeding complications were also related to the presence of fetal cardiac action. Conclusion: Early correct diagnosis is essential in the management of CSP. Pregnancies up to the 10th week of gestation are managed by simple vacuum aspirations under ultrasound guidance. If the pregnancy is over the 10th week of gestation and especially with cardiac activity, we add laparoscopic uterine artery ligation before vacuum aspiration. All patients are subsequently advised to undergo laparoscopic resuturing of the lower uterine segment. Key words: cesarean scar pregnancy – ultrasound – vacuum aspiration – uterine artery ligation – methotrexate

27 June 2022 in Česká gynekologie
Verified
Journal Article
Closed access
JHJiří Hanáček
Jiří Hanáček
HHhynek Heřman
hynek Heřman
PKPetr Křepelka
Petr Křepelka
LHLubomír Hašlík
Lubomír Hašlík
ABAnna Brandejsová
Anna Brandejsová
LKLadislav Krofta
Ladislav Krofta
Objective: To summarize the current knowledge on pregnancy in a cesarean scar. Methodology: A literature review on the topic using the PubMed database. Results: Gravidity in a cesarean scar is a relatively new type of ectopic pregnancy that will be an increasingly common problem in an era of increasing cesarean section rates. It is still a relatively rare event, occurring in about 6% of the population. Diagnosis is based primarily on ultrasound examination and is essential early on in pregnancy. The pathogenesis of the disease is due to a disorder of the basal layer of the endometrium and can lead to conditions that we refer to as placenta accreta spectrum. The management is completely individualized and depends on hCG values, ultrasound findings, fetal viability, the wishes of the pregnant woman and the experience of the gynecologist concerned. Conclusion: This is still a rare occurrence of ectopic pregnancy but with increasing potential. The solution is completely individualized based on a precise and early ultrasound diagnosis. Key words: cesarean scar pregnancy – ultrasound diagnosis – placenta accreta spectrum – vacumaspiration – methotrexate – uterine scar resuture

31 August 2022 in Česká gynekologie
Verified
Journal Article
Closed access
HHhynek Heřman
hynek Heřman
AFAdéla Tefr Faridová
Adéla Tefr Faridová
MVMartina Volfova
Martina Volfova
EHEliška Hostinská
Eliška Hostinská
GDGabriela Džuponová
Gabriela Džuponová
RPRadovan Pilka
Radovan Pilka
Amniotic fluid embolism (AFE) is a rare and often fatal obstetric complication, characterized by sudden cardiovascular collapse, dyspnea, seizures, mental alteration or coma and laboratory and clinically diagnosed disseminated intravascular coagulation (DIC). Patient’s reaction is typically biphasic with initial pulmonary hypertension and right ventricular failure, followed by left ventricular failure during or immediately right after labor. Early recognition of AFE is critical to a successful survival. Aggressive shock management is needed in collaboration with an anesthesiologist. Several aspects of the condition remain a controversy. This review critically examines, from the best available evidence, the current knowledge regarding the epidemiology, pathophysiology, diagnosis, and available treatment of AFE. This diagnosis still determines perinatal morbidity and mortality and potential permanent neurological symptoms for surviving patients. Key words: amniotic fluid embolism – disseminated intravascular coagulation – meconium – Zinc-coproporphyrin

18 February 2023 in Brain Sciences
Verified
Journal Article
Open access
PDF file
JBJitka Buskova
Jitka Buskova
EMEva Miletinova
Eva Miletinova
RKRadana Králová
Radana Králová
TDTereza Dvořáková
Tereza Dvořáková
AFAdéla Tefr Faridová
Adéla Tefr Faridová
ASAntonin Sebela
Antonin Sebela
Objectives: Pregnancy is often associated with reduced sleep quality and an increase in sleep disorders, such as restless leg syndrome, obstructive sleep apnea, and insomnia. There are few studies investigating the prevalence of parasomnias in pregnancy, although they may be expected to be a significant problem, as disturbed sleep in this time period in addition to these sleep disorders may trigger parasomnia episodes. Methods: We conducted a survey using an online questionnaire focusing on a comparison of the prevalence of parasomnias in three time periods: 3 months before pregnancy, during pregnancy, and 3 months after delivery. We also inquired about psychiatric and neurological comorbidities, current anxiety and depression symptoms, and pregnancy complications. Results: A total of 325 women (mean age 30.3 ± 5.3 years) participated in the online survey. The overall number of reported parasomnias increased during pregnancy compared to the 3 months before pregnancy (p < 0.001) and decreased after childbirth (p < 0.001). Specifically, we found a significant increase in sleepwalking (p = 0.02) and night terrors (p < 0.001), as well as in vivid dreams (p < 0.001) and nightmares (p < 0.001) during pregnancy. A similar significant increase during pregnancy was reported for head explosion (p < 0.011). In contrast, the number of episodes of sleep paralysis increased after delivery (p = 0.008). At the individual level, an increase in the severity/frequency of individual parasomnia episodes was also observed during pregnancy. Participants whose vivid dreams/nightmares persisted after delivery had higher BDI-II and STAI-T scores. Our data also suggest a significant impact of migraines and other chronic pain, as well as complications during pregnancy, on the presence of parasomnia episodes in our cohort. Conclusions: We have shown that the prevalence of parasomnias increases during pregnancy and needs to be targeted, especially by non-pharmacological approaches. At the same time, it is necessary to inquire about psychiatric and neurological comorbidities and keep in mind that more sleep disorders may be experienced by mothers who have medical complications during pregnancy.

23 December 2022 in Česká gynekologie
Verified
Journal Article
Closed access
JHJiří Hanáček
Jiří Hanáček
JDJan Drahoňovský
Jan Drahoňovský
HHhynek Heřman
hynek Heřman
MEMichal Eminger
Michal Eminger
PKPetr Křepelka
Petr Křepelka
MDMarkéta Dibonová
Markéta Dibonová
In our review article, we focused on the rare topic of endometriosis in postmenopause. Endometriosis is primarily a disease of women of reproductive age. In postmenopause, atrophy of endometriosis foci usually occurs. However, recurrence or even de novo occurrence of endometriosis in postmenopause has also been described. The prevalence in postmenopause has been reported to be around 2–5%. Factors that may account for the recurrence of endometriosis are exogenously administered estrogens, self-production of estrogens in peripheral adipose tissue, or activation of aromatase in the focus of endometriosis. When hormonal therapy is required, the best results are achieved by administration of Tibolone. Risk factors for recurrence and subsequent difficulties are the extent of endometriosis, the retained uterus and adnexa. Pain was the most common symptom in 43.5% and palpable finding in 28%. Endometriotic cells are capable of proliferation, survival in an ectopic localization and metastasis to distant locations. The risk of malignant transformation is around 1% and the most common are ovarian tumors. Endometriosis-associated ovarian tumors are typically low-grade disease, histologically endometrioid or clear cell carcinomas. Diagnosis is based on ultrasound and magnetic resonance imaging. The basis of therapy for newly developed endometriosis or when symptoms associated with the risk of endometriosis appear is a surgical solution, primarily to exclude the cancerous process. Key words: endometriosis – postmenopause – malignancy – hormonal treatment

26 July 2025 in International Journal of Gynecology & Obstetrics
Verified
Journal Article
Open access
RFRuwan Fernando
Ruwan Fernando
EBEwa Barcz
Ewa Barcz
ASAntonino Spinelli
Antonino Spinelli
RTRenaud de Tayrac
Renaud de Tayrac
CRCarlo Ratto
Carlo Ratto
SSStefano Salvatore
Stefano Salvatore
Obstetric anal sphincter injuries (OASIs) constitute a significant complication in vaginal childbirth, affecting up to 26% of deliveries and representing the leading cause of anal incontinence among women. Despite their prevalence and serious long‐term consequences, OASIs remain widely underreported, partly because of clinicians' hesitancy linked to fear of litigation, peer criticism, and a pervasive culture that discourages disclosure of adverse events. Recent evidence emphasizes that underreporting exacerbates rather than mitigates legal risks and patient harm, underscoring the urgent need for systemic changes. This article reviews critical factors contributing to OASI underreporting, including inadequate clinical training, inconsistent national guidelines, variable litigation landscapes, and differing diagnostic practices across European healthcare systems. Examples from the UK, Poland, Sweden, Norway, France, Italy, the Czech Republic, and Belgium demonstrate significant variations in prevention strategies, diagnostic accuracy, and management protocols, reflecting uneven progress and highlighting opportunities for standardized care improvements. These national discrepancies in OASI definitions, classification, and reporting thresholds may lead to significant inconsistencies in both clinical outcomes and statistical comparisons across healthcare systems. Implementing structured training, standardized protocols, multidisciplinary collaboration, and transparent reporting systems are essential for improving maternal outcomes and reducing litigation risks. Encouraging an institutional culture of accountability and openness will support continuous improvement, ensuring enhanced patient safety and quality care across global healthcare systems.