14163183
Description
Flashcards by Elizabeth Then, updated more than 1 year ago
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Created by Elizabeth Then
almost 6 years ago
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| Question | Answer |
| Obstetric complications | Assessment skills are vital for identifying probelms: Involves all senses observation, palpatation, percussion, auscultation thorough history taking of women and her family |
| Maternal mortality | death of a pregnant woman or within 42 days of delivery termination |
| What to do | access to quality care skilled professional workforce good hygiene access to safe abortion prevent unwanted pregnancies access to contraception oxytocin after birth detection/management of pre-existing conditions address inequalities in access and quality |
| Australia and SA incidences | Aus 1.1/100,000 births in 2015 SA - 8.9/100,000 births 3 maternal deaths in 2015 |
| Abortion in South Australia | medical termination of pregnancy became legal in SA in 1970 SA was the first legal state to enable this |
| Abortion in South Australia\ stats in 2014 | notifications: 4439 notified, women 20-24 and 25-29 had highest rates, teens reducing over 10 years by 11.9% reasons: mental health 95.6%, serious abnormality 3.8%, maternal condition 0.6% complications: 115 reported cases, 89 retained conception prodcuts, 12 sepsis, 8 haemorrhage, 5 failed procedure, 1 perforation uterus |
| Maternal complications in SA | remember 56.1% of pregnancies have no complications most arise from diabetes - 10.4% HTN - 7.0% Haemorrhage - 4.4% other 22.10% combined |
| Gestational diabetes definition: | carb intolerance of variable severity with onset or first recognition during pregnancy at risk of maternal and foetal mortality/morbidity large babies, difficult labour, hypertension, haemorrhage |
| Risk factors of gestational diabetes | family history obesity previous GDM in pregnancy previous baby weight 4500gms maternal age over 25 years multiple pregnancy |
| CHO metabolism | glucagon needed to free glucose insulin actively transports free glucose across cell membranes into cells insufficient insulin - BGL increases - glycosuria fats oxidised for energy - ketones a by product |
| Insulin sensitivity | 0-20 weeks progesterone and oestrogen stimulate beta cells in pancreas to increase insulin production - insulin sensitivity increased glycogen synthesis and storage enhanced glucose use in peripheries - leads to lower BGL fat synthesis/storage increases reduced BGL and insulin needs |
| Insulin resistance | late 2nd and 3rd trimester - pregnancy hormones (prog, prolactin) antagonise the effectiveness of insulin glucose mobilised out of storage peripheral use of glucose reduced which facilitates availability of glucose for foetus increased BGL increased insulin needs |
| Gestational diabetes cycle | other hormones influence insulin pancreas- low/effective insulin blood stream-raised glucose level high glucose level affects embryo hormonal changes during pregnancy |
| pathophysiology | insulin secretion does not overcome insulin resistance gestational diabetes (type 3) aggravated pre-existing diabetes mellitis type 1 2) |
| Diagnosis | OGCT taken 26-28 weeks gestation non-fasting 50 gram glucose drink one hour venous blood is taken one hour blood glucose level of greater than 7.8mmol indicates need for an oral glucose tolerance test (OGTT) |
| OGTT | oral glucose tolerance test ensure normal diet 300 gm carb at least 3 days before test performed under 8 hr fasting obtain fasting venous blood sample 75 gram glucose drink given measure at 2 hours fasting glucose - less than 5.5mmol or glucose less than 7.8mmol 2 hrs after drink |
| Management | referral to high risk pregnancy and medical care home blood glucose monitoring education insulin treatment admission for further treatment if BGL over 11mmol or poor compliance with diet |
| Gestational diabetes follow up | all gestational diabetes women should have a glucose tolerance test at 6-8 weeks post partum education and advice given about risk of type 2 diabetes maintain healthy diet and exercise |
| Hypertension in pregnancy | arises in pregnancy at 20 weeks gestation pre-eclampsia classic triad of symptoms: HTN 140/90, proteinuria 300mg/24 hours, oedema rapid weight gain is supported |
| Pre-eclampsia diagnosis | PE is a multisystem disorder potentially affecting both mother and baby usually detected by measurement of an elevated bP |
| pathophysiology | Intense vasospasm - In pregnancies complication by PE - blood vessel constrict leading to vasospasm and reduction in blood flow causing maternal organ damage damage to endothelium of vessels release of inflammatory factors coagulation factors placental hypoxia |
| Clinical course of pre-eclampsia | eye- retinal haemorrhage, arteriolar spasm resp - pulmonary oedema, ARDS liver - hepatic rupture, haemorrhage CNS - seizures, CVA Pancreas - ischaemia kidneys - ARF Uteroplacental circulation - Abruption, fetal compromise |
| Management of mild pre-eclampsia | expectant management at home with visits in hospital bed rest with care of DVT careful checking of BP, urine protein and foetal activity monitoring of liver and renal function |
| Diagnostic criteria of severe pre-eclampsia | headaches, visual disturbances, pulmonary oedema, oliguria, elevated creatinine, proteinuria, systolic 160-180 diastolic 110 above |
| Management of severe pre-eclampsia | admit to high dependency, monitor closely prevent seizures lower BP to prevent cerebral haemorrhage assess for delivery, balance mother and baby conditions |
| Magnesium sulfate | preferred anticonvulsant slows neuromuscular activity and decreased CNS irritability no significant effects on BP 4-6gm load, followed by infusion of 1-3gms/hr levels monitored for toxicity |
| Antihypertensive medication | goal: diastolic 90/110mm/hg choice of agent - beta blockers, vasodilators oral alternatives (slower onset) - CCB, methydopa |
| Postpartum management | improvement rapid after birth risk of seizures greatest in first 24 hours mag sulfate continued for first 24 hours all monitored and continued for 24 hours watch for signs of fluid overload |
| Eclampsia | appearance of seizures in a woman with PE aetiology uncertain, cerebral oedema, ischaemia, possible causes BP often significantly elevated can occur berfore, during, after birth develops quickly: facial congestion frothing at mouth period of apnoea deepening loss of consciousness tonic phase of muscular rigidity usually lasts 60-70 secs women regains consciousness quickly |
| management of eclampsia | more than 50% occur out of hospital if seizure happens: call for help prevent injury/aspiratin give oxygen via hudson mask evaluate airway, pulse, BP, CPR secure IV access ASAP stable plan for birth may need ICU for monitoring respirations and CVS systems |
| Maternal physiology - cardiovascualr | reduction in blood volume by 30-50% before shock becomes evident HR normally higher BP lower to mask symptoms decreased vascular resistance - may not be clammy reduce ratio of RBC to plasma higher coagulability high clotting factors reflex vasoconstriction - reduced uteroplacental perfusion |
| Maternal physiology - gastrointestinal respiratory | gastro- reduced motility and emptying, higher risk of aspiration resp - high tidal volume, low PC02, high oxygen requirements, maternal/foetal hypoxia |
| Physiological changes of pregnancy that affect resuscitation/trauma | uterine blood flow determined by perfusion pressure with drop in maternal BP uterus receives 20-30% of CO Aortocaval compression causes 30% CO to be sequestered to lower body - 27% tilt during resuscitation haemorrhage of 1000-1500mls can occur before the woman shows signs of hypovolaemic shock increased oxygen consumption - maintain above 90% |
| Primary assessment maternal and foetal | maternal: stabilisation, life support, resuscitation, ABCs, oxygen, fluid support, initial physical examination, baseline maternal VS Foetal: fundal height (gestation), uterine activity (contractions), foetal HR, movement, assess for vaginal bleeding, ruptured membrans, US |
| Secondary assessments | x-rays, USS, lab investigations, CVP, urine output, complete physical examination |
| Definitive care | consider need for: emergency delivery ongoing fetal surveillance tocolytics antibiotic cover anti-d |
| Obstetric haemorrhage | can occur during: antenatal - miscarriage, placenta praevia, placental abruption intrapartum during birth - placental abruption or trauma to birth canal postpartum - post partum haemorrhage |
| Placenta Praevia | implantation of placenta inside the uterus near or over the opening of the cervix grade 1 - placenta mostly in upper segment of uterus but encroaching on lower segment grade 2 -reaches but doesnt cover the internal os grade 3 - covers internal os when its closed but not completely when its dilated grade 4 - placenta completely covers the internal os |
| Risk factors for placenta praevia | previous c-section previous instrumental birth older mother smoking multiple gestation |
| Placenta praevia | painless bleeding - 2/3 trimester or at term often following intercourse, may have preterm contractions on presentation: vital signs, FHS, determine gestation Lab, Gp and X match (have 2 units of whole blood in dept, coags) US to confirm placement management - no intercourse late pregnancy bleeding - assess for premature labour, corticosteriods, tocolysis |
| Placental abruption | premature seperation of placenta uterine wall -partial or complete, revealed, concealed, mixed foetal compromise, prematurity, restriction, stillbirth |
| Risk factors for abruption | HTN, smoking, substance use, trauma, MVA, over distension of uterus, chorioamnionitis |
| placental abruption | vaginal bleeding is usually associated with abdominal pain, uterine contractions, tenderness faint, collapse, signs of haemorrhagic shock * consider consealed abruption if abdominal or back pain is present |
| Management of abruption | depends on severity maternal resuscitation if needed monitor FHR, pain, contractions management of fluids, IVT 2 lines, oxyegn, USS |
| Postpartum haemorrhange | bleeding occurs following 2nd stage causes: poor uterine tone tissue present in uterus - membranes trauma from birth (cevix, vaginal tear) primary - within 24 hours of birth secondary - within 7-10 days postpartum |
| PPH risk factors | antepartum: pre-eclampsia, multiple gestation, previous PPH Intrapartum: lacerations of vaginal, cervical, perineal, assisted birth, forceps, vacuum |
| Post partum haemorrhage | up to 6% of vaginal births definition over 500mls blood loss 25% of maternal deaths causes: tone 70% tissue trauma thrombin |
| PPH - management | keep woman warm uterine mssage - encourage uterine contractions inspect lacerations and repair oxytocics -1st line - syntocinon - 2nd line - ergometrine - 3rd line - prostaglandin F2 alpha - intramyometrial surgical intervention - manual placenta, retain products, repair of trauma |
| Amniotic fluid embolism | occurs in 1 in 2 pregnancies maternal mortality 85% with ICU management 26.4% risk factors: multiparity abruption IUFD |
| AFE what and when | what: amniotic fluid force into the maternal circulation via uterine sinuses of the placental bed due to increased pressure When: close to term, during labour, immediately post partum |
| Clinical presentation of AFE | gradual or sudden chest pain, dyspnoea, resp distress, nausea and vomiting, seizures, blood stained sputum, anaphylactic reaction common, DIC, coma, death |
| AFE maternal assessment | initial event: oxygen 100% intubation ventilation PEEP to avoid alveolar collapse invasive haemodynaic monitoring central line two large bore IV - aggressive fluid replacement urine output monitored CXR and ECG |
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