Thursday, 10 October 2013

Thursday, 18 July 2013

Saturday, 29 June 2013

Eclampsia (CME MO)

       Pre eclampsia and severe pre eclampsia

  prepared by :Dr Nurul Naziha


                       

Update in obstetric and gynaecology in hospital segamat on june 2012

             
Update in obstetric and gynaecology in hospital segamat on june 2012

topic in this slide show are:

  • MDG 4&5
  • nausea and vomiting in pregnancy and hyperemesis gravidarum
  • miscarriage
  • ectopic pregnancy
  • molar pregnancy


  


Thursday, 20 June 2013

Multiple Pregnancy


MULTIPLE PREGNANCY


                 

CME by medical officers

Weekly CME for medical officers
Dates
Topics
Presenter
29/5/2013
Magpie trial
Dr Zharif
5/6/2013
Maternal collapse- a case study
Dr Molee
12/6/2013
Eclampsia- a case study
Dr Nurul
19/6/2013
Dr Hasniza
26/6/2013
Dr Azreen
3/7/2013
Dr Irene
10/7/2013
Dr Zharif
17/7/2013
Diabetes in Pregnancy
Dr Molee
24/7/2013
Dr Nurul
31/7/2013
DUBLIN
Dr Hasniza
14/8/2013
Oracle I and II
Dr Azreen
21/8/2013
Dr Irene
28/8/2013
Dr Zharif
4/9/20133
Dr Molee
11/9/2013
ASTEC
Dr Nurul
18/9/2013
Dr Hasniza
25/9/2013
Dr Azreen
2/10/2013
Dr Irene
9/10/2013
PORTEC
Dr Zharif
23/10/2013
Dr Molee
30/10/2013
Dr Nurul
6/11/2013
Dr Hasniza
13/11/2013
HERS STUDY
Dr Azreen
20/11/2013
Dr Irene
27/11/2013
Dr Zharif
4/12/2013
Dr Molee
11/12/2013
WHI
Dr Nurul
18/12/2013
Dr Hasniza


Saturday, 11 May 2013

Methyldopa

 

Manufacturer Pharmaniaga Manufacturing Berhad
Distributor Pharmaniaga Logistics
Contents Methyldopa
Indications Mild to moderate HTN.
Dosage Adult Initially 250 mg daily for 2 days. May increase by 250 mg at 2-day intervals. Max: 2 g/day. Childn Initially 10 mg/kg bd-tds. Max: 65 mg/kg/day.
Administration May be taken with or without food.
Contraindications Phaeochromocytoma, depression, active hepatitis, hepatic or renal insufficiency.
Special Precautions In halothane narcosis, risk of hepatotoxicity & intensity of narcosis may be enhanced.
Adverse Drug Reactions Sedation, headache, weakness, dizziness, parkinsonism, bradycardia, orthostatic hypotension, GI symptoms, hepatic impairment, impotence.
View ADR Monitoring Website
Drug Interactions Other antihypertensives, anaesth, lithium.
View more drug interactions with Pharmaniaga Methyldopa
Pregnancy Category (US FDA)






Category B: Either animal-reproduction studies have not demonstrated a foetal risk but there are no controlled studies in pregnant women or animal-reproduction studies have shown an adverse effect (other than a decrease in fertility) that was not confirmed in controlled studies in women in the 1st trimester (and there is no evidence of a risk in later trimesters).
MIMS Class Other Antihypertensives
ATC Classification C02AB01 - methyldopa (levorotatory) ; Belongs to the class of methyldopa, centrally-acting antiadrenergic agents. Used in the treatment of hypertension.
Poison Schedule B
Presentation/Packing
FormPhotoPacking/Price
Pharmaniaga Methyldopa film-coated tab 250 mgPharmaniaga Methyldopa film-coated tab 250 mg204.GIF
50 × 10's (RM180.00/box)

 

 

Pharmacokinetics and Metabolism

The maximum decrease in blood pressure occurs four to six hours after oral dosage. Once an effective dosage level is attained, a smooth blood pressure response occurs in most patients in 12 to 24 hours. After withdrawal, blood pressure usually returns to pretreatment levels within 24–48 hours.

Methyldopa is extensively metabolized. The known urinary metabolites are: α-Methyldopa mono-O-sulfate; 3-0-methyl-α-Methyldopa; 3,4-dihydroxyphenylacetone; α-Methyldopamine; 3-0-methyl-α-Methyldopamine and their conjugates.

Approximately 70 percent of the drug which is absorbed is excreted in the urine as Methyldopa and its mono-O-sulfate conjugate. The renal clearance is about 130 mL/min in normal subjects and is diminished in renal insufficiency. The plasma half-life of Methyldopa is 105 minutes. After oral doses, excretion is essentially complete in 36 hours.
Methyldopa crosses the placental barrier, appears in cord blood, and appears in breast milk.

Contraindications

Methyldopa is contraindicated in patients:
  • with active hepatic disease, such as acute hepatitis and active cirrhosis.
  • with liver disorders previously associated with Methyldopa therapy (see WARNINGS).
  • with hypersensitivity to any component of this product.
  • on therapy with monoamine oxidase (MAO) inhibitors.

Warnings

It is important to recognize that a positive Coombs test, hemolytic anemia, and liver disorders may occur with Methyldopa therapy.

With prolonged Methyldopa therapy, 10 to 20 percent of patients develop a positive direct Coombs test which usually occurs between 6 and 12 months of Methyldopa therapy.
Lowest incidence is at daily dosage of 1 g or less. This on rare occasions may be associated with hemolytic anemia, which could lead to potentially fatal complications.

If a positive Coombs test develops during Methyldopa therapy, the physician should determine whether hemolytic anemia exists and whether the positive Coombs test may be a problem.

Before treatment is started, it is desirable to do a blood count (hematocrit, hemoglobin, or red cell count) for a baseline or to establish whether there is anemia. Periodic blood counts should be done during therapy to detect hemolytic anemia. It may be useful to do a direct Coombs test before therapy and at 6 and 12 months after the start of therapy.
If Coombs-positive hemolytic anemia occurs, the cause may be Methyldopa and the drug should be discontinued. Usually the anemia remits promptly. If not, corticosteroids may be given and other causes of anemia should be considered.


Should the need for transfusion arise in a patient receiving Methyldopa, both a direct and an indirect Coombs test should be performed. In the absence of hemolytic anemia, usually only the direct Coombs test will be positive. A positive direct Coombs test alone will not interfere with typing or cross matching. If the indirect Coombs test is also positive, problems may arise in the major cross match and the assistance of a hematologist or transfusion expert will be needed.

Occasionally, fever has occurred within the first three weeks of Methyldopa therapy, associated in some cases with eosinophilia or abnormalities in one or more liver function tests, such as serum alkaline phosphatase, serum transaminases (SGOT, SGPT), bilirubin, and prothrombin time. Jaundice, with or without fever, may occur with onset usually within the first two to three months of therapy. In some patients the findings are consistent with those of cholestasis. In others the findings are consistent with hepatitis and hepatocellular injury.

Precautions

General

Methyldopa should be used with caution in patients with a history of previous liver disease or dysfunction (see WARNINGS).
Some patients taking Methyldopa experience clinical edema or weight gain which may be controlled by use of a diuretic. Methyldopa should not be continued if edema progresses or signs of heart failure appear.
Hypertension has recurred occasionally after dialysis in patients given Methyldopa because the drug is removed by this procedure.
Rarely, involuntary choreoathetotic movements have been observed during therapy with Methyldopa in patients with severe bilateral cerebrovascular disease. Should these movements occur, stop therapy.


REF:
http://www.drugs.com/pro/methyldopa.html
http://www.mims.com/MALAYSIA/drug/info/Pharmaniaga%20Methyldopa/#Content

Friday, 10 May 2013

Gestational Trophoblastic Disease




Gestational Trophoblastic Disease
Define: Abnormal pregnancy in which the developing fetus and placenta are replaced by proliferation of throphoblastic tissue.
¬  Spectrum of disease
a)      Benign  - Complete hydatidiform moles, partial mole
b)      Malignant – Invasive mole, Choriocarcinoma, placenta site trophoblastic tumor

Gestational trophoblastic Neoplasia
Define: any evidence of persistence of GTD with persistent elevation of beta human chorionic gonadotrophin

Differentiate
Complete Hydatidiform mole
Partial mole
46XX Homozygous (75-80%)
-duplication of a single sperm following
fertilisation of an ‘empty’ ovum
46XY Heterozygous (20-25%)
-dispermic fertilisation of an
‘empty’ ovum
69XXY triploid (from maternal & paternal)
- two sets of paternal haploid genes and
one set of maternal haploid genes
-following dispermic fertilisation of
an ovum
(10% are tetraploid or mosaic conception)
No embryonic or fetal tissue
embryonic or fetal tissue
Diffuse trophoblastic hyperplasia
Focal trophoblastic – variable changes
Generalized swelling of villous tissue
-all hydrophic
Focal swelling of villous tissue
-some hydrophic
May develop malingnant changes
Less likely to develop malignant changes

Symptoms and signs of molar pregnancy:
¬  classic features 
a)      irregular vaginal bleeding (Passing out “grape-like structure” )
b)      hyperemesis
c)      excessive uterine enlargement
d)      early failed pregnancy.
¬  Rarer presentations : hyperthyroidism, early onset pre-eclampsia or abdominal distension due to theca lutein cysts
¬  Very rarely: acute respiratory failure or neurological symptoms such as seizures (metastatic)

Diagnosis
¬  Ultrasound examination is helpful in making a pre-evacuation diagnosis.
¬  Definitive diagnosis is made by histological examination of the products of conception.

Investigation
¬  FBC, Coagulation profile
¬  Blood group cross match
¬   BhCG
In women with a complete mole, the quantitative serum beta-hCG level is higher than expected, often exceeding 100,000 IU/L. In case of a partial mole, the level of beta-hCG is often within the wide range associated with normal pregnancy and the symptoms are usually less pronounced. For these reasons the diagnosis of a partial mole is often missed clinically and made from subsequent histologic assessment of the abortive materia

¬  Ultrasound : ‘snow’storm’ appearance, no fetal parts seen, bilateral theca lutein cysts in POD
¬  Chest X-ray - exclude invasive mole in lung










Treatment
1.      Evacuation of molar pregnancy
a)      Complete molar pregnancies : Suction curettage.
b)      Partial molar pregnancies : Suction curettage  except when the size of the fetal parts deters the use of suction curettage, then medical evacuation can be used.
¬  Medical evacuation of complete molar pregnancies should be avoided because
-           the routine use of potent oxytocic agents lead to contraction of myometrium and potential to embolise and disseminate trophoblastic tissue through the venous system
-          Use of mifepristone and misoprostol increases the sensitivity of the uterus to prostaglandins

¬  Preparation of the cervix (to ripen it) immediately prior to evacuation is safe
-          Prolonged cervical preparation, particularly with prostaglandins, should be avoided  to reduce the risk of embolisation of trophoblastic cells.

2.      The use of oxytocic infusion prior to completion of the evacuation is not recommended.
¬  Excessive vaginal bleeding can be associated with molar pregnancy and a senior surgeon directly
supervising surgical evacuation is advised.
¬  If the woman had significant haemorrhage prior to evacuation, surgical evacuation should be expedited and the need for oxytocin infusion weighed up against the risk of tumour embolisation.

3.      Histologic assessment
¬  If obtained from the medical or surgical management of all failed pregnancies is recommended to exclude trophoblastic neoplasia.
¬  No need to routinely send products of conception for HPE after surgical termination of pregnancy, provided that fetal parts have been identified on prior ultrasound examination.

4.      A urinary pregnancy test should be performed 3 weeks after medical management of failed pregnancy if products of conception are not sent for histological examination.

5.      Anti-D prophylaxis is required following evacuation of a molar pregnancy (may delayed)
-          Required in partial mole
-          Not required in complete mole because of poor vascularisation of the chorionic villi and absence of the anti-D antigen
                                                                  
Women need investigated for GTN after non-molar pregnancy
¬  Any woman who develops persistent vaginal bleeding after a pregnancy event is at risk
¬  A urine pregnancy test should be performed in all cases of persistent or irregular vaginal bleeding after a pregnancy event.
¬  Symptoms from metastatic disease can occur very rarely.

Follow-up

The aims of follow-up are to confirm successful treatment and to identify women with persistent or malignant GTD who may require adjuvant chemotherapy or surgery at an early stage. Persistent vaginal bleeding and above all elevation of serum beta-hCG levels are the main indicators of residual disease.
The outcome of a partial hydatidiform mole after uterine evacuation is almost always benign. Persistent disease occurs in 1.2% to 4% of cases; metastasis occurs only in 0.1% of cases 
 In complete moles, these risks are approximately 5 times greater after treatment with uterine evacuation and 2-3 times greater after hysterectomy 
The risk of persistent or recurrent GTD is greatest in the first 12 months after evacuation, with most cases presenting within 6 months.
A variety of hCG criteria have been used to diagnose postmolar gestational trophoblastic disease. Recently, the International Federation of Gynecologists and Obstetricians (FIGO) standardized the following hCG criteria for the diagnosis of postmolar gestational trophoblastic disease
  • An hCG level plateau of four values ±10% recorded over a 3-week duration (days 1, 7, 14, and 21).
  • An hCG level increase of more than 10% of three values recorded over a 2-week duration (days 1, 7, and 14).
  • Persistence of detectable hCG for more than 6 months after molar evacuation.
Use of reliable hormonal contraception is recommended while hCG values are being monitored. Oral contraceptives do not increase the incidence of postmolar gestational trophoblastic disease or alter the pattern of regression of hCG values 
Frequent pelvic examinations are performed while hCG values are elevated to monitor the involution of pelvic structures and to aid in the early identification of vaginal metastases. Although pregnancies after molar evacuation usually are normal gestations, pregnancy obscures the value of monitoring hCG levels during this interval and may result in a delayed diagnosis of postmolar malignant gestational trophoblastic disease. A new intrauterine pregnancy should be ruled out on the basis of hCG levels and ultrasonography, especially when there has been a long delay in follow-up of serial hCG levels and noncompliance with contraception. After completion of documented remission for 6-12 months, women who desire pregnancy may discontinue contraception, and hCG monitoring may be discontinued. 
Patients with prior partial or complete moles have a 10-fold increased risk (1-2% incidence) of a second hydatidiform mole in a subsequent pregnancy. 
Therefore, all future pregnancies should be evaluated by early obstetric ultrasonography.

Chemotherapy

Complete molar pregnancy is well recognized to have the potential for local invasion and distant spread. After evacuation, local uterine invasion occurs in about 15% and metastases in 4%. Complete molar pregnancy is usually divided into low and high risk for persistence based on signs and symptoms of marked trophoblastic proliferation at the time of evacuation, i.e.: hCG >100,000 mIU/Ml; excessive uterine enlargement; theca-lutein ovarian cyst >6 cm in diameter; older maternal age; a previous molar pregnancy. The risk of postmolar GTD is significant less with partial molar pregnancy and is seen in approximately 1-6%

Prognosis



Table 1. Gestational Trophoblastic Neoplasia (GTN)a,b
FIGO Anatomical Staging 
Stage
I
Disease confined to the uterus.
II
GTN extends outside of the uterus, but is limited to the genital structures (adnexa, vagina, broad ligament).
III
GTN extends to the lungs, with or without known genital tract involvement.
IV
All other metastatic sites.
Modified WHO Prognostic Scoring System as Adapted by FIGOb
Scores
0
1
2
4
Age
<40
≥40
Antecedent pregnancy
mole
abortion
term
Interval months from index pregnancy
<4
4–6
7–12
>12
Pretreatment serum hCG (iu/1)
<103
103–104
104–105
>105
Largest tumor size (including uterus)
<3
3–4 cm
≥5 cm
Site of metastases
lung
spleen, kidney
gastrointestinal
liver, brain
Number of metastases
1–4
5–8
>8
Previous failed chemotherapy
single drug
≥2 drugs
  In this scoring system, women with a score of 7 or greater are considered at high risk.

Ref:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3279094/ 
http://www.cancer.gov/cancertopics/pdq/treatment/gestationaltrophoblastic/HealthProfessional/page3
  • May Allah Bless our job and our patients.
    -Amin-