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Neonatal hypotension

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https://www.readbyqxmd.com/read/27898415/hypotension-and-adverse-outcomes-in-prematurity-comparing-definitions
#1
Deidre St Peter, Christiana Gandy, Suma B Hoffman
BACKGROUND: In the premature neonate, there is no consensus regarding normal blood pressure (BP). The most common definition used is a mean arterial BP (MAP) less than the gestational age (GA); however, studies indicate that the neuroprotective mechanism of autoregulation is lost below a MAP of 30 mm Hg. OBJECTIVE: To determine whether hypotension defined as MAP <30 mm Hg or MAP less than the infant's GA better predicts adverse outcomes of intraventricular hemorrhage (IVH) and death...
November 30, 2016: Neonatology
https://www.readbyqxmd.com/read/27896911/the-timing-and-prevalence-of-intraoperative-hypotension-in-infants-undergoing-laparoscopic-pyloromyotomy-at-a-tertiary-pediatric-hospital
#2
Allan F Simpao, Luis M Ahumada, Jorge A Gálvez, Christopher P Bonafide, Elicia C Wartman, William Randall England, Arul M Lingappan, Todd J Kilbaugh, Abbas F Jawad, Mohamed A Rehman
BACKGROUND: Intraoperative hypotension may be associated with adverse outcomes in children undergoing surgery. Infants and neonates under 6 months of age have less autoregulatory cerebral reserve than older infants, yet little information exists regarding when and how often intraoperative hypotension occurs in infants. AIMS: To better understand the epidemiology of intraoperative hypotension in infants, we aimed to determine the prevalence of intraoperative hypotension in a generally uniform population of infants undergoing laparoscopic pyloromyotomy...
November 29, 2016: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/27857456/magnetic-resonance-imaging-spectrum-of-perinatal-hypoxic-ischemic-brain-injury
#3
Binoj Varghese, Rose Xavier, V C Manoj, M K Aneesh, P S Priya, Ashok Kumar, V K Sreenivasan
Perinatal hypoxic-ischemic brain injury results in neonatal hypoxic-ischemic encephalopathy and serious long-term neurodevelopmental sequelae. Magnetic resonance imaging (MRI) of the brain is an ideal and safe imaging modality for suspected hypoxic-ischemic injury. The pattern of injury depends on brain maturity at the time of insult, severity of hypotension, and duration of insult. Time of imaging after the insult influences the imaging findings. Mild to moderate hypoperfusion results in germinal matrix hemorrhages and periventricular leukomalacia in preterm neonates and parasagittal watershed territory infarcts in full-term neonates...
July 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/27847698/intrathecal-midazolam-as-an-adjuvant-in-pregnancy-induced-hypertensive-patients-undergoing-an-elective-caesarean-section-a-clinical-comparative-study
#4
Ravichandra Dodawad, Sumalatha G B, Sandeep Pandarpurkar, Parashuram Jajee
BACKGROUND: A pain-free postoperative period is essential following a caesarean section so new mothers may care for and bond with their neonates. Intrathecal adjuvants are often administered during this procedure to provide significant analgesia, but they may also have bothersome side effects. Intrathecal midazolam produces effective postoperative analgesia with no significant side effects. OBJECTIVES: This prospective, randomized, double-blind study was designed to compare the analgesic efficacy and safety of intrathecal midazolam vs...
October 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27826711/safety-of-enalapril-in-infants-admitted-to-the-neonatal-intensive-care-unit
#5
Lawrence C Ku, Kanecia Zimmerman, Daniel K Benjamin, Reese H Clark, Christoph P Hornik, P Brian Smith
Enalapril is used to treat hypertension and congestive heart failure in infants. However, enalapril is not labeled for neonates, and safety data in infants are sparse. To evaluate the safety of enalapril in young infants, we conducted a retrospective cohort study of infants who were exposed to enalapril in the first 120 days of life and were cared for in 348 neonatal intensive care units from 1997 to 2012. We determined the proportion of exposed infants who developed adverse events, including death, hypotension requiring pressors, hyperkalemia, and elevated serum creatinine...
November 8, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27789620/scalp-congenital-hemangioma-with-associated-high-output-cardiac-failure-in-a-premature-infant-case-report-and-review-of-literature
#6
Sumedh S Shah, Brian M Snelling, Samir Sur, Alexandra R Ramnath, Emmalee S Bandstra, Dileep R Yavagal
INTRODUCTION: Scalp congenital hemangiomas (CHs) are rare vascular malformations among infants; they can be associated with an array of complications, including cardiac and cosmetic issues. Here, we report the endovascular treatment of a premature infant with a suspected large right parietal scalp hemangioma and associated high-output cardiac failure. CASE DESCRIPTION: A two-day-old female premature infant (29 weeks gestational age; 1330 g birth weight) was referred by the neonatologists to our department for consultation and potential treatment of a large right parietal CH causing abrupt hypotension and high-output cardiac failure...
October 27, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27773638/diagnosis-and-risk-factors-of-acute-kidney-injury-in-very-low-birth-weight-infants
#7
Ankana Daga, Fredrick Dapaah-Siakwan, Sharina Rajbhandari, Cassandra Arevalo, Agnes Salvador
BACKGROUND: Acute kidney injury (AKI) is common in critically ill premature infants. There is a lack of consensus on the diagnostic definition of AKI in very low birth weight (VLBW) infants. The primary aim of this study was to determine the incidence and risk factors for AKI in VLBW infants using the AKI network (AKIN) and pRIFLE (pediatric Risk, Injury, Failure, Loss, End-Stage) criteria and to evaluate whether Clinical Risk Index for Babies (CRIB II) score is a predictor of AKI. The secondary objective was to determine the extent of agreement between the AKIN and pRIFLE criteria in the diagnosis of AKI in VLBW infants...
September 28, 2016: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/27750254/temporal-profile-of-circulating-micrornas-after-global-hypoxia-ischemia-in-newborn-piglets
#8
Håvard Tetlie Garberg, Marianne U Huun, Lars O Baumbusch, Monica Åsegg-Atneosen, Rønnaug Solberg, Ola Didrik Saugstad
BACKGROUND: There is a lack of reliable biomarkers that can identify and grade acute hypoxic-ischemic encephalopathy in newborns. MicroRNAs (miRNA) are short, non-coding strands of RNA that are released into the circulation in response to tissue stress and injury. Some miRNAs are highly tissue specific and thus may potentially be non-invasive biomarkers of neonatal hypoxic-ischemic brain injury. OBJECTIVE: The aim of this study was to characterize the temporal expression of selected circulating miRNAs in a clinically relevant piglet model of neonatal hypoxia-ischemia (HI)...
October 18, 2016: Neonatology
https://www.readbyqxmd.com/read/27747714/severe-hypotension-after-amlodipine-use-for-hypertension-in-a-newborn-on-beta-blocker-therapy-for-thyrotoxicosis
#9
Mohammad Khassawneh, Nedaa Al-Ghazo
A 35-year-old woman with a 9-year history of Grave's disease delivered a male infant weighing 2,210 g at 32 weeks of gestation by caesarean section. The neonate developed thyrotoxicosis and, at the age of 24 h, was treated with oral carbimazole (500 µg every 8 h) and propranolol (2 mg/kg/day in two divided doses). He subsequently developed hypertension on day 4, which required therapy with amlodipine (0.1 mg once daily). Severe hypotension developed within 24 h and required discontinuation of amlodipine, with initiation of intravenous inotropic support with dopamine and dobutamine (at a rate of 20 µg/kg/min)...
December 2015: Drug Safety—Case Reports
https://www.readbyqxmd.com/read/27746565/evaluation-of-antihypotensive-techniques-for-cesarean-section-under-spinal-anesthesia-rapid-crystalloid-hydration-versus-intravenous-ephedrine
#10
Kalpana Rajendra Kulkarni, Amruta Girish Naik, Sunetra Girish Deshpande
BACKGROUND: Spinal anesthesia is a preferred technique over general anesthesia for cesarean delivery. It avoids maternal airway related complications, aspiration and neonatal depression. However hypotension following spinal anesthesia can lead to decrease in uterine blood flow and neonatal hypoxia. AIMS: We aimed to evaluate the efficacy of 15 mL.kg- 1of crystalloid preloading versus prophylactic intravenous bolus of 10 mg ephedrine as an antihypotensive measure for cesarean section...
September 2016: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/27720613/an-open-label-randomized-controlled-clinical-trial-for-comparison-of-continuous-phenylephrine-versus-norepinephrine-infusion-in-prevention-of-spinal-hypotension-during-cesarean-delivery
#11
M C Vallejo, A F Attaallah, O M Elzamzamy, D T Cifarelli, A L Phelps, G R Hobbs, R E Shapiro, P Ranganathan
BACKGROUND: During spinal anesthesia for cesarean delivery phenylephrine is the vasopressor of choice but can cause bradycardia. Norepinephrine has both β- and α-adrenergic activity suitable for maintaining blood pressure with less bradycardia. We hypothesized that norepinephrine would be superior to phenylephrine, requiring fewer rescue bolus interventions to maintain blood pressure. METHODS: Eighty-five parturients having spinal anesthesia for elective cesarean delivery were randomized to Group P (phenylephrine 0...
August 28, 2016: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/27712890/acute-gastrointestinal-compromise-in-neonates-with-congenital-diaphragmatic-hernia-prior-to-repair
#12
Catherine Fox, Michael Stewart, Sebastian K King, Neil Patel
BACKGROUND: Congenital diaphragmatic hernia (CDH) affects 1 in 3000 live births. Modern management strategies include delayed repair of the diaphragm to permit pre-operative optimization of cardiorespiratory status. We describe a cohort of neonates in whom early emergency operative intervention was required for potentially fatal intestinal compromise. METHODS: A retrospective review was performed of all neonatal CDH patients managed at a tertiary center in an 8-year period (2005-2012)...
September 15, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27694473/simvastatin-prevents-and-reverses-chronic-pulmonary-hypertension-in-newborn-rats-via-pleiotropic-inhibition-of-rhoa-signaling
#13
Mathew J Wong, Crystal Kantores, Julijana Ivanovska, Amish Jain, Robert P Jankov
Chronic neonatal pulmonary hypertension (PHT) frequently results in early death. Systemically administered Rho-kinase (ROCK) inhibitors prevent and reverse chronic PHT in neonatal rats, but at the cost of severe adverse effects, including systemic hypotension and growth restriction. Simvastatin has pleiotropic inhibitory effects on isoprenoid intermediates that may limit activity of RhoA, which signals upstream of ROCK. We therefore hypothesized that statin treatment would safely limit pulmonary vascular RhoA activity and prevent and reverse experimental chronic neonatal PHT via downstream inhibitory effects on pathological ROCK activity...
September 30, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27687377/a-randomized-trial-comparing-prophylactic-phenylephrine-and-ephedrine-infusion-during-spinal-anesthesia-for-emergency-cesarean-delivery-in-cases-of-acute-fetal-compromise
#14
Kajal Jain, Jeetinder Kaur Makkar, Siva Subramani Vp, Shalini Gander, Praveen Kumar
BACKGROUND: Previous evidence showed that use of phenylephrine was associated with higher umbilical artery pH (UA pH) than ephedrine after elective cesarean delivery (CD). However, the best choice of vasopressor and its effect on funic gases in cases of acute fetal compromise require additional studies. METHODS: Ninety parturients showing acute fetal compromise during intrapartum period and taken up for CD (category II) under spinal anesthesia were randomized to receive prophylactic infusion of ephedrine 2...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27682213/the-management-of-neonatal-acute-and-chronic-renal-failure-a-review
#15
Malcolm G Coulthard
Most babies with chronic renal failure are identified antenatally, and over half that are treated with peritoneal dialysis receive kidney transplants before school age. Most infants that develop acute renal failure have hypotension following cardiac surgery, or multiple organ failure. Sometimes the falls in glomerular filtration and urine output are physiological and reversible, and sometimes due to kidney injury, but (illogically) it is now common to define them all as having 'acute kidney injury'. Contrary to widespread opinion, careful interpretation of the plasma creatinine concentrations can provide sensitive evidence of early acute renal failure...
September 25, 2016: Early Human Development
https://www.readbyqxmd.com/read/27619328/left-main-coronary-artery-atresia-in-an-infant-with-inclusion-cell-disease
#16
Rachel L Bounds, Joseph Kuebler, Jill M Cholette, George M Alfieris, Sitaram M Emani, Carol A Wittlieb-Weber
A 2-month-old male with dysmorphic facies, neonatal thrombocytopenia, left congenital cataract, and long bone abnormalities became hypotensive with ST depression on induction of anesthesia for congenital cataract repair. Echocardiogram demonstrated decreased left ventricular function (ejection fraction 46%), mild mitral valve regurgitation (MR), and regional wall motion abnormalities. The left coronary artery could not be visualized. Subsequent cardiac catheterization confirmed atresia of the left main coronary artery...
September 12, 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27614328/blood-pressure-and-aeeg-in-the-96h-after-birth-and-correlations-with-neurodevelopmental-outcome-in-extremely-preterm-infants
#17
Jun Shibasaki, Katsuaki Toyoshima, Makoto Kishigami
BACKGROUND: The management of hypotension immediately after the birth of preterm infants is controversial. AIM: To investigate the relationship between blood pressure (BP), amplitude-integrated electroencephalography (aEEG), and neurodevelopmental outcome in extremely preterm infants. METHODS: BP and aEEG were monitored for 96h after birth in 36 infants born at <27weeks gestation. aEEG data were analyzed with Burdjalov scores. Correlations of aEEG findings with BP and several clinical characteristics, including the Score for Neonatal Acute Physiology, Perinatal Extension-II (SNAPPE-II) were explored...
October 2016: Early Human Development
https://www.readbyqxmd.com/read/27597733/propofol-dose-finding-to-reach-optimal-effect-for-semi-elective-intubation-in-neonates
#18
Anne Smits, Liesbeth Thewissen, Alexander Caicedo, Gunnar Naulaers, Karel Allegaert
OBJECTIVE: To define the effective dose for 50% of patients (ED50) of propofol for successful intubation and to determine the rate of successful extubation in those patients with planned intubation, surfactant administration, and immediate extubation (INSURE procedure). In addition, pharmacodynamic effects were assessed. STUDY DESIGN: Neonates (n = 50) treated with propofol for (semi-)elective endotracheal intubation were stratified in 8 strata by postmenstrual and postnatal age...
September 2, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27589551/an-international-survey-on-persistent-pulmonary-hypertension-of-the-newborn-a-need-for-an-evidence-based-management
#19
N Nakwan, P Chaiwiriyawong
OBJECTIVE: To assess the current practice preferences in diagnosis and management of persistent hypertension of the newborn (PPHN) of neonatologists or pediatricians with expertise in neonatal care. STUDY DESIGN: Investigators identified potential participants worldwide through a literature search. They were emailed the URL of an online 25-item questionnaire through the web survey site SurveyMonkey®. Additional respondents were also acquired through a professional online discussion group...
September 16, 2016: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/27578461/cortisol-intermediates-and-hydrocortisone-responsiveness-in-critical-neonatal-disease
#20
Abdelmoneim Khashana, Timo Saarela, Mika Ramet, Mikko Hallman
OBJECTIVE: Therapy-resistant hypotension complicates diseases in neonates. Our objective was to investigate whether lack of therapeutic response to plasma expanders and inotropes associates with serum levels of cortisol and its precursors. METHODS: We investigated 96 infants with hypotension and critical neonatal disease for cortisol metabolism and are divided into responders and non-responders to plasma expanders and inotropes. Serum concentrations of steroids were analysed soon after the onset of volume expansion and inotrope treatment for shock...
August 31, 2016: Journal of Maternal-fetal & Neonatal Medicine
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