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Aesthetic Plastic Surgery May 2024The main causes of ecchymosis and edema are osteotomy (bone manipulation), dissection of subcutaneous tissue, and skin manipulation in the rhinoplasty procedure. Eyelid...
The main causes of ecchymosis and edema are osteotomy (bone manipulation), dissection of subcutaneous tissue, and skin manipulation in the rhinoplasty procedure. Eyelid edema following surgery can potentially affect visual acuity, particularly during the initial twenty-four hours after the procedure. These may also delay the patient's return to their normal social life therefore hampering their quality of life. Various surgical and medical methods have been reported to address these issues. This study aimed to compare the effects of using cold saline (0-4 °C) versus room temperature saline (20-25 °C) irrigation throughout the surgery on postoperative edema, ecchymosis, and pain. Fifty patients who underwent open-approach primary rhinoplasty between August 2022 and August 2023 at a tertiary academic center were included. Fifty patients were randomly divided into two groups depending on using cold saline (0-4 °C) (group 1) or room temperature saline (20-25 °C) (group 2) during surgical site irrigation. Patients were assessed for pain, edema, and bruising using a VAS (Visual Analog Scale) on the second and seventh postoperative days. Visual analog score (VAS) was used for subjective outcome analyses. Each patient scored the severity of their periorbital ecchymosis on day two and seven. Periorbital ecchymosis was also evaluated on the second and seventh postoperative days using the SPREE (Surgeon Periorbital Rating of Edema and Ecchymosis) scale. On the second postoperative day, the VAS pain score in group 1, where cold water was used, was found to be statistically and significantly different from the control group (group 2) (p < 0.05). However, there was no statistically significant difference between both groups when comparing the VAS pain scores on the seventh postoperative day. Regarding the VAS ecchymosis score on the seventh postoperative day, there was a statistically significant difference favoring group 1 (p < 0.05). The SPREE scale data also indicated that group 1 had significantly lower scores on the seventh day (p < 0.05). While the SPREE scores on the second day were lower in group 1 than in group 2, this difference did not reach statistical significance (p = 0.061). The findings from our study show that cold saline irrigation may contribute to intraoperative hemostasis by inducing local vasoconstriction. We observed that intraoperative bleeding decreased with the use of cold saline. This approach has the potential to improve patient satisfaction and overall quality of life by reducing postoperative ecchymosis without significantly increasing the cost of the surgical procedure.Level of Evidence III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
PubMed: 38806826
DOI: 10.1007/s00266-024-04105-y -
Pulmonary Circulation Apr 2024Pulmonary hypertension in sickle cell disease (SCD) is a complex phenomenon resulting from multiple overlapping etiologies, including pulmonary vasoconstriction in the...
Pulmonary hypertension in sickle cell disease (SCD) is a complex phenomenon resulting from multiple overlapping etiologies, including pulmonary vasoconstriction in the setting of chronic hemolytic anemia, diastolic dysfunction, and chronic thromboembolic disease. The presence of pulmonary hypertension of any cause in SCD confers a significant increase in mortality risk. Evidence to guide the management of patients with sickle cell disease and chronic thromboembolic pulmonary hypertension (CTEPH) is scant and largely the realm of case reports and small case series. Centered on a discussion of a complex young patient with hemoglobin hemoglobin SC who ultimately underwent treatment with pulmonary thromboendarterectomy, we review the available literature to guide management and discuss and overview of treatment of CTEPH in SCD, considering the unique considerations and challenges facing patients suffering from this multisystem disease.
PubMed: 38803827
DOI: 10.1002/pul2.12362 -
Headache May 2024To report the cardiovascular (CV) safety of dihydroergotamine mesylate (DHE) administered by precision olfactory delivery (INP104) from two clinical trials.
OBJECTIVE
To report the cardiovascular (CV) safety of dihydroergotamine mesylate (DHE) administered by precision olfactory delivery (INP104) from two clinical trials.
BACKGROUND
Although the absolute risk is low, migraine is associated with an increased risk of CV events. DHE is a highly effective acute treatment for migraine, but due to its theoretical risk of promoting arterial vasoconstriction, DHE is contraindicated in patients with CV disease or an unfavorable risk factor profile. The INP104 is a novel drug-device combination product approved for acute treatment of migraine that delivers DHE to the upper nasal space using precision olfactory delivery (POD®).
METHODS
The STOP 101 was a Phase 1 open-label study that assessed the safety, tolerability, and bioavailability of INP104 1.45 mg, intravenous DHE 1.0 mg, and MIGRANAL (nasal DHE) 2.0 mg in healthy participants. The STOP 301 was a pivotal Phase 3, open-label study that assessed the safety, tolerability, and exploratory efficacy of INP104 1.45 mg over 24 and 52 weeks in patients with migraine. In both studies, active or a history of CV disease, as well as significant CV risk factors, were exclusion criteria.
RESULTS
In STOP 101, 36 participants received one or more doses of investigational product. Treatment with intravenous DHE, but not INP104 or nasal DHE, resulted in clinically relevant changes from baseline in systolic blood pressure (BP; 11.4 mmHg, 95% confidence interval [CI] 7.9-15.0) and diastolic BP (13.3 mmHg, 95% CI 9.4-17.1) at 5 min post-dose, persisting up to 30 min post-dose for systolic BP (6.3 mmHg; 95% CI 3.0-9.5) and diastolic BP (7.9 mmHg, 95% CI 3.9-11.9). None of the treatments produced any clinically meaningful electrocardiogram (ECG) changes. In STOP 301, 354 patients received one or more doses of INP104. Over 24 weeks, five patients (1.4%) experienced a non-serious, vascular treatment-emergent adverse event (TEAE). Minimal changes were observed for BP and ECG parameters over 24 or 52 weeks. Off-protocol concomitant use of triptans and other ergot derivatives did not result in any TEAEs.
CONCLUSION
In two separate studies, INP104 demonstrated a favorable CV safety profile when used in a study population without CV-related contraindications.
PubMed: 38800847
DOI: 10.1111/head.14669 -
NeuroImage May 2024Perivascular cerebrospinal fluid (pCSF) flow is a key component of the glymphatic system. Arterial pulsation has been proposed as the main driving force of pCSF influx...
Perivascular cerebrospinal fluid (pCSF) flow is a key component of the glymphatic system. Arterial pulsation has been proposed as the main driving force of pCSF influx along the superficial and penetrating arteries; however, evidence of this mechanism in humans is limited. We proposed an experimental framework of dynamic diffusion tensor imaging with low b-values and ultra-long echo time (dynDTI) to capture pCSF flow properties during the cardiac cycle in human brains. Healthy adult volunteers (aged 17-28 years; seven men, one woman) underwent dynDTI using a clinical 3T scanner (MAGNETOM Prisma, Siemens Healthcare, Erlangen, Germany) with simultaneously recorded cardiac output. The results showed that diffusion tensors reconstructed from pCSF were mainly oriented in the direction of the neighboring arterial flow. When switching from vasoconstriction to vasodilation, the axial and radial diffusivities of the pCSF increased by 5.7% and 4.94%, respectively, suggesting that arterial pulsation alters the pCSF flow both parallel and perpendicular to the arterial wall. DynDTI signal intensity at b=0 s/mm (i.e., T2-weighted, [S(b=0 s/mm)]) decreased in systole, but this change was ∼7.5% of a cardiac cycle slower than the changes in apparent diffusivity, suggesting that changes in S(b=0 s/mm) and apparent diffusivity arise from distinct physiological processes and potential biomarkers associated with perivascular space volume and pCSF flow, respectively. Additionally, the mean diffusivities of white matter showed cardiac-cycle dependencies similar to pCSF, although a delay relative to the peak time of S(b=0 s/mm) was present, suggesting that dynDTI could potentially reveal the dynamics of magnetic resonance imaging-invisible pCSF surrounding small arteries and arterioles in white matter; this delay may result from pulse wave propagation along penetrating arteries. In conclusion, the vasodilation-induced increases in axial and radial diffusivities of pCSF and mean diffusivities of white matter are consistent with the notion that arterial pulsation can accelerate pCSF flow in human brain. Furthermore, the proposed dynDTI technique can capture various pCSF dynamics in artery pulsation.
PubMed: 38795798
DOI: 10.1016/j.neuroimage.2024.120653 -
The Journal of Emergency Medicine Jul 2024Vasopressor medications raise blood pressure through vasoconstriction and are essential in reversing the hypotension seen in many critically ill patients. Previously,... (Review)
Review
BACKGROUND
Vasopressor medications raise blood pressure through vasoconstriction and are essential in reversing the hypotension seen in many critically ill patients. Previously, vasopressor administration was largely limited to continuous infusions through central venous access.
OBJECTIVES OF THE REVIEW
This review addresses the clinical use of vasopressors in various shock states, including practical considerations and innovations in vasopressor administration. The focus is on the clinical administration of vasopressors across a range of shock states, including hypovolemic, distributive, cardiogenic, and obstructive shock.
DISCUSSION
Criteria for starting vasopressors are not clearly defined, though early use may be beneficial. A number of physiologic factors affect the body's response to vasopressors, such as acidosis and adrenal insufficiency. Peripheral and push-dose administration of vasopressors are becoming more common. Distributive shock is characterized by inappropriate vasodilation and vasopressors play a crucial role in maintaining adequate blood pressure. The use of vasopressors is more controversial in hypovolemic shock, as the preferred treatment is correction of the volume deficit. Evidence for vasopressors is limited in cardiogenic shock. For obstructive shock, vasopressors can temporize a patient's blood pressure until definitive therapy can reverse the underlying cause.
CONCLUSION
Across the categories of shock states, norepinephrine has wide applicability and is a reasonable first-line agent for shock of uncertain etiology. Keeping a broad differential when hypotension is refractory to vasopressors may help to identify adjunctive treatments in physiologic states that impair vasopressor effectiveness. Peripheral administration of vasopressors is safe and facilitates early administration, which may help to improve outcomes in some shock states.
Topics: Humans; Vasoconstrictor Agents; Shock; Emergency Medicine; Norepinephrine; Hypotension; Blood Pressure; Shock, Cardiogenic
PubMed: 38789351
DOI: 10.1016/j.jemermed.2024.03.004 -
Anesthesiology May 2024Impaired glymphatic clearance of cerebral metabolic products and fluids contribute to traumatic and ischemic brain oedema and neurodegeneration in preclinical models....
BACKGROUND
Impaired glymphatic clearance of cerebral metabolic products and fluids contribute to traumatic and ischemic brain oedema and neurodegeneration in preclinical models. Glymphatic perivascular cerebrospinal fluid (CSF) flow varies between anesthetics possibly due to changes in vasomotor tone and thereby in the dynamics of the periarterial CSF-containing space. To better understand the influence of anesthetics and carbon dioxide levels on CSF dynamics, we studied the effect of periarterial size modulation on CSF distribution by changing blood carbon dioxide levels and anesthetic regimens with opposing vasomotor influences - vasoconstrictive ketamine-dexmedetomidine (K/DEX) and vasodilatory isoflurane (ISO).
METHODS
End-tidal carbon dioxide (EtCO2) was modulated with either supplemental inhaled carbon dioxide to reach hypercapnia (EtCO2 80 mmHg) or hyperventilation (EtCO2 20 mmHg) in tracheostomized and anesthetized female rats. Distribution of intracisternally infused radiolabeled CSF tracer 111In-diethylamine pentaacetate was assessed for 86 minutes in 1) normoventilated (EtCO2 40 mmHg) K/DEX, 2) normoventilated ISO, 3) hypercapnic K/DEX, and 4) hyperventilated ISO groups using dynamic whole-body single-photon emission tomography. CSF volume changes were assessed with magnetic resonance imaging.
RESULTS
Under normoventilation, cortical CSF tracer perfusion, perivascular space size around middle cerebral arteries (MCAs), and intracranial CSF volume were higher under K/DEX compared with ISO (cortical Cmax ratio 2.33 [95% CI 1.35 to 4.04], perivascular size ratio 2.20 [95% CI 1.09 to 4.45], and intracranial CSF volume ratio 1.90 [95% CI 1.33 to 2.71]). Under ISO, tracer was directed to systemic circulation. Under K/DEX, the intracranial tracer distribution and CSF volume were uninfluenced by hypercapnia compared with normoventilation. Intracranial CSF tracer distribution was unaffected by hyperventilation under ISO despite a 28% increase in CSF volume around MCAs.
CONCLUSIONS
K/DEX and ISO overrode carbon dioxide as a regulator of CSF flow. K/DEX could be used to preserve CSF space and dynamics in hypercapnia whereas hyperventilation was insufficient to increase cerebral CSF perfusion under ISO.
PubMed: 38787687
DOI: 10.1097/ALN.0000000000005039 -
Biomolecules May 2024Pulmonary arterial hypertension (PAH) is a rare subtype of group 1 pulmonary hypertension (PH) diseases, characterized by high pulmonary artery pressure leading to right... (Review)
Review
Pulmonary arterial hypertension (PAH) is a rare subtype of group 1 pulmonary hypertension (PH) diseases, characterized by high pulmonary artery pressure leading to right ventricular dysfunction and potential life-threatening consequences. PAH involves complex mechanisms: vasoconstriction, vascular remodeling, endothelial dysfunction, inflammation, oxidative stress, fibrosis, RV remodeling, cellular hypoxia, metabolic imbalance, and thrombosis. These mechanisms are mediated by several pathways, involving molecules like nitric oxide and prostacyclin. PAH diagnosis requires clinical evaluation and right heart catheterization, confirming a value of mPAP ≥ 20 mmHg at rest and often elevated pulmonary vascular resistance (PVR). Even if an early and accurate diagnosis is crucial, PAH still lacks effective biomarkers to assist in its diagnosis and prognosis. Biomarkers could contribute to arousing clinical suspicion and serve for prognosis prediction, risk stratification, and dynamic monitoring in patients with PAH. The aim of the present review is to report the main novelties on new possible biomarkers for the diagnosis, prognosis, and treatment monitoring of PAH.
Topics: Humans; Biomarkers; Pulmonary Arterial Hypertension; Prognosis; Hypertension, Pulmonary; Oxidative Stress
PubMed: 38785959
DOI: 10.3390/biom14050552 -
American Journal of Hypertension May 2024Extracellular volume (ECV) overload and endothelial cell dysfunction (ECD) are independent risk factors for mortality in hemodialysis patients. Endothelin-1 (ET-1), an...
INTRODUCTION
Extracellular volume (ECV) overload and endothelial cell dysfunction (ECD) are independent risk factors for mortality in hemodialysis patients. Endothelin-1 (ET-1), an endothelium-derived vasoconstrictive peptide, is associated with poor outcomes in hemodialysis patients and heart failure patients without kidney disease. We hypothesized there would be associations between ET-1 and ECV overload assessed with bioimpedance spectroscopy (BIS) in hypertensive hemodialysis patients.
METHODS
We obtained pre-HD plasma ET-1, ECV/weight (using multi-frequency BIS), pre-HD hemodynamic measurements, and ambulatory blood pressure (BP) in a cohort of HD patients. Following appropriate transformations, we conducted correlation and linear regression analyses to identify associations between ET-1 and ECV overload. We further explored associations between ET-1 and total peripheral resistance index (TPRI), cardiac index (CI), and ambulatory BP.
RESULTS
Among 66 patients, median ET-1 was 1.93 (1.49-2.56) pg/mL. Median pre-HD ECV/weight, median TPRI, mean CI, and mean systolic ambulatory BP were 0.25 (0.22-0.30) L/kg, 3161 (2711-3642) dynes*sec/cm-5/m2, 2.92 (0.6) L/min/m2, and 143 (14) mmHg, respectively. After reciprocal transformation, ET-1 correlated with reciprocal-transformed ECV/weight (r=0.3, p=.01), log-transformed TPRI (r=-0.3, p=.006), CI (r=0.3, p=.009) and ambulatory BP (r=-0.3, p=.02). Controlling for demographic variables, these associations persisted in linear regression analysis (β=0.15, p=.002; β=-0.8, p=.002; β=0.2, p=.002; β=-19, p=.03).
CONCLUSIONS
In hypertensive HD patients, ECV overload is associated with ET-1. ET-1 is associated with higher TPRI and lower CI before dialysis and higher ambulatory BP. Further research is necessary to determine if ECV reduction lowers ET-1 or if pharmacologic ET-1 antagonism can improve outcomes in HD patients with refractory ECV overload.
PubMed: 38779972
DOI: 10.1093/ajh/hpae060 -
BMC Cardiovascular Disorders May 2024Surgery remains the primary treatment modality for thymic carcinoma, with adjuvant radiotherapy being recommended to effectively mitigate local recurrence and metastasis...
INTRODUCTION
Surgery remains the primary treatment modality for thymic carcinoma, with adjuvant radiotherapy being recommended to effectively mitigate local recurrence and metastasis rates subsequent to incomplete or complete resection. Chemoradiotherapy has the potential to induce coronary artery occlusion, thereby potentially impacting patients' long-term survival rates. The existing literature currently lacks comprehensive research on the lesion characteristics of coronary artery injury resulting from chemoradiotherapy.
CASE PRESENTATION
The male patient, aged 55, was admitted to the hospital due to recurrent chest tightness and pain persisting for one week. Notably, the patient had previously undergone curative resection surgery for thymic carcinoma seven years ago. After the surgical procedure, the patient underwent a course of adjuvant chemotherapy comprising docetaxel and platinum. 11 months later, imaging examination diagnosed tumor recurrence, and concurrent chemoradiotherapy was administered at a total dose of 62 Gy/31F for planning gross target volume (PGTV) and 54 Gy/31F for planning target volume (PTV) with 2 cycles of paclitaxel and cisplatin. Re-admission of the patient occurred after a 7-year interval subsequent to the completion of concurrent chemoradiotherapy, leading to a subsequent diagnosis of acute non-ST segment elevation myocardial infarction. Following administration of antiplatelet, anticoagulant, and anti-myocardial ischemia therapy, coronary angiography revealed the presence of a bifurcation lesion at the distal end of the left main trunk. Intravascular ultrasound (IVUS) examination demonstrated significant negative remodeling of both the main trunk and its branches at the bifurcation site, characterized by minimal atherosclerotic plaque components.
CONCLUSIONS
Chemoradiotherapy may induce damage to endothelial cells, resulting in an inflammatory response. Negative remodeling of blood vessels is likely to occur, primarily characterized by vasoconstriction but with less atherosclerotic plaque burden. Routine stent implantation in negatively remodeled areas may lead to vascular rupture, necessitating intravascular imaging examination.
Topics: Humans; Male; Thymus Neoplasms; Middle Aged; Treatment Outcome; Time Factors; Thymoma; Coronary Angiography; Vascular System Injuries; Coronary Vessels; Chemoradiotherapy
PubMed: 38778265
DOI: 10.1186/s12872-024-03948-2 -
Brazilian Journal of Medical and... 2024Arthritis has important cardiovascular repercussions. Phenylephrine-induced vasoconstriction is impaired in rat aortas in the early phase of the adjuvant-induced...
Arthritis has important cardiovascular repercussions. Phenylephrine-induced vasoconstriction is impaired in rat aortas in the early phase of the adjuvant-induced arthritis (AIA), around the 15th day post-induction. Therefore, the present study aimed to verify the effects of AIA on hyporesponsiveness to phenylephrine in rat aortas. AIA was induced by intradermal injection of Mycobacterium tuberculosis (3.8 mg/dL) in the right hind paw of male Wistar rats (n=27). Functional experiments in isolated aortas were carried out 15 days after AIA induction. Morphometric and stereological analyses of the aortas were also performed 36 days after the induction of AIA. AIA did not promote structural modifications in the aortas at any of the time points studied. AIA reduced phenylephrine-induced contraction in endothelium-intact aortas, but not in endothelium-denuded aortas. However, AIA did not change KCl-induced contraction in either endothelium-intact or denuded aortas. L-NAME (non-selective NOS inhibitor), 1400W (selective iNOS inhibitor), and ODQ (guanylyl cyclase inhibitor) reversed AIA-induced hyporesponsiveness to phenylephrine in intact aortas. 7-NI (selective nNOS inhibitor) increased the contraction induced by phenylephrine in aortas from AIA rats. In summary, the hyporesponsiveness to phenylephrine induced by AIA was endothelium-dependent and mediated by iNOS-derived NO through activation of the NO-guanylyl cyclase pathway.
Topics: Animals; Male; Phenylephrine; Rats, Wistar; Arthritis, Experimental; Nitric Oxide; Vasoconstriction; Endothelium, Vascular; Vasoconstrictor Agents; Rats; Aorta
PubMed: 38775546
DOI: 10.1590/1414-431X2024e13304