Ka boiphihlelo ba lilemo ho lihlahisoa tse tummeng tsa ho sebelisa mochini o tsebahalang oa batho , - ba ka fanang ka litšebeletso tse tummeng ka marang . batho rang, ka kopo hlakisa lits'ebeletso tse tummeng tsa anesseasia bakeng sa ts'ebeliso ea . Ntle le lenane la sehlahisoa ka tlase, u ka etsa lethathamo la hau le ikhethileng la litlolo tsa hau tse ikhethang tsa batho ho ea ka litlhoko tsa hau tse khethehileng.