Wednesday, October 9, 2013

Post Operative Care
pain management should be continuous from or to post-anesthetic unit to hospital ward and home 
pain service may assist with management of post operative inpatients.

Post-Operative nausea and Vomiting
more likely occur if young age female gender eye / middle ear / gynecological surgery, obese , history of post-anesthetic nausea / Vomiting.

Some anesthetic agents tend to cause more nausea post-operatively than other (e.g) opioids, nitrous oxide.

Hypertension and bradycardia must be ruled out. 

Pain/surgical manipulation also cause nausea.

Often treated with   dimenhydrinare (gravol.tm  ) metoclopramide (maxeran. tm) (not with bowel obstruction) prochlorperazine ( stematil ,tm) ondansetron (zofran.tm) granisetron.

post operative confusion and agitation .

ABCs first-confusion or agitation can be caused by airway obstruction, hypercapnea, hypoxemia.

Neurologic status (glassgow coma scale.pupils) residual paralysis from anesthetic.

Pain distended bowel /bladder.

Fear anxiety/separation from caregives/language barriers. 

Metabolic disturbance (hypoglycemia, hypercalcemia, hyponatremia-especially post TURP). 

Intracranial cause (stroke, raised intracranial pressure).

Drug effect (ketamine, anticholinergics).

Elderly patients are more susceptible to post-operative delirium. 

Sunday, October 6, 2013

Shoulder Dystocia

Definition

-Impaction of anterior shoulder of fetus against symphysis pubis after fetal head has been delivered
-Life threatening emergency

Etiology epidemiology

-Incidence 0.15-1.4% of deliveries
-Occurs when breadth of shoulder is greater than biparietal diameter of the head

Risk factor
-Maternal: obesity, Diabetes, multiparity
-Fetal: prolonged gestation, macrosomia

Labour :
-Prolong 2nd stage
-Prolonged deceleration phase (8-10 cm)
-Instrumental midpelvic delivery

Clinical feature
-“Turtle sign” (head delivered but retracts against inferior portion of pubic symphysis)

Complications:
Chest Compression by vagina or cord compression by pelvis can lead to hypoxia
Danger of brachial plexus injury (Erb palsy: C5-C7.klumpke;s palsy: C8-TI )
-90% resolve within 6 months
Fetal fracture (clavicle, humerus, cervical spine )
Maternal perineal injury, may result in PPH
Intrapartum fetal hypoxia of trauma

Treatment
Goal: to displace anterior shoulder from behind symphysis pubis; follow a stepwise approach of maneuvers until goal achieve (see box)

Other option when ALARMER fails :
-Cleidotomy (deliberate fracture of neonatal clavicle)
-Zavanelli maneuver: replacement of fetus into uterine cavity and emergent C/S
-Symphysiotomy
-Abdominal incision and shoulder disimpaction via hysterotomy - Subsequent vaginal delivery 

Prognosis
-90%of shoulder dystocias will resolve with McRobert’s maneuver and suprapubic pressure

-1%risk of long term disability for infant.